KINDAI UNIVERSITY


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KUSUNOKI Masanobu

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FacultyDepartment of Human Factors Engineering and Environmental Design / Graduate School of Biology-Oriented Science and Technology
PositionProfessor
Degree
Commentator Guidehttps://www.kindai.ac.jp/meikan/568-kusunoki-masanobu.html
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Last Updated :2020/11/25

Education and Career

Education

  •  - 1991 , Meijo University, Faculty of Science and Technology

Academic & Professional Experience

  •   2011 ,  - 現在, Faculty of Biology-Oriented Science and Technology, Kindai University
  •   2005 ,  - 2011 , Kindai University
  •   2003 ,  - 2005 , Kindai University
  •   1996 ,  - 2003 , Yamagata University

Research Activities

Research Areas

  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Measurement engineering
  • Nanotechnology/Materials, Structural and functional materials
  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Electronic devices and equipment
  • Nanotechnology/Materials, Inorganic materials
  • Life sciences, Biomaterials
  • Life sciences, Biomedical engineering
  • Life sciences, Regenerative dentistry and dental engineering
  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Electric/electronic material engineering
  • Life sciences, Prosthodontics
  • Life sciences, Nutrition and health science
  • Life sciences, Biomaterials
  • Life sciences, Biomedical engineering
  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Measurement engineering
  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Electronic devices and equipment
  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Electric/electronic material engineering
  • Nanotechnology/Materials, Nano/micro-systems
  • Nanotechnology/Materials, Nanomaterials

Research Interests

  • Bio Device, Microwave, Electrinic Device, Superconductivity

Published Papers

  • Fabrication of C-plane Oriented Hydroxyapatite Film on Amorphous SiO2 Substrate, Yuki Okada, Yuka Watanabe, Takumi Sato, Masanobu Kusunoki, IEEJ Transactions on Electronics, Information and Systems, IEEJ Transactions on Electronics, Information and Systems, 139(11), 1260 - 1265, Nov. 2019 , Refereed
  • Development of Simple, Objective Chair-Standing Assessment of Physical Function in Older Individuals Using a Kinect™ Sensor, Nobuo Takeshima, T. Kohama, M. Kusunoki, E. Fujita, S. Okada, Y. Kato, K. Kofuku, M. M. Islam, W. F. Brechue, The Journal of Frailty & Aging, The Journal of Frailty & Aging, online, 1 - 6, Jun. 2019 , Refereed
  • Orientation control for a-axis or c-axis oriented crystal films of hydroxyapatite, and a possible growth mechanism derived from X-ray diffraction, Masanobu Kusunoki, Yasuhiro Sakoishi, Takayuki Makino, Tomoya Tsunemine, Naoki Fujita, Yuki Okada, Daisuke Okai, Hidetaka Togo, Takashi Hayami, Applied Surface Science, Applied Surface Science, 484, 433 - 440, 2019 , Refereed
  • Evaluating activities of daily living using an infrared depth sensor: KINECTTM., Kusunoki M, Kohama T, Yamada Y, Fujita E, Okada S, Maeda A, Takeshima N, Disability and rehabilitation. Assistive technology, Disability and rehabilitation. Assistive technology, 1 - 11, Mar. 2018 , Refereed
  • Evaluating activities of daily living using an infrared depth sensor: KINECT TM, KUSUNOKI Masanobu, DISABILITY AND REHABILITATION: ASSISTIVE TECHNOLOGY, DISABILITY AND REHABILITATION: ASSISTIVE TECHNOLOGY, Mar. 2018 , Refereed
  • Demonstration of extremely narrow and long nanowire composed of high temperature superconductor, KOTANI KATSUMI, MIYAKE TOMOKI, YAMASHITA TARO, MIKI SHIGEHITO, TERAI HIROTAKA, KUSUNOKI MASANOBU, Mem Fac Biol Oriented Sci Technol Kinki Univ, Mem Fac Biol Oriented Sci Technol Kinki Univ, (36), 1 - 7, Sep. 2015 , Refereed
  • Fabrication of a HA films using the Er:YAG laser, HONTSU SHIGEKI, KATO NOBUHIRO, YAMAMOTO EI, YOSHIKAWA KAZUSHI, HASHIMOTO YOSHIYA, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, バイオインテグレーション学会誌, バイオインテグレーション学会誌, 4(1), 65 - 69, Jul. 31 2014 , Refereed
  • Restoration of tooth enamel using a flexible hydroxyapatite sheet coated with tricalcium phosphate, Yamamoto, E, Kato, N, Isai, A, Nishikawa, H, Kusunoki, M, Yoshikawa, K, Hontsu, S, Bioceramics Development and Applications, Bioceramics Development and Applications, S1 - S006, Dec. 2013 , Refereed
  • Ultrathin amorphous calcium phosphate freestanding sheet for dentin tubule sealing, Kato, N, Yamamoto, E, Isai, A, Nishikawa, H, Kusunoki, M, Yoshikawa, K, Hontsu, S, Bioceramics Development and Applications, Bioceramics Development and Applications, S1 - S007, Dec. 2013 , Refereed
  • Preparation of fluoridated hydroxyapatite thin films by laser deposition technique and in vitro evaluation of its biocompatibility, 本津 茂樹, 西川 博昭, 楠 正暢, Journal of bio-integration, Journal of bio-integration, 3(1), 67 - 70, Sep. 30 2013 , Refereed
  • Measurement of Piezoelectric Properties of Pulsed Laser Deposited Hydroxyapatite Thin Films on Platinum or Titanium Substrate, T. Nishigaki, H. Nishikawa, M. Kusunoki, S. Hontsu, Bioceramics Development and Applications, Bioceramics Development and Applications, S1-008, May 2013 , Refereed
  • Preparation of Apatite Thin Films and Their Application to Biosensor, 本津 茂樹, 西川 博昭, 楠 正暢, Journal of the Society of Inorganic Materials, Japan : セッコウ・石灰・セメント・地球環境の科学, Journal of the Society of Inorganic Materials, Japan : セッコウ・石灰・セメント・地球環境の科学, 19(361), 504 - 510, Nov. 2012
  • バイオセラミックスの現状と新展開 アパタイト薄膜の形成とバイオセンサへの応用, HONTSU SHIGEKI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, J Soc Inorg Mater Jpn, J Soc Inorg Mater Jpn, 19(361), 504 - 510, Nov. 01 2012
  • Preparation of Apatite Thin Films and Their Application to Biosensor, HONTSU Shigeki, NISHIKAWA Hiroaki, KUSUNOKI Masanobu, Journal of the Society of Inorganic Materials, Japan : セッコウ・石灰・セメント・地球環境の科学, Journal of the Society of Inorganic Materials, Japan : セッコウ・石灰・セメント・地球環境の科学, 19(361), 504 - 510, Nov. 01 2012 , Refereed
  • Examination of enamel regeneration method using the hydroxyapatite/α-TCP composite sheet, Hontsu Shigeki, Yoshikawa Kazushi, Matsuda Taiyo, Kusunoki Masanobu, Maruyama Toshiro, Yamamoto Ei, Kato Nobuhiro, Nishikawa Hiroaki, Preprints of Annual Meeting of The Ceramic Society of Japan
    Preprints of Fall Meeting of The Ceramic Society of Japan, Preprints of Annual Meeting of The Ceramic Society of Japan
    Preprints of Fall Meeting of The Ceramic Society of Japan, 2012(0), 706 - 706, 2012 , Refereed
    Summary:We have succeeded to regenerate tooth enamel by using flexible hydroxyapatite (HAp) sheets. In this study, we tried enamel regeneration by composite sheet which deposited a α-TCP thin film on the HAp sheet. The HAp/α-TCP composite sheets are stick onto polished surface of extracted teeth with calcium phosphate solution. The time dependence of the composition at the interfaces between the composite sheet and the teeth surfaces was evaluated by an X-ray diffraction (XRD) method. After one day past, the XRD pattern completely matched with that of teeth enamel. Also, the adherence between composite sheet and teeth enamel was evaluated by tensile test.
  • アパタイト系材料の最新の話題―環境・電子応用から生体応用まで―レーザーアブレーション法によるアパタイト薄膜の形成とバイオセンサへの応用, HONTSU SHIGEKI, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, セラミックス, セラミックス, 46(9), 745 - 749, Sep. 01 2011 , Refereed
  • Biosensor Applications of Apatite Thin Films Prepared by Pulsed Laser Deposition, HONTSU Shigeki, KUSUNOKI Masanobu, NISHIKAWA Hiroaki, Ceramics Japan, Ceramics Japan, 46(9), 745 - 749, Sep. 01 2011 , Refereed
  • Dental application of flexible apatite sheet, 本津 茂樹, 楠 正暢, 西川 博昭, Function & materials, Function & materials, 31(5), 63 - 68, May 2011
  • フレキシブルアパタイトシートの歯科応用, HONTSU SHIGEKI, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, YOSHIKAWA KAZUSHI, 機能材料, 機能材料, 31(5), 63 - 68, Apr. 05 2011 , Refereed
  • Regeneration of enamel by a self-organization process of apatite sheet, Hontsu Shigeki, Yamamoto Kazuyo, Kato Nobuhiro, Yamamoto Ei, Maruyama Toshiro, Matsuda Taiyo, Nisikawa Hiroaki, Kusunoki Masanobu, Hayami Takashi, Yoshikawa Kazushi, Preprints of Annual Meeting of The Ceramic Society of Japan
    Preprints of Fall Meeting of The Ceramic Society of Japan, Preprints of Annual Meeting of The Ceramic Society of Japan
    Preprints of Fall Meeting of The Ceramic Society of Japan, 2011(0), 231 - 231, 2011 , Refereed
    Summary:We have attempted to regenerate tooth enamel artificially by using flexible hydroxyapatite (HAp) sheets. The sheets are affixed onto polished surface of extracted teeth with calcium phosphate solution. The time-dependent variation of the composition at the interfaces between the HAp sheets and the teeth surfaces was evaluated by an X-ray diffraction (XRD) method. After one week past, the XRD pattern completely matched with that of teeth enamel. The adherence between HAp sheet and teeth enamel was evaluated by tensile test using a stainless rod with a diameter of 3 mm glued onto the HAp sheet. The test validated that the adherence between HAp sheet and tooth enamel is much stronger than 3.4 MPa in affixing post-21 days.
  • Control of Ca/P ratio of hydroxyapatite thin film by pulsed laser deposition, H. Nishikawa, R. Yoshikawa, H. Nakajima, M. Kusunoki, T. Hayami, S. Hontsu, 24th European Conference on Biomaterials - Annual Conference of the European Society for Biomaterials, 24th European Conference on Biomaterials - Annual Conference of the European Society for Biomaterials, 2011 , Refereed
  • Scratch Test of Simulated Body Fluid-derived Hydroxyapatite Film on Biomedical Titanium Substrates, 速水尚, 西川博昭, 楠正暢, 松村和明, 本津茂樹, 大政光史, 澤井徹, The 3rd International Congress on Ceramics, Osaka, The 3rd International Congress on Ceramics, Osaka, Nov. 2010 , Refereed
    Summary:ハイドロキシアパタイトの接着強度に対する膜厚と化学組成の影響について,ナノスクラッチ試験を用いて検討した。パルスレーザー堆積法を用いて医療用チタンを化学量論的ハイドロキシアパタイトと擬似体液由来アパタイトで被覆し,基材密着性と剥離挙動をナノスクラッチテストによって詳細に観察した.
  • Characteristics of a humidity sensor using a Na-doped hydroxyapatite thin film, HONTSU SHIGEKI, NAKAMORI MASAYA, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, Mem Fac Biol Oriented Sci Technol Kinki Univ, Mem Fac Biol Oriented Sci Technol Kinki Univ, (26), 87 - 91, Sep. 30 2010 , Refereed
  • Micro-patterning technique for capillary blood vessels on Polytetrafluoroethylene substrate, KUSUNOKI MASANOBU, WADA TAKUTO, KANDA HIROTAKA, TOGO HIDETAKA, HAYAMI TAKASHI, HASHIMOTO YOSHIYA, NISHIKAWA HIROAKI, HONTSU SHIGEKI, Mem Fac Biol Oriented Sci Technol Kinki Univ, Mem Fac Biol Oriented Sci Technol Kinki Univ, (25), 1 - 5, Mar. 31 2010 , Refereed
  • Nerve cell patterning using polytetrafluoroethylene and poly-D-lysine, Masanobu Kusunoki, Yoshitaka Togo, Takuto Wada, Yoshiya Hashimoto, Yoshiya Hashimoto, Hiroaki Nishikawa, Shigeki Hontsu, IEEJ Transactions on Electronics, Information and Systems, IEEJ Transactions on Electronics, Information and Systems, 129(11), 2014 - 2018, Nov. 01 2009 , Refereed
    Summary:We developed a patterning technique for nerve cells that uses polytetrafluoroethylene (PTFE) and poly-D-lysine (PDL). The PDL layer on the PTFE substrate acted as a buffer for nerve cell adhesion, while Ar ion-irradiated areas on PTFE were used for separation of nerve cells. This structure was then used as a scaffold. A matrix circuit of nerve cells with dendrites or axons was subsequently observed on the scaffold after a week of cell culture. The Ar ion-irradiated area exhibited graphite or amorphous carbon, and PDL was detached from carbon grains by mechanical stress during cell culture. A possible explanation for the adhesion between PDL and PTFE is the van der Waals force. The stress between PDL/PTFE was reduced by the flexibility of PDL gel, which prevented separation of PDL from PTFE.
  • Imparting Biointegration to Porous-Surfaced Implant by Nanoscale Thickness Hydroxyapatite Deposition, HAYAMI Takashi, NISHIKAWA Hiroaki, HIGUCHI Yuichi, HASHIMOTO Noriya, KUSUNOKI Masanobu, HONTSU Shigeki, SHIBUE Tadashi, YAMAMOTO Masao, Journal of JSEM, Journal of JSEM, 8(2), 127 - 132, Jun. 25 2008
  • Imparting Biointegration to Porous-Surfaced Implant by Nanoscale Thickness Hydroxyapatite Deposition, HAYAMI Takashi, NISHIKAWA Hiroaki, HIGUCHI Yuichi, HASHIMOTO Noriya, KUSUNOKI Masanobu, HONTSU Shigeki, SHIBUE Tadashi, YAMAMOTO Masao, Proceedings of the Japan Society for Photoelasticity, Proceedings of the Japan Society for Photoelasticity, 8(2), 127 - 132, 2008
    Summary:The fixation between a beads-type porous-surfaced dental implant and a surrounding bone is dependent on 3-dimensional anchoring effect which new bones develop into a porous structure. The speed of a bone ingrowth into the porous structure and the good fixation to bone is strongly related to biocompatibility of the implant. To impart a functional fixation by biointegration to the implant, in this study, a pulsed laser deposition (PLD) technique was used to form 300 nm thick hydroxyapatite (HA) film even on the depths of the porous structure. Through X-ray diffraction (XRD) and energy dispersive X-ray spectrometry (EDX) analysis, it was found that HA was crystallized and was deposited on the depths of interconnecting pores of complicated shape. The implants were placed into posterior regions of completely edentulous mandible of a canine. The bone ingrowth condition was scanned by CT scanner. In three weeks after operation, the bone ingrowth speed in the HA-deposited implant was increased as compared with the non-HA-deposited one. In five weeks after operation, no particular differences on the bone ingrowth between the HA-deposited and non-HA-deposited implants were found. HA thin film deposition on a porous-suerfaced implant was effective in the improvement of functional bone fixation.
  • DEVELOPMENT OF MEASUREMENT SYSTEM FOR QUANTITIES OF MOVEMENT USING HYDRAULIC RESISTANCE EXERCISE MACHINE BASED CIRCUIT TRAINING, KUSUNOKI Masanobu, UEDA Ryouhei, NISHIKAWA Hiroaki, HONTSU Shigeki, LEE Sung chul, KOIZUMI Daisuke, NASU Eriko, TAKESHIMA Nobuo, Japanese journal of physiological anthropology, Japanese journal of physiological anthropology, 11(4), 191 - 196, Nov. 25 2007 , Refereed
  • Evaluation of biological moleculer adsorption on hydroxyapatite and amorphus Ca10(PO4)6(OH)2 thin films using QCM method, Haruka Imai, Masanobu Kusunoki, Yoshiya Hashimoto, Hiroaki Nishikawa, Shigeki Hontsu, IEEJ Transactions on Electronics, Information and Systems, IEEJ Transactions on Electronics, Information and Systems, 127(11), 4 - 1842, 2007 , Refereed
    Summary:Biological molecular adsorption on crystal hydroxyapatite (HAp) and amorphous Ca10(PO4)6(OH)2 was investigated using quartz crystal microbalance (QCM) method. The pulsed laser ablation (PLA) was applied to coat both kind films for QCM sensors. A crystal HAp sensor was prepared with thermal treatment during the fabrication process. An amorphous Ca10(PO4)6(OH)2 sensor was prepared without any thermal treatment. Not only crystal HAp but amorphous Ca10(PO4)6(OH)2 showed good adsorptive feature compared with conventional QCM on the market. The result showed that a low temperature deposition of HAp is adaptable to polymer-based materials for medical purposes.
  • Improvement of hydroxyapatite deposition on titanium dental implant using ArF laser ablation: effect on osteoblast biocompatibility in vitro, Y.Hashimoto, M.Kusunoki, R.Hatanaka, K.Hamano, H.Nishikawa, Y.Hosoi, S.Hontsu, M.Nakamura, Materials in Clinical Applications, Materials in Clinical Applications, 7, 287 - 294, Jun. 2006 , Refereed
  • Surface resistance of YBa2Cu3O7-delta thin films on MgO lattice-matched BaZrO3 buffer layers, M Mukaida, Y Yamazaki, Y Shingai, S Makino, M Kusunoki, A Saito, S Ohshima, SUPERCONDUCTOR SCIENCE & TECHNOLOGY, SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 17(3), 337 - 341, Mar. 2004 , Refereed
    Summary:The growth and characterization of a BaZrO3 buffer layer for controlling the in-plane orientation of YBa2Cu3O7-delta films grown on MgO substrates is described. BaZrO3 buffer layers and YBa2Cu3O7-delta films are grown by pulsed laser deposition. 45degrees grain boundaries typically exist in YBa2Cu3O7-delta films grown on MgO(001) substrates; these are fatal defects for microwave device applications and are eliminated using the BaZrO3 buffer layer. The preferred orientation and in-plane orientation with respect to the MgO substrates are estimated for MgO lattice-matched BaZrO3 buffer layers grown on MgO substrates. YBa2Cu3O7-delta films grown at an optimum growth temperature of 710 degreesC on BaZrO3 buffer layers on MgO(001) substrates show a lower surface resistance (R-s) than those on MgO(001) substrates without BaZrO3 buffer layers.
  • Improvement of Superconducting Filter Properties using Sapphire Rod Trimming, UCHIDA Takashi, SUTO Masaki, MIKAMI Hiroshi, TAKEDA Makoto, KUSUNOKI Masanobu, SAITO Atsushi, MUKAIDA Masashi, OHSHIMA Shigetoshi, Cryogenic engineering, Cryogenic engineering, 39(1), 18 - 24, Jan. 25 2004
  • Improvement of Superconducting Filter Properties using Sapphire Rod Trimming, UCHIDA Takashi, SUTO Masaki, MIKAMI Hiroshi, TAKEDA Makoto, KUSUNOKI Masanobu, SAITO Atsushi, MUKAIDA Masashi, OHSHIMA Shigetoshi, TEION KOGAKU, TEION KOGAKU, 39(1), 18 - 24, 2004
    Summary:This paper reports the results the application of sapphire rod trimming to improve HTS filter properties. First, we examined the optimum position of the sapphire rod above the hairpin filter to shift the resonance frequency. The resonance frequency could be changed about 20 MHz, a value which is sufficient for filter trimming. Next, we examined sapphire rod trimming for a 5-resonator hairpin filter. We found that sapphire rod trimming is a very useful technique for improving filter properties; for example, reducing the ripple and increasing the steepness of the filter properties. We also discuss improving sapphire rod trimming using an equivalent circuit model. The improvement and sapphire rod position could be explained by the equivalent circuit model.
  • Buffer layers for TFA-MOD YBa2Cu3O7? d films on MgO substrate, M. Mukaida, M.Miura, T.Araki, Masanobu Kusunoki, A.Saito, S. Ohshima, I. Hirabayashi, K.Tanabe, Institute of Physics Conference Series, Institute of Physics Conference Series, 12, 1514 - 1519, 2004 , Refereed
  • Surface Resistance Measurement of Superconducting Thin Film Using Probe-Coupling Type Microstrip Line Resonator, OKAI Daisuke, KUSUNOKI Masanobu, MUKAIDA Masashi, OHSHIMA Shigetoshi, The transactions of the Institute of Electronics, Information and Communication Engineers. C, The transactions of the Institute of Electronics, Information and Communication Engineers. C, 84(11), 1113 - 1121, Nov. 01 2001 , Refereed
    Summary:超伝導マイクロ波受動デバイスを設計するためには, 超伝導薄膜の表面抵抗を考慮する必要がある.このため, 超伝導薄膜の表面抵抗の高精度測定法の確立が望まれている.本論文では, 超伝導薄膜の表面抵抗の測定法としてプローブ結合型マイクロストリップ線路共振器法を提案する.共振器法では, 表面抵抗は共振器の無負荷Q, Quから計算される.したがって, マイクロストリップ線路共振器法により超伝導薄膜の表面抵抗を正確に求めるためには, 共振器のQuを高精度測定する技術の確立が重要となる.プローブ結合型マイクロストリップ線路共振器法により金属と超伝導薄膜から作製した共振器のQu測定を行い, プローブ結合型マイクロストリップ線路共振器法によるQu測定の測定精度と, 超伝導薄膜の表面抵抗測定の再現性について述べる.
  • Ln dependence in Ln2CuO4 buffer layers of c-axis in-plane aligned a-axis oriented YBa2Cu3O7-δ thin film growth, M. Mukaida, M. Kusunoki, S. Ohshima, Physica C: Superconductivity and its Applications, Physica C: Superconductivity and its Applications, 357-360(1), 1382 - 1385, Sep. 2001 , Refereed
    Summary:Lanthanide (Ln) atom in Ln2CuO4 buffer layer dependence of c-axis in-plane aligned a-axis oriented YBa2Cu3O7-δ (YBCO) thin film growth is discussed and preferred orientation growth model of a bc-plane matched growth model is proposed. The c-axis in-plane aligned a-axis oriented YBCO thin films are very attractive from both the researches on the origin of high Tc superconductors and microelectronics device applications. However the c-axis in-plane aligned a-axis oriented films are difficult to grow. We have been proposing Ln2CuO4 buffer layers for the c-axis in-plane aligned a-axis oriented YBCO thin film growth. We have examined various Ln atoms in Ln2CuO4 buffer layers for the growth of YBCO thin films by pulsed laser deposition. From a lattice matching point of view, a Tb2CuO4 buffer layer is the best one for the c-axis in-plane aligned a-axis oriented YBCO thin films. However the result shows that the Nd2CuO4 and Tb2CuO4 buffer layer causes YBCO thin films with c-axis oriented portion about 35% and 32%, by X-ray diffraction peaks, which is much larger than those on Gd2CuO4 buffer layers (7.4%). The most promising Ln atom in Ln2CuO4 buffer layers for the growth of the c-axis in-plane aligned a-axis oriented YBCO thin films so far is Gd2CuO4 buffer layers or Eu2CuO4 buffer layers. © 2001 Elsevier Science B.V. All rights reserved.
  • The effect of lattice matching between buffer layer and YBa2Cu3O7-delta thin film on in-plane alignment of C-axis oriented thin films, K Chiba, S Makino, M Mukaida, M Kusunoki, S Ohshima, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 11(1), 2734 - 2737, Mar. 2001 , Refereed
    Summary:The effect of lattice matching between YBa2Cu3O7-delta (YBCO) films and buffer layers as well as between buffer layers and MgO substrates have been discussed from viewpoints of crystalline, critical temperature and surface resistance of YBCO films. SrSnO3 (SSO) as well as BaSnO3 (BSO) were used as buffer materials. SSO has closer lattice constant to YBCO than BSO. YBCO films were grown on these materials at the optimal growth temperature by pulse laser deposition. The FWHM of phi -scan (102) plane of YBCO films on SSO buffer lavers was smaller than that of YBCO films on BSO buffer layers. However the values of FWHM of 005 rocking-curve of YBCO films on BSO buffer layer were smaller than that of YBCO films on SSO buffer layer. The difference of surface resistance between YBCO film on BSO buffer layer and YBCO film on SSO buffer layer was very small indicating superconducting properties are not mainly governed by lattice mismatch at this region. We obtained the same values for c-axis length and critical temperature in YBCO films on these materials.
  • Relationship between the surface resistance and crystal orientation of YBa2Cu3O7-delta thin film, S Ohshima, M Kusunoki, M Mukaida, T Suzuki, K Chiba, M Inadomaru, Y Takano, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 11(1), 3493 - 3496, Mar. 2001 , Refereed
    Summary:We have examined the relationship between in-plane orientation, grain size, fluctuation of grain axis and surface resistance of YBa2Cu3O7-delta (YBCO) films. The surface resistance of YBCO films with a mixture of (100) and (110) in-plane grains was larger than that of the films with perfect in-plane orientation. The behavior of surface resistance could be explained by the degree of grain boundaries of (100) and (110) in-plane orientation. The surface resistance of YBCO films was proportion to the fluctuation of grain axis. It was also proven that surface resistance of high-temperature superconductors is affected by the critical current.
  • Critical thickness of BaSnO3 buffer layer for YBa2Cu3O7-delta thin films on MgO substrates, K Chiba, S Makino, M Mukaida, M Kusunoki, S Ohshima, PHYSICA C, PHYSICA C, 349(1-2), 35 - 39, Jan. 2001 , Refereed
    Summary:The critical thickness of BaSnO3 (BSO) buffer layer for YBa2Cu3O7-delta (YBCO) thin films on MgO substrate is discussed from viewpoints of the in-plane orientation and critical temperature. Thin films are grown by changing the thickness of BSO buffer layers at optimal growth temperature of YBCO films by pulse laser deposition. We are able to control the in-plane orientation of YBCO films with the BSO buffer layers thicker than 2 nm. This result indicates that BSO buffer layers can control the in-plane orientation of YBCO with a thickness less than the other buffer materials reported so far. (C) 2001 Elsevier Science B.V. All rights reserved.
  • Elimination of α-axis growth in YBa2Cu3O7-8 films on CeO2-buffered Al2O3, Katherine D. Develos, Katherine D. Develos, Masashi Mukaida, Masanobu Kusunoki, Shigetoshi Ohshima, Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, 39, 1116 - 1120, Dec. 01 2000 , Refereed
    Summary:The elimination of α-axis orientation in YBa2Cu3O7-8 (YBCO) films grown on CeO2-buffered A12O3 for microwave devices was achieved through a two-step deposition process performed at different temperatures. The growth of α-axis-oriented YBCO film was considered to be due to the impediment of the adatom mobility by the surface roughness of the underlying buffer layer. For the initial layer, the deposition was carried out at a high temperature to increase surface mobility. Next, the deposition was performed at a lower temperature as necessary for optimum α-axis-oriented growth. By this method, only a α-axis-oriented film was obtained. The characteristic surface resistance Rs(T) values for this film were significantly lower than those with mixed c-and α-axis orientations. © 2000 Publication Board, Japanese Journal of Applied Physics.
  • High-temperature resistance of YBa2Cu3O7-delta films under various oxygen pressures, M Mukaida, S Oikawa, M Kusunoki, S Ohshima, SUPERCONDUCTOR SCIENCE & TECHNOLOGY, SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 13(9), L5 - L9, Sep. 2000 , Refereed
    Summary:The electrical resistance of a c-axis-oriented YBa2Cu3O7-delta film is measured at elevated temperatures, under various values of oxygen pressure. The resistance shows a monotonic increase with substrate temperature up to around 450 degrees C, indicating little oxygen out-diffusion. Above this temperature, the rapid increase of the electrical resistance shows out-diffusion of oxygen from the film. As the temperature is increased, an abrupt drop occurs above a certain temperature (T-m) where the resistance indicates its highest value. T-m has an oxygen pressure dependence, which is similar to the oxygen pressure dependence of the orthorhombic-to-tetragonal transition line in an oxygen pressure-inverse of temperature phase diagram of YBa2Cu3O7-delta. From the observation of surface morphologies, the T-m is thought to be a sort of melting temperature where a partial melting of the YBa2Cu3O7-delta film occurs.
  • Effects of cation mixing on the growth of a-axis oriented NdBa2Cu3O7-delta thin films, M Mukaida, J Sugimoto, S Sato, M Kusunoki, S Ohshima, ADVANCES IN SUPERCONDUCTIVITY XII, ADVANCES IN SUPERCONDUCTIVITY XII, 5, 957 - 959, 2000 , Refereed
    Summary:Effects of cation mixing on the growth of a-axis oriented NdBa2Cu3O7-delta films grown by ArF pulsed laser deposition on LaSrGaO4 (100) substrates with a buffer layer of Gd2CuO4 are investigated by x-ray diffractometry and cross-sectional transmission electron microscopy (TEM). Films are c-axis in-plane aligned a-axis oriented with a few amount of c-axis oriented portion. mixture of a- and c-axis oriented regions were observed in the NdBa2Cu3O7-delta films which are quite different from a-axis oriented YBa2Cu3O7-delta thin films. In the a-axis oriented YBa2Cu3O7-delta thin films, c-axis oriented portion was always observed in the vicinity of the interface between the substrates and the, films. These results indicate that a preferred orientation changing of YBa2Cu3O7-delta films from c-axis to a-axis on lattice mismatched substrates are not originated from mixing of cations of Y and Ba.
  • Effect of cavity's loss on the measurement accuracy of the surface resistance by microstripline resonator method, D Okai, M Kusunoki, M Mukaida, S Ohshima, ADVANCES IN SUPERCONDUCTIVITY XII, ADVANCES IN SUPERCONDUCTIVITY XII, 5, 1063 - 1065, 2000 , Refereed
    Summary:We have examined the effect of the loss in the cavity on the measurement accuracy of surface resistance (Rs) of a superconducting thin film using a microstripline resonator. The Rs of a YBCO thin film was measured as a parameter of the height of the cavity's ceiling. The investigation revealed that the loss in the ceiling affected the measurement accuracy of Rs for a comparatively lower ceiling height. However, when the ceiling's height was sufficiently high, the effect was negligible.
  • New measurement technique of the surface impedance of superconductors using the probe-coupling type microstripline resonator, Daisuke Okai, Masanobu Kusunoki, Masashi Mukaida, Shigetoshi Ohshima, Asia-Pacific Microwave Conference Proceedings, APMC, Asia-Pacific Microwave Conference Proceedings, APMC, 3, 880 - 883, Dec. 01 1999
    Summary:We have developed a probe-coupling type microstripline resonator method for accurate measurement of the surface impedance of superconductors. By this improved microstripline resonator method, the surface impedance can be measured without attaching any contacts to the film. This paper reports the accurate and reproducible measurement process of surface impedance using the probe-coupling type microstripline resonator. The surface impedance of a YBCO thin film was measured using this technique. The measured results revealed that this technique may be used for the accurate measurement of surface impedance.
  • In-plane orientation of C-axis oriented YBa2Cu3Ox films on MgO substrates, Masashi Mukaida, Yoshinobu Takano, Kazuaki Chiba, Masanobu Kusunoki, Shigetoshi Ohshima, Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, 38, 1945 - 1948, Dec. 01 1999 , Refereed
    Summary:The appearance of 45° grain boundaries in c-axis oriented YBa2Cu3Ox films grown by pulsed laser deposition on MgO (001) substrates is discussed. X-ray φ-scan (in-plane orientation) measurements have revealed that YBa2Cu3Ox films grown at around 700°C have two types of grains with [100]Mgo ∥ [100]YBCO and [110]MgO ∥ [100]YBCO in-plane epitaxial relationships. A plausible growth model is proposed from the viewpoints of lattice matching and ionic adhesive energy. The ratio of 0° and 45° grains is found to be a function of the substrate temperature. By decreasing the substrate temperature, we obtained c-axis oriented YBa2Cu3Ox thin films with only a [100]Mgo ∥ [100]YBCO in-plane epitaxial relation. We have eliminated the 45° grain boundaries which drastically increase the surface resistance of the YBa2Cu3Ox films for microwave applications. ©1999 Publication Board, Japanese Journal of Applied Physics.
  • Fabrication and microstructure of all in-plane aligned A-Axis oriented superconductor/insulator/superconductor junctions, Masashi Mukaida, Masanobu Kusunoki, Shigetoshi Ohshima, Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, 38, 1370 - 1374, Dec. 01 1999 , Refereed
    Summary:All in-plane aligned a-axis oriented YBa2Cu3Ox/Gd2CuO 4/YBa2Cu3Ox superconductor/insulator/superconductor (SIS) junction structures are fabricated by a pulsed laser deposition technique and their microstructures are characterized. An insulating barrier of Gd2CuO4 with an atomic graphoepitaxial relation is selected from a lattice-matching point of view for the b-and c-axes of YBa2Cu3Ox at a deposition temperature of the YBa2Cu3Ox films. Preferred orientations and in-plane alignments of electrodes of YBa2Cu3Ox films and barriers of Gd2CuO4 films are confirmed by X-ray diffraction spectroscopy and an X-ray φ-scan technique. X-ray diffraction measurements revealed that all the YBa2Cu3Ox/Gd2CuO 4/YBa2Cu3Ox films are a-axis oriented. The c-axes of the layers are also in-plane aligned. ©1999 Publication Board, Japanese Journal of Applied Physics.
  • A new epitaxial BaSnO3 buffer layer for YBa2Cu3O7-delta thin films on MgO substrates, M Mukaida, Y Takano, K Chiba, T Moriya, M Kusunoki, S Ohshima, SUPERCONDUCTOR SCIENCE & TECHNOLOGY, SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 12(11), 890 - 892, Nov. 1999 , Refereed
    Summary:45 degrees grain boundaries, which drastically increase surface resistance (R-S) in superconducting YBa2Cu3O7-delta films for microwave devices on MgO substrates, are eliminated using a new buffer layer of BaSnO3. BaSnO3 buffer layers and YBa2Cu3O7-delta films are grown by ArF pulsed laser deposition. Epitaxial relationships among BaSnO3, YBa2Cu3O7-delta and MgO are confirmed by x-ray phi-scanning. The Rs values of the YBa2Cu3O7-delta films are measured using a dielectric resonator with 22 GHz TE011 mode. The epitaxial YBa2Cu3O7-delta films grown on BaSnO3 buffered MgO substrates show lower R-S than YBa2Cu3O7-delta films directly grown on MgO substrates. The BaSnO3 buffer layer which enables YBa2Cu3O7-delta films to grow without 45 degrees grain boundaries at a optimum film growth condition is attractive for microwave applications.
  • The influence of in-plane 0-45 degrees grain boundary on microwave surface resistance of c-axis YBa2Cu3Oy films on MgO substrate, M Kusunoki, Y Takano, M Mukaida, S Ohshima, PHYSICA C, PHYSICA C, 321(1-2), 81 - 85, Aug. 1999 , Refereed
    Summary:The effect of in-plane 0-45 degrees grain boundaries on surface resistance (R-s) of c-axis YBa2Cu3Oy (YBCO) films on MgO substrates is discussed. Samples that have various densities of 45 degrees rotated grains were prepared using a self-template technique. The R-s values at 22 GHz were measured by the dielectric resonator method using a cryocooler. The R-s systematically changed corresponding to the amount of 0-45 degrees grain boundaries. Conspicuous feature of the films including 0-45 degrees grain boundaries is a large residual surface resistance. The R-s of almost perfectly in-plane aligned YBCO film scaled to 10 GHz were 0.12 m Omega at 20 K and 0.67 m Omega at 77 K on the assumption of tan delta = 0, respectively. (C) 1999 Elsevier Science B.V. All rights reserved.
  • In-plane orientation control of C-axis oriented YBa2Cu3O7-delta films on MgO substrates by BaSnO3 buffer layers, M Mukaida, Y Takano, K Chiba, T Moriya, M Kusunoki, S Ohshima, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 38(8B), L926 - L928, Aug. 1999 , Refereed
    Summary:A new BaSnO3 buffer layer is proposed for controlling the in-plane orientation of YBa2Cu3O7-delta films grown on MgO substrates. BaSnO3 buffer layers and YBa2Cu3O7-delta films are grown by pulsed laser deposition. 45 degrees grain boundaries in YBa2Cu3O7-delta films grown on MgO (001) substrates, which are fatal defects for microwave device applications, are eliminated using the BaSnO3 buffer layer. YBa2Cu3O7-delta films grown at an optimum growth temperature of 710 degrees C on BaSnO3 buffer layers on MgO (001) substrates show lower surface resistance (R-S) than those on MgO(001)substrates without BaSnO3 buffer layers.
  • Effect of deposition rate on the surface morphology of CeO2 films deposited by pulsed laser deposition, KD Develos, M Kusunoki, M Mukaida, S Ohshima, PHYSICA C, PHYSICA C, 320(1-2), 21 - 30, Jul. 1999 , Refereed
    Summary:We have investigated the effect of the deposition rate, as a direct function of the laser pulse repetition rate, on the surface morphology of CeO2 films deposited by the pulsed laser deposition (PLD) technique on r-cut Al2O3 (1 (1) over bar 02) substrates. The critical thickness is defined as the thickness before the onset of increased growth of large islands and abrupt increase in surface roughening. Two regimes of growth were found within the investigated range of deposition rate. It is found out that in the high deposition rate-regime (within 2-4 nm/min), the critical thickness is similar to 90 nm, but in the low deposition rate-regime (less than 1 nm/min), the critical thickness is shifted to similar to 40 nm. Films belonging to these two regimes of crystalline growth were found to have characteristically different formations and surface morphologies. As observed through atomic force microscopy (AFM), the surface morphology is composed of longitudinal islands forming a maze-like pattern in the high deposition rate-regime, while the characteristic morphology was composed of rounded islands in the low deposition rate-regime. Significant reduction in the areal density of large islands and characteristically smoother films was achieved using a low deposition rate. (C) 1999 Elsevier Science B.V. All rights reserved.
  • Examination on power handling capability of superconducting patch antenna, Katsufumi Ehata, Mohamrnad Idris All, Masanobu Kusunoki, Shigetoshi Ohshima, IEEE Transactions on Applied Superconductivity, IEEE Transactions on Applied Superconductivity, 9(2), 3081 - 3084, 1999 , Refereed
    Summary:Measured results of power handling capability characteristics of superconducting patch antenna and it's improvement are reported. A direct-fed patch antenna is fabricated by YBa2Cu3Oy, thin film with 50nm thickness. The gain of the antenna does not change with the applied power up to 26.3dBm at 12.3K, but drop of the gain is observed more than 26.5dBm. It is found by electromagnetic analysis that this gain drop occurs due to huge current concentration in the direct-fed patch. However, this current concentration can be reduced using the gap-coupled feed, and breakdown power is expected to be three times larger than that of direct feed. © 1999 IEEE.
  • New Measurement Technique of the Surface Resistance Rs using the Microstrip Resonator, D. Okai, T. Tomiyama, M. Kusunoki, M. Mukaida, S. Ohshima, Advances in Superconductivity, Advances in Superconductivity, 5, 1259 - 1262, 1999 , Refereed
  • Influence of the Microstructure of a CeO2 Buffer Layer on the Superconducting Properties of YBa2Cu3Oy on Al2O3, K. D. Develos, M. Kusunoki, S. Ohshima, Advances in Superconductivity, Advances in Superconductivity, 5, 1109 - 1112, 1999 , Refereed
  • Growth Manner of c-axis Oriented YBa2Cu3Oy Thin Films, M. Mukaida, M. Kusunoki, S. Ohshima, Advances in Superconductivity, Advances in Superconductivity, 5, 1019 - 1022, 1999 , Refereed
  • Elimination of 45 degree Grain Boundaries in LnBa2Cu30y Thin Films for Microwave Devices on MgO Substrates, M. Mukaida, Y. Takano, M. Kusunoki, S. Ohshima, Advances in Superconductivity, Advances in Superconductivity, 5, 1125 - 1128, 1999 , Refereed
  • Effect of Substrate Lattice Mismatch on the Crystallographic properties of YBa2Cu3Oy Thin Films for Microwave Devices, Y. Takano, M. Mukaida, M. Kusunoki, S. Ohshima, Advances in Superconductivity, Advances in Superconductivity, 5, 1129 - 1132, 1999 , Refereed
  • Design and Fabrication of Cross-coupled Microstrip Bandpath Filters, T. Tomiyama, M. Kusunoki, M. Mukaida, S. Ohshima, Advances in Superconductivity, Advances in Superconductivity, 5, 1255 - 1258, 1999 , Refereed
  • Desgin, Fabrication and Characterization of Patch Antenna Using Superconducting Thin Film, EHATA Katsufumi, KUSUNOKI Masanobu, OHSHIMA Shigetoshi, The transactions of the Institute of Electronics, Information and Communication Engineers, The transactions of the Institute of Electronics, Information and Communication Engineers, 12(12), 915 - 923, Dec. 25 1998 , Refereed
    Summary:超伝導体は通常の金属に比べて数けた小さい表面抵抗を有するため, 超電導体を用いた低損失な高周波デバイスの実現が期待されている.特に近年に見られる移動体通信の急速な普及と, 超伝導デバイスの冷却に用いる冷凍機の小型化技術の進歩に伴い, 超伝導体を用いた高周波デバイスの研究が盛んに行われている.本論文では, 酸化物超伝導薄膜を用いたパッチアンテナの設計・試作・評価について述べる.超伝導パッチアンテナは, 同じ形状の常伝動アンテナに比べて高い利得を有することが明らかとなり, 超伝導アンテナの高効率性を実証した.また, アンテナ特性の温度変化の原因についての考察や, 耐電力特性の測定結果とその向上策, 小型冷凍機を用いた超伝導アンテナの実用化についての検討などについて述べる.
  • Study on Optimum Configuration on Microstrip Bandpass Filters, T. Tomiyama, D. Okai, M. Kusunoki, S. Ohshima, Advances in Superconductivity, Advances in Superconductivity, 5, 1157 - 1160, 1998 , Refereed
  • Examination of the Microstripline Resonator for Measurement of the Magnetic Penetration Depth, D. Okai, T. Tachiki, Y. Shinkai, M. Kusunoki, S. Ohshima, Advances in Superconductivity, Advances in Superconductivity, 5, 1161 - 1164, 1998 , Refereed
  • Characterization of Superconducting Patch Antenna Fabricated by Both-Side Superconducting Thin Film, K. Ehata, M. Kusunoki, S. Ohshima, H. Kinder, Advances in Superconductivity, Advances in Superconductivity, 5, 1153 - 1156, 1998 , Refereed
  • New Vortex Flow Transistors Made of YBa2Cu3Oy Thin Films, Akira Fujimaki, Masanobu Kusunoki, Masaru Kito, Syuji Yoshida, Hiroya Andoh, Hisao Hayakawa, IEEE Transactions on Applied Superconductivity, IEEE Transactions on Applied Superconductivity, 7, 2399 - 2402, Dec. 01 1997 , Refereed
    Summary:We have investigated the performances of several types of vortex flow transistors including nanobridge vortex flow transistors (NBVFTs) based on a parallel array of nanobridges planar Josephson vortex flow transistors (planar JVFTs) based on a parallel array of grain boundary Josephson junctions and new JVFTs with a stacked structure (stacked JVFTs). Considering the integration and the reduction of the L/R time constant the areas of the transistors were restricted to less than 3 5 O-4m2. A NBVFT showed a flux-to-voltage transfer function of 2.6mV/Q which was one order of magnitude larger than that of the other transistors. In contrast the NBVFTs showed a very small current gain due to a large kinetic inductance of a nanobridge while the NBVFT had the smallest area among the three. A planar JVFT with asymmetric geometry was easy to fabricate and showed a current gain of 2.2 at 4.2K. However the planar JVFT requires a large area leading to a long response time other than the internal delay time. A stacked JVFT also showed a current gain of 2.5 at 4.2K. A layered structure yielded a strong coupling between the body of the JVFT and the control line. Due to this strong coupling the response time of the stacked JVFT was considerably improved compared to that of the p lanar JVFT. © 1997 IEEE.
  • Preparation of YBa2Cu3Oy thin films using induction-coil-coupled sputtering, M Kusunoki, A Osuka, K Ehata, S Ohshima, H Masumoto, T Hirai, JOURNAL OF THE JAPAN INSTITUTE OF METALS, JOURNAL OF THE JAPAN INSTITUTE OF METALS, 61(9), 951 - 955, Sep. 1997
    Summary:YBa2Cu3Oy (YBCO) superconducting thin films were deposited on MgO single crystals by induction-coil-coupled sputtering. The effects of the induction coil on the qualities of YBCO thin films are examined. Uniformity of film thicknesses below +/-5% was obtained over an area of 40 mm diameter using a 50 mm diameter target by the condition of the substrate-target distance of 90 mm. Even in the area of 60 mm diameter which was wider than that of the target, the uniformity of thickness within +/-17% was obtained. In order to clarify the effects of the induction-coil, we studied the dependence of the critical temperature (T-c) and the full width at half maximum (FWHM) of the films on the applying power of coil. T-c and FWHM showed optimum Values at the applying coil power of 70W. It is confirmed from these results that the induction-coil operated effectively to fabricate high quality films. The epitaxial relations of YBCO films on MgO single crystal substrates were examined by X-ray pole figure measurements. Basically film of YBCO was aligned with the c-axis perpendicular to the substrate surface. The film deposited at the coil power of 70W exhibited well single-oriented grains with the a- or b-axis parallel to the a-axis of MgO. However, films deposited at the applying coil power of 0W contained grains with two different orientations which were rotated by 45 degrees. Scanning electron microscopy (SEM) of the film surface showed the films to consist of a smooth background surface and a distribution of particles. Energy dispersive X-ray analysis (EDAX) measurements showed that the Ba concentration was larger than that of exact stoichiometric composition. Auger electron spectroscopy (AES) revealed that the elements contained in the particles were richer in Ba than in the smooth background surface. The BaCuO2 particles seemed to precipitate on the surface of the film.
  • Preparation of YBa2Cu3Oy thin films using induction-coil-coupled sputtering, M Kusunoki, A Osuka, K Ehata, S Ohshima, H Masumoto, T Hirai, JOURNAL OF THE JAPAN INSTITUTE OF METALS, JOURNAL OF THE JAPAN INSTITUTE OF METALS, 61(9), 951 - 955, Sep. 1997 , Refereed
    Summary:YBa2Cu3Oy (YBCO) superconducting thin films were deposited on MgO single crystals by induction-coil-coupled sputtering. The effects of the induction coil on the qualities of YBCO thin films are examined. Uniformity of film thicknesses below +/-5% was obtained over an area of 40 mm diameter using a 50 mm diameter target by the condition of the substrate-target distance of 90 mm. Even in the area of 60 mm diameter which was wider than that of the target, the uniformity of thickness within +/-17% was obtained. In order to clarify the effects of the induction-coil, we studied the dependence of the critical temperature (T-c) and the full width at half maximum (FWHM) of the films on the applying power of coil. T-c and FWHM showed optimum Values at the applying coil power of 70W. It is confirmed from these results that the induction-coil operated effectively to fabricate high quality films. The epitaxial relations of YBCO films on MgO single crystal substrates were examined by X-ray pole figure measurements. Basically film of YBCO was aligned with the c-axis perpendicular to the substrate surface. The film deposited at the coil power of 70W exhibited well single-oriented grains with the a- or b-axis parallel to the a-axis of MgO. However, films deposited at the applying coil power of 0W contained grains with two different orientations which were rotated by 45 degrees. Scanning electron microscopy (SEM) of the film surface showed the films to consist of a smooth background surface and a distribution of particles. Energy dispersive X-ray analysis (EDAX) measurements showed that the Ba concentration was larger than that of exact stoichiometric composition. Auger electron spectroscopy (AES) revealed that the elements contained in the particles were richer in Ba than in the smooth background surface. The BaCuO2 particles seemed to precipitate on the surface of the film.
  • Preparation of YBa2Cu3Oy thin films using induction-coil-coupled sputtering, Masanobu Kusunoki, Akira Osuka, Katsufumi Ehata, Sigetoshi Ohshima, Hirosi Masumoto, Toshio Hirai, Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, 61(9), 951 - 955, 1997
    Summary:YBa2Cu3Oy (YBCO) superconducting thin films were deposited on MgO single crystals by induction-coil-coupled sputtering. The effects of the induction coil on the qualities of YBCO thin films are examined. Uniformity of film thicknesses below ±5% was obtained over an area of 40 mm diameter using a 50 mm diameter target by the condition of the substrate-target distance of 90 mm. Even in the area of 60 mm diameter which was wider than that of the target, the uniformity of thickness within ±17% was obtained. In order to clarify the effects of the induction-coil, we studied the dependence of the critical temperature (Tc) and the full width at half maximum (FWHM) of the films on the applying power of coil. Tc and FWHM showed optimum values at the applying coil power of 70W. It is confirmed from these results that the induction-coil operated effectively to fabricate high quality films. The epitaxial relations of YBCO films on MgO single crystal substrates were examined by X-ray pole figure measurements. Basically film of YBCO was aligned with the c-axis perpendicular to the substrate surface. The film deposited at the coil power of 70W exhibited well single-oriented grains with the a- or b-axis parallel to the a-axis of MgO. However, films deposited at the applying coil power of 0W contained grains with two different orientations which were rotated by 45°. Scanning electron microscopy (SEM) of the film surface showed the films to consist of a smooth background surface and a distribution of particles. Energy dispersive X-ray analysis (EDAX) measurements showed that the Ba concentration was larger than that of exact stoichiometric composition. Auger electron spectroscopy (AES) revealed that the elements contained in the particles were richer in Ba than in the smooth background surface. The BaCuO2 particles seemed to precipitate on the surface of the film.
  • Design and Fabrication of Metal and Superconducting Meander-Line Antennas, T. Ogasawara, K. Ehata, M. Kusunoki, S. Ohshima, Advances in Superconductivity, Advances in Superconductivity, 5, 1269 - 1272, 1997 , Refereed
  • Design and Characterization of Superconducting Patch Antenna, K. Ehata, Takashi Ogasawara, M. Kusunoki, S. Ohshima, Advances in Superconductivity, Advances in Superconductivity, 5, 1273 - 1276, 1997 , Refereed
  • Vortex flow transistors based on YBa2Cu3O7-5 films, Akira Fujimaki, Masanobu Kusunoki, Masaru Kito, Syuji Yoshida, Hiroya Andoh, Hisao Hayakawa, IEICE Transactions on Electronics, IEICE Transactions on Electronics, E79-C, 1247 - 1252, Dec. 01 1996 , Refereed
    Summary:We have studied the performances of several types of vortex flow transistors including prototype flux flow transistors (FFTs), nanobridge vortex flow transistors (NBVFTs) based on a parallel array of nanobridges, planar Josephson vortex flow transistors (planar JVFTs) based on a parallel array of grain boundary Josephson junctions, and JVFTs with a stacked structure (stacked JVFTs). The NBVFTs had considerably higher magnetic field sensitivity and shorter response time than the FFTs. A flux-to-voltage transfer function dV/dG> of 2.6 m V/(Z>0 and a modulation depth of 0.5mV were obtained for the NBVFT composed of 2 nanobridges, while the current gain was small. The temperature dependence of the device parameters (the dynamic resistance and the inductance) suggests that the surface barrier to the Abrikosov vortex entry into the nanobridge strongly contributes to the relatively large dV/dQ values. The response time of the nanobridge is estimated to be 5 ps. On the other hand, the JVFTs showed large current gains because of the small kinetic inductance of the Josephson junction. The planar JVFT composed of 3 Josephson junctions with an asymmetrical geometry showed a current gain of 2.2 at 4.2 K. Also, the stacked JVFT showed the current gain of 2.0, while the maximum value of dV/dd> was 210/iV/OV The mutual inductance between the control line and the superconducting loop within the transistor was enhanced in the stacked JVFT. This enhancement may yield a short response time compared to that of the planar JVFT. When we apply these vortex flow transistors, we should take account of the properties peculiar to each transistor.
  • Vortex flow Transistors with nano-structures, A. Fujimaki, M. Kusunoki, M. Kito, S. Yoshida, H. Andoh, H. Hayakawa, Advances in Superconductivity, Advances in Superconductivity, 5, 1193 - 1198, 1996 , Refereed
  • Fabrication of c-plane-oriented hydroxyapatite film on amorphous SiO2 substrate, Yuki Okada, YukaWatanabe, Takumi Sato, Masanobu Kusunoki, Electronics and Communications in Japan, Electronics and Communications in Japan, 103(1), 26 - 31, Mar. 2020 , Refereed
  • Pulsed laser deposition of pure fluoroapatite film without OH groups, Naoki Fujita, Takayuki Makino, Yasuhiro Sakoishi, Katsuya Asano, Masanobu Kusunoki, CRYSTAL RESEARCH AND TECHNOLOGY, CRYSTAL RESEARCH AND TECHNOLOGY, 51(3), 215 - 219, Mar. 2016 , Refereed
    Summary:The relation between O-2 pressure and composition in the pulsed-laser deposition of fluoroapatite was investigated using both on-axis and off-axis methods to determine the optimal conditions for obtaining a pure fluoroapatite film without OH groups. Through this, it was found that an O-2 pressure of 10 Pa, combined with an off-axis method, results in P/Ca and F/Ca values (0.6 and 0.2, respectively) that match closely with a stoichiometric composition of Ca-10(PO4)(6)F-2. Fourier transform infrared spectroscopy analysis confirmed that this optimized film was almost pure fluoroapatite, with no evidence of any OH groups originating from hydroxyapatite. X-ray diffraction also revealed that this fluoroapatite film crystallizes with a c-axis orientation perpendicular to its surface.
  • A novel membrane-type apatite scaffold engineered by pulsed laser ablation, Yoshiya Hashimoto, Hiroaki Nishikawa, Masanobu Kusunoki, PeiQi Li, Shigeki Hontsu, DENTAL MATERIALS JOURNAL, DENTAL MATERIALS JOURNAL, 34(3), 345 - 350, Jun. 2015 , Refereed
    Summary:Cell sheet technology is a scaffold-free method for tissue reconstruction. A sheet-shaped scaffold would be suitable for the regeneration of periodontal membrane. We designed a stem cell sheet combining human mesenchymal stromal cells (hMSCs) and a 10-mu m thick biological apatite (BAp) membrane fabricated with an ArF pulsed laser ablation for periodontal regeneration. X-ray diffraction showed that crystalline hydroxyapatite (HAp) was present in BAp and HAp membranes after post-annealing. Energy dispersive analysis of the BAp membrane revealed peaks of Na and Mg in addition to Ca and P. Approximately 3x10(4) hMSCs were cultured on BAp and HAP membranes for 7 and 14 days. From in vitro assays, hMSCs grew faster and had higher osteoblast differentiation when cultured on the BAp membrane than did the cell culture on the HAp membrane. Stem cell sheets combined with a BAp membrane may have potential applications in guided bone regeneration and osteoconductive scaffolds.
  • Evaluation of dentin tubule sealing rate improved by attaching ultrathin amorphous calcium phosphate sheet, Nobuhiro Kato, Arata Isai, Ei Yamamoto, Hiroaki Nishikawa, Masanobu Kusunoki, Kazushi Yoshikawa, Kenzo Yasuo, Kazuyo Yamamoto, Shigeki Hontsu, Key Engineering Materials, Key Engineering Materials, 631, 258 - 261, 2015 , Refereed
    Summary:Dentin hypersensitivity is induced by mechanical stimuli or heat stimuli applied via dentin tubules exposed by lost of dental enamel or gingival recession. Common treatments for dentin hypersensitivity are resin coating or laser irradiation. However, these treatments have some problems such as poor biocompatibility or insufficient durability. We have been developing a treatment that creates artificial tooth enamel by attaching flexible ultrathin calcium phosphate sheet having a crystal structure similar to that of tooth enamel to seal the dentin tubules. In this study, the quantitative evaluation of dentin tubule sealing rate improved by attaching ultrathin amorphous calcium phosphate (ACP) sheet on human dentin is presented. The obtained sealing-rate by APC sheet application was 70.9 ±4.8%.
  • Preparation of [100] oriented SrTiO3 thin films on flexible polymer sheets, Hiroaki Nishikawa, Yusuke Morita, Masanobu Kusunoki, Shigeki Hontsu, Hidekazu Tanaka, Tamio Endo, JAPANESE JOURNAL OF APPLIED PHYSICS, JAPANESE JOURNAL OF APPLIED PHYSICS, 53(5), May 2014 , Refereed
    Summary:In this study, we prepared a uniaxially oriented oxide on a flexible polymer substrate. We first grew [100] oriented SrTiO3 (STO) on a MgO(100) substrate. After bonding the STO film to a poly(ethylene naphthalete) (PEN) sheet with a photoresist, we etched the MgO substrate with a phosphoric acid solution to transfer the oxide film to the PEN sheet. The thin (300nm) STO films did not crack after release, even after bending the sheet around a rod with a 1cm radius, while the thicker (800 nm) films did. Ultimately, this process could be adapted to prepare a flexible epitaxial oxide. (C) 2014 The Japan Society of Applied Physics
  • Preparation of [100] oriented SrTiO3 thin films on flexible polymer sheets, Hiroaki Nishikawa, Yusuke Morita, Masanobu Kusunoki, Shigeki Hontsu, Hidekazu Tanaka, Tamio Endo, JAPANESE JOURNAL OF APPLIED PHYSICS, JAPANESE JOURNAL OF APPLIED PHYSICS, 53(5), 05FB06.1-05FB06.4, May 2014 , Refereed
    Summary:In this study, we prepared a uniaxially oriented oxide on a flexible polymer substrate. We first grew [100] oriented SrTiO3 (STO) on a MgO(100) substrate. After bonding the STO film to a poly(ethylene naphthalete) (PEN) sheet with a photoresist, we etched the MgO substrate with a phosphoric acid solution to transfer the oxide film to the PEN sheet. The thin (300nm) STO films did not crack after release, even after bending the sheet around a rod with a 1cm radius, while the thicker (800 nm) films did. Ultimately, this process could be adapted to prepare a flexible epitaxial oxide. (C) 2014 The Japan Society of Applied Physics
  • In vitro response and adhesive strength of titanium and hydroxyapatite bilayer-films on polyetheretherketone substrate, Takashi Hayami, Masanobu Kusunoki, BIOMMEDD V, BIOMMEDD V, 583, 51 - 55, 2014 , Refereed
    Summary:In order to impart both osseointegration and osteoconduction characteristics onto extruded pure polyetheretherketone (PEEK) for use as an artificial bone material, the surface of the PEEK was sputter-coated with a thin bilayer-film consisting of a commercially pure titanium (Ti) layer with a thickness of 90 nm and a hydroxyapatite layer with a thickness of 200 nm derived from simulated body fluid (SBF-HA). A specimen of PEEK coated only with Ti was used in peeling tests to determine the adhesive strength of the interface between the two materials, which was found to be 2.55 +/- 0.45 MPa. Tensile tests were also carried out, and it was found that no exfoliation of the Ti film occurred until an ultimate strain of 129% was reached. In a cell culture test using mouse osteoblast on the bilayer-coated PEEK, cell proliferation following 168 h of culturing was 1.3 times higher on the SBF-HA than on synthetic hydroxyapatite, and 2.4 times higher than that on the Ti-coated PEEK. In addition, the proliferation on the Ti-coated PEEK was 2.1 times higher than that on uncoated PEEK.
  • Control of Crystallinity of Hydroxyapatite Sheet, M. Kusunoki, T. Matsuda, N. Fujita, Y. Sakoishi, R. Iguchi, S. Hontsu, H. Nishikawa, T. Hayami, BIOMMEDD V, BIOMMEDD V, 583, 47 - 50, 2014 , Refereed
    Summary:A technique to control the crystallinity of hydroxyapatite (HA) was investigated for applications such as dentistry, regenerative medicine, cell culture scaffolding, and bio-sensors. An amorphous HA film was first produced by pulsed laser deposition. After deposition, it was separated from a substrate as a free-standing sheet. Annealing was then performed to control the crystallinity of the sheet. It was found that conventional annealing in an electric oven was not suitable for HA sheets, because it led to curling and cracking. Since such problems were assumed to be caused by thermal stress, annealing was next carried out with the HA sheet enclosed in HA powder in the center of a metal capsule. This method allowed annealing to be successfully carried out without causing any curling or cracking. Uniform pieces with dimensions of 10 mm x 10 mm cut from a large HA sheet were annealed at temperatures of 200 to 800 degrees C and then examined using X-ray diffraction. It was found that the intensity of the diffraction peaks associated with crystalline HA changed with annealing temperature, and that the strongest peaks were observed for the sample annealed at 500 degrees C. These results indicate that the crystallinity of the HA sheet can be controlled using the proposed method.
  • C-Axis-Oriented Hydroxyapatite Film Grown Using ZnO Buffer Layer, Yasuhiro Sakoishi, Ryo Iguchi, Hiroaki Nishikawa, Shigeki Hontsu, Takashi Hayami, Masanobu Kusunoki, APPLIED PHYSICS EXPRESS, APPLIED PHYSICS EXPRESS, 6(11), 115501.1-115501.3, Nov. 2013 , Refereed
    Summary:A method of fabricating c-axis-oriented hydroxyapatite film on a quartz crystal microbalance (QCM) sensor was investigated. ZnO was used as a template to obtain a hexagonal hydroxyapatite crystal of uniaxial orientation. The ZnO was grown as a c-axis film on a Au/quartz with the surface structure of a QCM sensor. Under optimized conditions, hydroxyapatite was deposited by pulsed laser deposition. X-ray diffraction showed the hydroxyapatite film to be oriented along the c-axis. Because Au and ZnO are applied to many devices, the anisotropic properties of hydroxyapatite may be incorporated into these devices as well as QCM sensors. (C) 2013 The Japan Society of Applied Physics
  • Adhesive Strength between Flexible Hydroxyapatite Sheet and Tooth Enamel, E. Yamamoto, N. Kato, H. Nishikawa, M. Kusunoki, T. Hayami, K. Yoshikawa, S. Hontsu, BIOCERAMICS 24, BIOCERAMICS 24, 529-530, 522 - +, 2013 , Refereed
    Summary:Tooth enamel cannot be reconstructed once it is destroyed immoderately. Hydroxyapatite (HAp) thin sheet can potentially be used for a novel dental biomaterial to repair the enamel. Using a pulsed laser deposition (PLD) method, we have successfully created a flexible HAp sheet of less than a few micrometers in thickness. Due to its flexibility, the HAp sheet is tightly adhered on curved surfaces at the target site. In the present study, we newly developed double-layered sheets composed of HAp film coated with tricalcium phosphate (TCP) thin layer. The HAp/TCP sheet was adhered to the extracted human teeth using a calcium phosphate solution for 3 days. The adhesive strength between the HAp/TCP sheet and tooth enamel was evaluated by quasi-static tensile tests. Moreover, the interface structure between them was observed by a scanning electron microscopy. As a result of the mechanical evaluation, the adhesive strength was greater than approximately 2.5 MPa. The electron microscopic observation revealed that the sheet was partially fused with the enamel. These findings suggest the possibility that enamel defects are repaired using the HAp/TCP sheet for a short duration.
  • Fabrication of Hydroxyl Apatite Coating Titanium Web Scaffold Using Pulsed Laser Deposition Method, Shigeki Hontsu, Yoshiya Hashimoto, Yoshihiro Yoshikawa, Masanobu Kusunoki, Hiroaki Nishikawa, Akihiro Ametani, JOURNAL OF HARD TISSUE BIOLOGY, JOURNAL OF HARD TISSUE BIOLOGY, 21(2), 181 - 187, Apr. 2012 , Refereed
    Summary:To develop an improved surface conformation of titanium web (TW) scaffold, we examined the in vitro and in vivo biocompatibility of a thin hydroxyapatite (HA) deposited by pulsed laser ablation. Thin HA film was deposited on titanium discs using an pulsed laser operating at a repletion rate of 10 Hz and annealed by heating at 380 degrees C for 1 h. The presence of HA not only along the surface but also in the TW inner region was confirmed by the elementary mapping of calcium, phosphorous, and titanium. X-ray diffraction pattern showed that crystalline HA was present in the HA coating. Microscopic images after actin staining with rhodamine phalloidin revealed that the spread of clonal stromal cells was markedly greater on HA coating than on untreated TW. When infused with clonal stromal cells, the HA-coated TW could indeed generate bone formation in the backs of nude mice. However, the appearance of new bone was not enhanced by the HA coating, likely because air in the porous scaffold during cell loading reduces the cell-scaffold contact. Mild vacuum loading techniques might enable differences of osteo-differentiation between HA-coated TW and non-coated TW to emerge.
  • Fabrication of very thin high-temperature-superconducting films required for high-sensitivity optics/superconductivity converters, Daisuke Ito, Katsumi Kotani, Tomoki Miyake, Hiroaki Nishikawa, Shigeki Hontsu, Masanobu Kusunoki, IEEJ Transactions on Electronics, Information and Systems, IEEJ Transactions on Electronics, Information and Systems, 132(11), 1722 - 1726, 2012 , Refereed
    Summary:We studied a method to obtain superconductivity even in very thin films of YBa2Cu3Oy (YBCO). These thinner YBCO films will be able to be applied to optics/superconductivity (opt/super) converters with high optical sensitivity. Opt/super converters composed of YBCO nano-bridges or nano-wires require a low critical current that is determined by the film thickness. According to X-ray diffraction, critical temperature (Tc) and residual resistivity ratio for the substrates of MgO (100), SrTiO 3 (100) and NdGaO3 (110), superconducting features are influenced by the lattice mismatching layer in YBCO closing to a hetero-epitaxy interface between YBCO and single crystal substrate. YBCO films with different thicknesses varying from 80 to 10 nm were prepared on SrTiO3, using a suitable temperature. The values of Tc slightly decreased when reducing YBCO thickness from 80 to 20 nm, and then declined sharply at less than 20 nm. It is considered that a layer in the beginning of deposition less than 20 nm causes stress in the crystal lattice. The Tc of 20 nm YBCO film on SrTiO3 was 80.8 K. It can work above liquid N2 temperature. © 2012 The Institute of Electrical Engineers of Japan.
  • Fabrication of hydroxyl apatite coating titanium web scaffold using pulsed laser deposition method, Shigeki Hontsu, Yoshiya Hashimoto Dr., Yoshihiro Yoshikawa, Masanobu Kusunoki, Hiroaki Nishikawa, Akihiro Ametani, Journal of Hard Tissue Biology, Journal of Hard Tissue Biology, 21(2), 181 - 188, 2012 , Refereed
    Summary:To develop an improved surface conformation of titanium web (TW) scaffold, we examined the in vitro and in vivo biocompatibility of a thin hydroxyapatite (HA) deposited by pulsed laser ablation. Thin HA film was deposited on titanium discs using an pulsed laser operating at a repletion rate of 10 Hz and annealed by heating at 380°C for 1 h. The presence of HA not only along the surface but also in the TW inner region was confirmed by the elementary mapping of calcium, phosphorous, and titanium. X-ray diffraction pattern showed that crystalline HA was present in the HA coating. Microscopic images after actin staining with rhodamine phalloidin revealed that the spread of clonal stromal cells was markedly greater on HA coating than on untreated TW. When infused with clonal stromal cells, the HA-coated TW could indeed generate bone formation in the backs of nude mice. However, the appearance of new bone was not enhanced by the HA coating, likely because air in the porous scaffold during cell loading reduces the cell-scaffold contact. Mild vacuum loading techniques might enable differences of osteo-differentiation between HA-coated TW and non-coated TW to emerge. © 2012 The Hard Tissue Biology Network Association Printed in Japan, All rights reserved.
  • Regeneration of tooth enamel by flexible hydroxyapatite sheet, S. Hontsu, N. Kato, E. Yamamoto, H. Nishikawa, M. Kusunoki, T. Hayami, K. Yoshikawa, Key Engineering Materials, Key Engineering Materials, 493-494, 615 - 619, 2012 , Refereed
    Summary:Before a tooth erupts, the ameloblasts are lost, which means that the tooth enamel does not regenerate itself after tooth eruption. In the present study, we attempt to regenerate the tooth enamel artificially using a flexible hydroxyapatite (HAp) sheet. First, a HAp film was deposited on a soluble substrate by pulsed laser deposition (PLD) using an ArF excimer laser. Next, the HAp film was collected as a freestanding sheet by dissolving the substrate using a solvent. The HAp sheet was adhered to the extracted human teeth using a calcium phosphate solution. The variation of the crystal structure of the HAp sheet with time was investigated by X-ray diffraction analysis. Furthermore, the variation in the mechanical characteristics with time between the HAp sheet and dental enamel were evaluated using tensile and scratch tests. The results suggest that the HAp sheet became fused to the tooth enamel within approximately one week. © (2012) Trans Tech Publications.
  • Osteoconduction of a stoichiometric and bovine hydroxyapatite bilayer-coated implant, Takashi Hayami, Shigeki Hontsu, Yuichi Higuchi, Hiroaki Nishikawa, Masanobu Kusunoki, CLINICAL ORAL IMPLANTS RESEARCH, CLINICAL ORAL IMPLANTS RESEARCH, 22(7), 774 - 776, Jul. 2011 , Refereed
    Summary:Objective: To impart rapid and durable osteoconductivity to implants, a commercial titanium screw implant was coated with stoichiometric hydroxyapatite (HA; 50 nm thick), and then with bovine hydroxyapatite (B-HA; 300 nm thick) using the pulsed laser deposition technique. As control specimens, a commercial implant coated with HA (20 mu m thick) using the flame spraying method (sprayed implant) and a simple titanium implant (basic implant) was used. Methods: The osteoconductivities of these three types of implant, after implantation for 4-24 weeks, were histologically evaluated. Results: Peeling of HA from the sprayed implant was observed by scanning electron microscopic observation. In the fourth postoperative week, the bilayered implant was already closely adhered to bone. On the other hand, the basic implant was surrounded by a gap containing connective tissue. With the sprayed implant, the bone adhered to the thick HA coating. Conclusion: The bilayer deposition technique supplies quick and long-term fixation of implants to bone, because the B-HA film dissolves to aid osteoconduction right immediately after implantation and the HA thin film maintains osteoconduction without dissolution. Neither of the thin-film fractures easily compared with thick coatings.
  • EFFECTS OF HYDRAULIC-RESISTANCE EXERCISE ON STRENGTH AND POWER IN UNTRAINED HEALTHY OLDER ADULTS, SungChul Lee, Mohammod M. Islam, Michael E. Rogers, Masanobu Kusunoki, Akiyoshi Okada, Nobuo Takeshima, JOURNAL OF STRENGTH AND CONDITIONING RESEARCH, JOURNAL OF STRENGTH AND CONDITIONING RESEARCH, 25(4), 1089 - 1097, Apr. 2011 , Refereed
    Summary:Lee, S, Islam, MM, Rogers, ME, Kusunoki, M, Okada, A, and Takeshima, N. Effects of hydraulic-resistance exercise on strength and power in untrained healthy older adults. J Strength Cond Res 25(4): 1089-1097, 2011-The purpose of this study was to determine the efficacy of hydraulic-resistance exercise (HDRE) in improving strength and power in healthy older adults. Thirty-nine older adults (68.6 +/- 4.9 years; 15 men, 24 women) were divided into a training group or control group (CON). Hydraulic-resistance exercise consisted of a 12-week supervised program, 50 min.d(-1), 3 d.wk(-1). Hydraulic-resistance exercise was used for 10 exercises: Chest press and pull, shoulder press and pull, low back flexion and extension squat, leg adduction/abduction, leg press, and elbow extension/flexion. The number of the sets and the hydraulic-resistance dial setting (D) were gradually increased in 3 stages during the 12-week program. Strength, rating of perceived exertion, and relative intensity during exercise increased significantly from stage to stage whereas repetition velocity decreased. Total work was higher in the second stage compared with the first but lower in the final stage because of reduced repetitions. Peak torque at D2 and D11 increased (p < 0.05) for knee extension (58 and 9%) and flexion (94 and 21%), chest press (35 and 12%) and pull (29 and 14%), shoulder press (14 and 18%) and pull (75 and 18%), and low back flexion (59 and 46%) and extension (84 and 34%). Peak power at D2 and D11 also increased (p, 0.05) for knee extension (140 and 26%) and flexion (96 and 36%), chest press (54 and 28%) and pull (62 and 23%), shoulder press (55 and 31%) and pull (159 and 30%), and low back flexion (177 and 127%) and extension (104 and 66%). There were no significant changes in the CON. Hydraulic-resistance exercise elicits significant improvements in strength and power in older adults. Therefore, HDRE is an effective form of resistance training that provides benefits using low and moderate intensity of training for older adults.
  • Nanocapsules incorporating IgG Fc-binding domain derived from Staphylococcus aureus protein A for displaying IgGs on immunosensor chips, Masumi Iijima, Hiroyasu Kadoya, Satoko Hatahira, Shingo Hiramatsu, Giman Jung, Aaron Martin, John Quinn, Joohee Jung, Seong-Yun Jeong, Eun Kyung Choi, Takeshi Arakawa, Fumiyo Hinako, Masanobu Kusunoki, Nobuo Yoshimoto, Tomoaki Niimi, Katsuyuki Tanizawa, Shun'ichi Kuroda, BIOMATERIALS, BIOMATERIALS, 32(6), 1455 - 1464, Feb. 2011 , Refereed
    Summary:To enhance the sensitivities and antigen-binding capacities of immunosensors, oriented immobilization of antibodies on the surface of the sensor chip is critical, but to date, this has not been adequately achieved. We describe a way of adsorbing immunoglobulin (Ig) proteins onto 32-nm bio-nanocapsules (BNCs) through IgG Fc-binding domains derived from Staphylococcus aureus protein A (ZZ-BNC). This arrangement permits similar to 60 molecules of mouse total IgG bind to ZZ-BNC and all the IgG Fv regions to be displayed outwardly for the effective binding of antigens. ZZ-BNCs adsorbed onto the gold surface of the sensor chip of the quartz crystal microbalance (QCM) could markedly enhance the sensitivity and antigen-binding capacity of the chip. On the sensor chip of surface plasmon resonance (SPR), antibodies on the ZZ-BNCs showed higher affinities to each antigen than those on protein A. The BNC-coated sensor chip is very stable, and should prove useful for various immunosensor applications due to oriented immobilization of antibodies. (C) 2010 Elsevier Ltd. All rights reserved.
  • Restoration and Conservation of Dental Enamel using a Flexible Apatite Sheet, S. Hontsu, K. Yoshikawa, N. Kato, Y. Kawakami, T. Hayami, H. Nishikawa, M. Kusunoki, K. Yamamoto, JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY, JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY, 47(1), 11 - 13, 2011 , Refereed
    Summary:A freestanding hydroxyapatite (HAp) sheet of 5 similar to 10 mu m thickness was successfully prepared by a novel method. After depositing the thin HAp film on a soluble substrate by pulsed laser deposition (PLD) technique, the HAp film was collected as a freestanding sheet by dissolving the substrate using a solvent. Thereafter, HAp sheets were directly attached to enamel and dentin surfaces of extracted human teeth. Artificial saliva was sprayed every third day, and the course was observed for 90 days. Observation of the enamel-HAp and dentin-HAp interface by scanning electron microscopy revealed that the HAp sheet had stuck to the enamel and dentin surface.
  • Fabrication of a Large Hydroxyapatite Sheet, Masanobu Kusunoki, Yoshiaki Kawakami, Taiyo Matsuda, Hiroaki Nishikawa, Takashi Hayami, Shigeki Hontsu, APPLIED PHYSICS EXPRESS, APPLIED PHYSICS EXPRESS, 3(10), 107003.1-107003.3, 2010 , Refereed
    Summary:A large hydroxyapatite (HA) sheet of 50 mm diameter was constructed using a new fabrication process. The HA sheet was prepared by pulsed laser deposition (PLD) and then separated from the substrate. An intermediate layer of spin-coated photoresist between the PLD film and the substrate was dissolved in acetone to enable the separation. Sufficient crystallinity was obtained after postannealing. The area of the HA sheet prepared by the proposed process was approximately 20 times larger than that of the HA sheet prepared by the previous process. The proposed process can also be used for larger sheets. The HA sheet has promise in medical and dental applications. (C) 2010 The Japan Society of Applied Physics
  • Efficacy of an Accelerometer-Guided Physical Activity Intervention in Community-Dwelling Older Women, Daisuke Koizumi, Nicole L. Rogers, Michael E. Rogers, Mohammod M. Islam, Masanobu Kusunoki, Nobuo Takeshima, JOURNAL OF PHYSICAL ACTIVITY & HEALTH, JOURNAL OF PHYSICAL ACTIVITY & HEALTH, 6(4), 467 - 474, Jul. 2009 , Refereed
    Summary:Background: Although many Japanese older adults spend more than an hour each day walking for exercise, the intensity is often lower than the minimum level associated with various health benefits. The purpose of this study was to evaluate the efficacy of a lifestyle physical activity intervention on improving quantity and quality of daily physical activity (DPA) as well as cardiorespiratory endurance in community-dwelling older women. Methods: 68 women (60-78 yr of age) were randomly assigned to either a lifestyle physical activity intervention group (LIFE) or control group. During the 12-wk intervention, feedback based on accelerometer DPA data (number of daily steps (STEPS) and time spent performing daily moderate intensity physical activity (MPA) was provided to each participant in LIFE every two weeks. Cardiorespiratory endurance was evaluated using the 12-Minute Walk Test (12-MW). Results: Following the 12-wk intervention, significant group interactions were observed for STEPS, MPA, and cardiorespiratory endurance. LIFE increased STEPS by 16%, MPA by 53%, and the distance walked during the 12-MW by 10%. Conclusions: Promotion of DPA using accelerometers can significantly improve quantity and quality of daily physical activity as well as cardiorespiratory endurance in older women.
  • Efficacy of an accelerometer-guided physical activity intervention in community-dwelling older women, Daisuke Koizumi, Nicole L. Rogers, Michael E. Rogers, Mohammod M. Islam, Masanobu Kusunoki, Nobuo Takeshima, Journal of Physical Activity and Health, Journal of Physical Activity and Health, 6(4), 467 - 474, 2009
    Summary:Although many Japanese older adults spend more than an hour each day walking for exercise, the intensity is often lower than the minimum level associated with various health benefits. The purpose of this study was to evaluate the efficacy of a lifestyle physical activity intervention on improving quantity and quality of daily physical activity (DPA) as well as cardiorespiratory endurance in community-dwelling older women. Methods: 68 women (60-78 yr of age) were randomly assigned to either a lifestyle physical activity intervention group (LIFE) or control group. During the 12-wk intervention, feedback based on accelerometer DPA data (number of daily steps (STEPS) and time spent performing daily moderate intensity physical activity (MPA) was provided to each participant in LIFE every two weeks. Cardiorespiratory endurance was evaluated using the 12-Minute Walk Test (12- MW). Results: Following the 12-wk intervention, significant group interactions were observed for STEPS, MPA, and cardiorespira- tory endurance. LIFE increased STEPS by 16%, MPA by 53%, and the distance walked during the 12-MW by 10%. Conclusions: Promotion of DPA using accelerometers can significantly improve quantity and quality of daily physical activity as well as cardiorespiratory endurance in older women. © 2009 Human Kinetics, Inc.
  • Preparation of freestanding hydroxyapatite membranes with excellent biocompatibility and flexibility, Hiroaki Nishikawa, Ryota Hatanaka, Masanobu Kusunoki, Takashi Hayami, Shigeki Hontsu, APPLIED PHYSICS EXPRESS, APPLIED PHYSICS EXPRESS, 1(8), 088001.1-088001.3 - 0880013, Aug. 2008 , Refereed
    Summary:Hydroxyapatite (HAp) is one of the most widely used materials for tissue culture scaffolding in regenerative medicine. To apply HAp as a suitable material for tissue culture scaffolding, we have developed freestanding HAp membranes that can be directly transplanted "as is" into a diseased site after tissue culturing. These freestanding HAp membranes are highly biocompatible, provide early cell proliferation and differentiation, and their flexibility allows some degree of configuration to the target site. This tissue culture scaffold is ideal from the standpoint of harvesting tissue and directly transplanting it to the diseased site. (C) 2008 The Japan Society of Applied Physics.
  • Muscle Strength And Power Differences In Healthy Versus Frail Older Adults, Sung Chul Lee, Masanobu Kusunoki, Motoo Watanabe, Tomomi Yamada, Nobuo Takeshima, Michael E. Rogers, MEDICINE AND SCIENCE IN SPORTS AND EXERCISE, MEDICINE AND SCIENCE IN SPORTS AND EXERCISE, 40(5), S370 - S370, May 2008 , Refereed
  • Cytocompatibility of calcium phosphate coatings deposited by an ArF pulsed laser, Y. Hashimoto, M. Kawashima, R. Hatanaka, M. Kusunoki, H. Nishikawa, S. Hontsu, M. Nakamura, JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE, JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE, 19(1), 327 - 333, Jan. 2008 , Refereed
    Summary:In the current studies, we deposited ultra-thin hydroxyapatite films on a pure titanium substrate by pulsed laser deposition, and we examined the effects of these surfaces on rat bone marrow (RBM) cells. This method allowed deposition of 500-, 2,000-, and 5,000-angstrom-thick hydroxyapatite films. X-ray diffraction showed that the amorphous films recrystallized to a hydroxyapatite crystal structure after annealing. The proliferation of RBM cells was unaffected by the hydroxyapatite films, but osteocalsin and alkaline phosphatase mRNA and protein levels were elevated in cells grown on 2,000- and 5,000-angstrom-thick films. These results indicate that ultra-thin hydroxyapatite films generated by pulsed laser deposition are better at promoting osteogenesis than pure titanium surfaces.
  • Cytocompatibility of calcium phosphate coatings deposited by an ArF pulsed laser, Y. Hashimoto, M. Kawashima, R. Hatanaka, M. Kusunoki, H. Nishikawa, S. Hontsu, M. Nakamura, JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE, JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE, 18(7), 1457 - 1464, Jul. 2007 , Refereed
    Summary:In the current studies, we deposited ultra-thin hydroxyapatite films on a pure titanium substrate by pulsed laser deposition, and we examined the effects of these surfaces on rat bone marrow (RBM) cells. This method allowed deposition of 500-, 2000-, and 5000-angstrom-thick hydroxyapatite films. X-ray diffraction showed that the amorphous films recrystallized to a hydroxyapatite crystal structure after annealing. The proliferation of RBM cells was unaffected by the hydroxyapatite films, but osteocalsin and alkaline phosphatase mRNA and protein levels were elevated in cells grown on 2000- and 5000-angstrom-thick films. These results indicate that ultra-thin hydroxyapatite films generated by pulsed laser deposition are better at promoting osteogenesis than pure titanium surfaces.
  • Imparting cell adhesion to poly(vinyl alcohol) hydrogel by coating with hydroxyapatite thin film, Takashi Hayami, Kazuaki Matsumura, Masanobu Kusunoki, Hiroaki Nishikawa, Shigeki Hontsu, MATERIALS LETTERS, MATERIALS LETTERS, 61(13), 2667 - 2670, May 2007 , Refereed
    Summary:To impart good cell adhesion to poly(vinyl alcohol) hydrogel (PVA-H) as an artificial articular cartilage, hydroxyapatite thin film 300 nm thick was deposited by a pulsed laser deposition technique on PVA-H, which has virtually no cell adhesion. A cell culture method was used to study the effect of hydroxyapatite deposition on PVA-H upon cell adhesion among mouse fibroblasts. The cell adhesion of water content 33% PVA-H coated with the amorphous hydroxyapatite film showed a maximum as high as that of commonly used tissue culture dishes. This technique was also effective for improving cell adhesion, even on a higher water content (53%) PVA-H. This is a novel technique to improve the biocompatibility and attachment of PVA-H and with the underlying bone and natural cartilage. (C) 2006 Elsevier B.V. All rights reserved.
  • Imparting cell adhesion to poly(vinyl alcohol) hydrogel by coating with hydroxyapatite thin film, Takashi Hayami, Kazuaki Matsumura, Masanobu Kusunoki, Hiroaki Nishikawa, Shigeki Hontsu, MATERIALS LETTERS, MATERIALS LETTERS, 61(13), 2667 - 2670, May 2007 , Refereed
    Summary:To impart good cell adhesion to poly(vinyl alcohol) hydrogel (PVA-H) as an artificial articular cartilage, hydroxyapatite thin film 300 nm thick was deposited by a pulsed laser deposition technique on PVA-H, which has virtually no cell adhesion. A cell culture method was used to study the effect of hydroxyapatite deposition on PVA-H upon cell adhesion among mouse fibroblasts. The cell adhesion of water content 33% PVA-H coated with the amorphous hydroxyapatite film showed a maximum as high as that of commonly used tissue culture dishes. This technique was also effective for improving cell adhesion, even on a higher water content (53%) PVA-H. This is a novel technique to improve the biocompatibility and attachment of PVA-H and with the underlying bone and natural cartilage. (C) 2006 Elsevier B.V. All rights reserved.
  • Evaluation of biological moleculer adsorption on hydroxyapatite and amorphus Ca10(PO4)6(OH)2 thin films using QCM method, Haruka Imai, Masanobu Kusunoki, Yoshiya Hashimoto, Hiroaki Nishikawa, Shigeki Hontsu, IEEJ Transactions on Electronics, Information and Systems, IEEJ Transactions on Electronics, Information and Systems, 127(11), 4 - 1842, 2007 , Refereed
    Summary:Biological molecular adsorption on crystal hydroxyapatite (HAp) and amorphous Ca10(PO4)6(OH)2 was investigated using quartz crystal microbalance (QCM) method. The pulsed laser ablation (PLA) was applied to coat both kind films for QCM sensors. A crystal HAp sensor was prepared with thermal treatment during the fabrication process. An amorphous Ca10(PO4)6(OH)2 sensor was prepared without any thermal treatment. Not only crystal HAp but amorphous Ca10(PO4)6(OH)2 showed good adsorptive feature compared with conventional QCM on the market. The result showed that a low temperature deposition of HAp is adaptable to polymer-based materials for medical purposes.
  • Reliability of Hydraulic Resistance Exercise Testing in Older Adults with and without Health Conditions, Sung Chul Lee, Hiroshi Takeda, Mohammod M. Islam, Ryouhei Ueda, Ryouhei Ueda, Daisuke Koizumi, Eriko Nasu, Masanobu Kusunoki, Nobuo Takeshima, Michael E. Rogers, MEDICINE AND SCIENCE IN SPORTS AND EXERCISE, MEDICINE AND SCIENCE IN SPORTS AND EXERCISE, 38(5), S332 - S333, May 2006 , Refereed
  • Designing coplanar superconducting lumped-element bandpass filters using a mechanical tuning method, S Hontsu, K Agemura, H Nishikawa, M Kusunoki, IEICE TRANSACTIONS ON ELECTRONICS, IEICE TRANSACTIONS ON ELECTRONICS, E89C(2), 151 - 155, Feb. 2006 , Refereed
    Summary:A coplanar type lumped-element 6-pole microwave Chebyshev bandpass filter (BPF) of center frequency (f(0)) 2.0 GHz and fractional bandwidth (FBW) 1.0% was designed. For the design method, theory of direct coupled resonator filters using K-inverters was employed. Coplanar type lumped-element BPFs are composed of a meander-line L and interdigital C elements. The frequency response was simulated and analyzed using an electromagnetic field simulator (Sonnet-EM). Further, the changes in fo and FBW of the BPF were also realized by the mechanical tuning method.
  • Designing coplanar superconducting lumped-element bandpass filters using a mechanical tuning method, S Hontsu, K Agemura, H Nishikawa, M Kusunoki, IEICE TRANSACTIONS ON ELECTRONICS, IEICE TRANSACTIONS ON ELECTRONICS, E89C(2), 151 - 155, Feb. 2006 , Refereed
    Summary:A coplanar type lumped-element 6-pole microwave Chebyshev bandpass filter (BPF) of center frequency (f(0)) 2.0 GHz and fractional bandwidth (FBW) 1.0% was designed. For the design method, theory of direct coupled resonator filters using K-inverters was employed. Coplanar type lumped-element BPFs are composed of a meander-line L and interdigital C elements. The frequency response was simulated and analyzed using an electromagnetic field simulator (Sonnet-EM). Further, the changes in fo and FBW of the BPF were also realized by the mechanical tuning method.
  • Mechanical tuning of superconducting lumped element filter, S Hontsu, K Iguchi, K Agemura, H Nishikawa, M Kusunoki, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 15(2), 972 - 975, Jun. 2005 , Refereed
    Summary:The tunable filter has variable center frequency (f(o)) and variable bandwidth (BW) that can be adapted to software defined radio. In our mechanical tunable filter, capacitance of each element is changed by motion of dielectric plate that is located above the capacitive elements. The dielectric plates are moved by piezoelectric bimorph actuators. Tuning test of the fo in a cryocooler is performed using an actual superconducting filter fabricated with YBa2Cu3Oy thin film deposited on an MgO (100) substrate. Taking into account of the effective change of parallel capacitance to ground plane by movement of dielectric plates above the element, we choose the coplanar wave guide type filter that has the ground plane on top side of the substrate. Suitable design of the mechanically tunable superconducting lumped element filter is discussed.
  • Protein adsorption on patterned hydroxyapatite thin films fabricated by pulsed laser deposition, M Kusunoki, M Kawasima, H Nishikawa, K Morimoto, T Hayami, S Hontsu, T Kawai, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 44(8-11), L326 - L327, 2005 , Refereed
    Summary:Protein adsorption on hydroxyapatite (HAP) thin film was investigated before and after patterning. Hydroxyapatite thin film 100 nm thick was deposited by pulsed laser deposition. The film was patterned by photolithography and wet etching with HCl solution. Proteins (phospholyrase b, bovine serum albumin, and others) labeled with fluorescein isothiocyanate (FITC) were used as the reagent. After the HAP film was soaked in the reagent and washed with pure water, a conspicuous contrast in FITC was observed between the HAP pattern and the glass substrate (or photoresist). This behavior showed that the biocompatibility of the HAP thin film was not influenced by the patterning process. Our technique for HAP thin film is adaptable for applications involving biosensors as electronic devices and scaffolds for tissue culture.
  • Protein adsorption on patterned hydroxyapatite thin films fabricated by pulsed laser deposition, M Kusunoki, M Kawasima, H Nishikawa, K Morimoto, T Hayami, S Hontsu, T Kawai, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 44(8-11), L326 - L327, 2005 , Refereed
    Summary:Protein adsorption on hydroxyapatite (HAP) thin film was investigated before and after patterning. Hydroxyapatite thin film 100 nm thick was deposited by pulsed laser deposition. The film was patterned by photolithography and wet etching with HCl solution. Proteins (phospholyrase b, bovine serum albumin, and others) labeled with fluorescein isothiocyanate (FITC) were used as the reagent. After the HAP film was soaked in the reagent and washed with pure water, a conspicuous contrast in FITC was observed between the HAP pattern and the glass substrate (or photoresist). This behavior showed that the biocompatibility of the HAP thin film was not influenced by the patterning process. Our technique for HAP thin film is adaptable for applications involving biosensors as electronic devices and scaffolds for tissue culture.
  • Error in surface resistance originating from the dielectric loss of the parallel-plate dielectric resonator using the two-resonators method, M Kusunoki, H Nishikawa, S Hontsu, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 412(414), 1524 - 1527, Oct. 2004 , Refereed
    Summary:An error in surface resistance (R-s) originating from the dielectric loss (tan delta) of the parallel plate dielectric resonator using the two-resonators method is investigated. In the two-resonators method, the error in R-s(DeltaR(s)) due to the difference in tan delta(Delta tan delta) between the TE011 and TE01n mode rods is examined, considering the actual scattering of values of tan delta among sapphire rods. Taking this scattering into account, the projected value of DeltaR(s) cannot be disregarded for general R-s values (about 0.1 mOmega) of HTS films. As a comparative simulation, the case of a single resonator was also considered where the tan delta is neglected in the estimate of R-s. Due to the uncertainty and complexity in the two-resonators method, this method is not so superior to the single-rod resonator measurement by neglecting tan 6 at higher resonance frequency. (C) 2004 Elsevier B.V. All rights reserved.
  • Effect of surface needles on microwave surface resistance in Tl(Ba, Sr)(2)Ca2Cu3Oy superconductor films on a LSAT substrate, A Sundaresan, H Asada, H Kito, Y Tanaka, A Iyo, M Kusunoki, S Ohshima, SUPERCONDUCTOR SCIENCE & TECHNOLOGY, SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 17(3), 350 - 353, Mar. 2004 , Refereed
    Summary:Epitaxial thin films of a Tl(Ba, Sr)(2)Ca2Cu3Oy (Tl-1223) superconductor with a thickness of 5000 Angstrom were grown on a moderate dielectric constant (epsilon = 23.8) substrate (LaAlO3)(0.3) (Sr2AlTaO6)(0.7) (LSAT) in order to study the miniaturization of a superconducting thin film microwave filter. For the annealing conditions followed in this work, we observed two kinds of surface morphology: both of them have a large plate-like morphology with pits but they differ from each other by the presence of needle shaped (a-axis-oriented) grains on top of the plate-like surface. The superconducting transition temperature (T-c) and critical current density (J(c)) for both kinds of films (with and without needles) are about 108 K and similar to0.8 MA cm(-2) at 90 K, respectively. However, the values of the temperature dependence of the microwave surface resistance (R-s) of the films with needles are about one order higher than those for the films without needles, due to the absorption of microwaves by a-axis-oriented needles. The value of R-s for the films without needles at 90 K and 10 GHz is 507 muOmega, which satisfies the requirement for microwave device applications with high performance.
  • R-s measurement of HTS films in millimeter wave region using dielectric resonator method, M Kusunoki, M Inadomaru, D Kousaka, S Ohshima, K Aizawa, M Mukaida, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 392(392), 1241 - 1244, Oct. 2003 , Refereed
    Summary:The parallel plate dielectric resonator was applied to surface resistance (R-s) measurement of high temperature superconducting films with small area for the purpose of material research in early stage. Using 38 GHz resonance of TE013 mode, available measurement area in the film was diameter of 9 mm. From the theoretical calculation, the measurement at higher frequency had an advantage of less error in R-s that is caused by dielectric loss tangent (tan 6). The effect of dielectric loss is negligible at 38 GHz even using a sapphire with order of 10(-7) of tan delta. In lower R-s region, R-s values of YBa2Cu3Oy that were measured at 38 GHz agreed well with that of standard measurement method at 22 GHz. However the difference of R, between two methods became larger with increase of R-s. It is owing to poor signal to noise ratio at higher frequency. (C) 2003 Elsevier B.V. All rights reserved.
  • Fabrication and characterization of a CeO2 buffer layer on c-plane and tilt-c-plane sapphire substrates, M Shirakawa, J Unno, K Aizawa, M Kusunoki, M Mukaida, S Ohshima, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 392, 1346 - 1352, Oct. 2003 , Refereed
    Summary:We have examined in-plane orientation Of CeO2 buffer layers on c-plane and tilt-c-plane sapphire substrates. The tilt angles are 5degrees, 10degrees and 15degrees, which are defined as the angles between the c-plane and the surface planes of the sapphire substrates (called 5degrees, 10degrees, 15degrees tilt-c-plane substrates). The films were prepared by inductively coupled plasma sputtering. The in-plane orientation of the films was measured using X-ray phi-scan. phi-scan peaks of films fabricated on c-plane substrates appeared every npi/6 or npi/12 (n: integer), showing 12-fold or 24-fold symmetry. The in-plane orientation is influenced by the hexagonal symmetry of the sapphire c-plane. The degree of film orientation depends on the substrate temperature during preparation. On the other hand, we found weak 4-fold symmetry for films fabricated on 10degrees and 15degrees. tilt-c-plane substrates. This suggests that we can obtain CeO2 films with perfect 4-fold symmetry on tilt-c-plane sapphire substrates. (C) 2003 Elsevier B.V. All rights reserved.
  • Relationship between the surface resistance and depairing current density of superconductors, S Ohshima, M Kusunoki, M Inadomaru, M Mukaida, Y Tanaka, H Ihara, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 13(2), 3578 - 3580, Jun. 2003 , Refereed
    Summary:We have examined the relationship between the surface resistance and the depairing current density of superconductors. From the two-fluid model and the relationship between the depairing current density and the thermodynamic critical field, we can show that the surface resistance is in inverse proportion to the depairing current density. We also experimentally examined the correlation between the surface resistance and the critical current density of YBCO thin films, and found that the surface resistance is in inverse proportion to the critical current density. The results mean that our theoretical analysis is suitable for predicting the correlation between the surface resistance and the critical current density.
  • Preparation of Tl-2212 and Tl-1223 superconductor thin films and their microwave surface resistance, A Sundaresan, H Asada, A Crisan, JC Nie, H Kito, A Iyo, Y Tanaka, M Kusunoki, S Ohshima, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 13(2), 2913 - 2916, Jun. 2003 , Refereed
    Summary:Epitaxial Tl2Ba2CaCu2Oy and Tl(Ba,Sr)(2)Ca-2 Cu3Oy thin films have been prepared on CeO2 buffered sapphire substrate by an ex situ process with high reproducibility. Microstructure analysis of the surface of the TI-2212 films showed well connected and smaller sized grains of 1 mum or less. In the case of TI-1223 film, plate-like crystals with pits and pin holes could be observed. The superconducting critical temperatures of both films are around 96 K. Critical current density measured by ac susceptibility technique is as high as 1 MA/cm(2) at 77 K. The microwave surface resistance of these films was measured over a wide range of temperatures by a HTS-sapphire-HTS resonator method at 38 GHz on films with area 10 mm x 10 mm. The temperature dependence of surface resistance of TI-2212 film follows very closely to that of the best YBCO films on MgO substrate, whereas the TI-1223 exhibits slightly higher values resulting from an inferior surface morphology.
  • Correlation between vortex distribution and temperature in YBCO films and YBCO-QMG samples, H Yamada, K Moriai, S Kanno, K Aizawa, M Kusunoki, M Mukaida, S Ohshima, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 13(2), 3121 - 3124, Jun. 2003 , Refereed
    Summary:We observed vortices with a modified Bitter method by evaporating nickel as the medium of decoration, in film and QMG (which are made with the quench-and-melt-growth method) YBa2Cu3O7-delta (YBCO) samples. The temperature range of observation was from 25 K to 90 K, and the external magnetic field was 2 mT. Consequently, we found that the vortex structures of these samples were stable from 25 K to near the critical temperature (similar to90 K). The density of vortex was almost three times larger than that estimated from the external magnetic field. This suggests that the vortex motion may be hopping during nickel evaporation.
  • A simple test for high J(c) and low R-s superconducting thin films, A Sundaresan, Y Tanaka, A Iyo, M Kusunoki, S Ohshima, SUPERCONDUCTOR SCIENCE & TECHNOLOGY, SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 16(5), L23 - L24, May 2003 , Refereed
    Summary:A simple method, fishing high-T-c superconductor thin films out of a liquid nitrogen bath by a permanent magnet (field > H-c1), due to the effect of high flux pinning, has been suggested to identify films that have high critical current density (J(c) > 10(6) A cm(-2) at 77 K) and thus a low microwave surface resistance (R-s). We have demonstrated that a Nd-Fe-B magnet, having a maximum field of similar to0.5 T, could fish out TI-1223 superconducting thin films on LSAT substrate with a thickness of similar to5000 Angstrom having J(c) > 1 MA cm(-2) (at 77 K) whereas it could not fish out other films with J(c) < 0.1 MA cm(-2) at 77 K. The fished out films exhibit R-s values 237-245 mum at 77 K and 10 GHz, which is lower than that (R-s = 317 mum) of the commercially available YBCO film at the same temperature and frequency. On the other hand, the non-fishable films show very high R-s values. This method is a very simple tool to test for high J(c) and good microwave properties of large area superconducting films which would otherwise require a special and expensive tool.
  • Preparation of Tl-2212 and -1223 superconductor thin films and their microwave properties, A Sundaresan, H Asada, A Crisan, JC Nie, H Kito, A Iyo, Y Tanaka, M Kusunoki, S Ohshima, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 388(473), 473 - 474, May 2003 , Refereed
    Summary:Tl2Ba2CaCu2Oy (Tl-2212) and Tl(Ba,Sr)(2)Ca2Cu3Oy (Tl-1223) superconductor thin films have been prepared on CeO2 buffered sapphire substrate by an ex situ process namely, amorphous phase epitaxy (APE) method. In the case of Tl-1223, an amorphous layer of TlSr2CaCu2Oy (TlSr-1212) was deposited on top Of CeO2 layer to avoid chemical reaction between Tl-1223, containing Ba, and CeO2 layers. All films are epitaxial with smooth surface and excellent crystallinity. Superconducting transition temperatures (T-c) of Tl-2212 and 1223 are around 95 and 104 K, respectively. Critical current density (J(c)) at 77 K measured on 5 x 5 mm. films by inductive technique is as high as 2 MA/cm(2). Surface resistance R-s of Tl-2212 films measured by a dielectric resonator technique at 38 GHz is comparable to the best YBCO films. (C) 2003 Elsevier Science B.V. All rights reserved.
  • Surface resistance measurement of superconducting thin film using probe-coupling-type microstrip line resonator, D Okai, M Kusunoki, M Mukaida, S Ohshima, ELECTRONICS AND COMMUNICATIONS IN JAPAN PART II-ELECTRONICS, ELECTRONICS AND COMMUNICATIONS IN JAPAN PART II-ELECTRONICS, 86(4), 27 - 35, 2003 , Refereed
    Summary:To design superconducting microwave receivers, the surface resistance of the superconducting thin film must be considered. Therefore, a. highly accurate technique for measuring the surface resistance of superconducting thin films should be established. In this paper, we propose a probe-coupled microstrip line resonator as a technique for measuring the surface resistance of superconducting thin films. In the resonator technique, the surface resistance is calculated from Q(u), the unloaded Q, of the resonator. Since the microstrip line resonator searches for an accurate surface resistance of the superconducting thin film, establishing a technique that accurately determines the Q(u) of the resonator is crucial. We measure the Q(u) values of resonators fabricated from metal and superconducting thin film by a probe-coupled microstrip line resonator and describe the accuracy of Q(u) measurement by the probe-coupled micro-strip line resonator and the repeatability of the surface resistance measurement of a superconducting thin film. (C) 2003 Wiley Periodicals, Inc.
  • Demonstration of surface resistance mapping of large-area HTS films using the dielectric resonator method, M Kusunoki, Y Takano, K Nakamura, M Inadomaru, D Kosaka, A Nozaki, S Abe, M Yokoo, M Lorenz, H Hochmuth, M Mukaida, S Ohshima, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 383(4), 374 - 378, Jan. 2003 , Refereed
    Summary:A scanning mapping technique of surface resistance (R-s) using the sapphire dielectric resonator was developed and demonstrated for a 3-inch-diameter YBa2Cu3Oy film. The area of the 3-inch film was divided by 5 x 5 nun grid for scan, resulting in 101 measurement points. Values of R, in the film varied from 2.9 to 3.8 mOmega at 22 GHz and 77 K. The distribution of R-s corresponded to that of the critical current density. Sampling of quality factors at each point was performed using non-contact measurement between film and sapphire. Since the airtight chamber was filled with dry N-2 gas to avoid film degradation by frost and water during the warming process, perfect non-destructive measurement is realized. Fluctuation of distance between the surface of film and dielectric rod was monitored by resonance frequency. Errors in R-s caused by the fluctuation were calculated within 0.01 mOmega. Furthermore, the system could detect a small (0.3 mm x 0.5 nun) scratch defect as well as the gradient of film thickness on Ag film. This technique is effective for inspection of large-area high temperature superconducting films for microwave applications. (C) 2002 Elsevier Science B.V. All rights reserved.
  • Observation of vortex distribution in YBCO-QMG samples and YBCO thin films, H Yamada, K Moriai, S Kanno, K Aizawa, M Kusunoki, M Mukaida, S Ohshima, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 378, 554 - 559, Oct. 2002 , Refereed
    Summary:We have examined vortex distribution of YBa2Cu3O7-delta (YBCO, Y-123) films and YBCO-QMG samples. The vortices were observed by the Bitter method using the decoration of the fine magnetic particles. Observation of vortex distribution was done in the temperature range between 25 and 90 K in the magnetic field range between 0 and 10 mT. We found that vortices of YBCO films and YBCO-QMG samples did not move at 25 K and moved slightly at 75 K, and the interface of the Y2BaCuO5 (Y-211) and Y-123 phases of the YBCO-QMG sample works as pinning center. (C) 2002 Elsevier Science B.V. All rights reserved.
  • Control of grain size by initial growth stage of YBCO thin films, M Mukaida, S Sato, Y Takano, M Kusunoki, S Ohshima, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 378(1232), 1232 - 1235, Oct. 2002 , Refereed
    Summary:A grain size control technology will be described. YBa2Cu3O7-delta thin films are grown by a pulsed laser deposition method in 400 mTorr oxygen atmosphere. The films are grown by a self-template method with various self-template growth temperatures. However the temperature of the main YBa2Cu3O7-delta layer was fixed. Grain size of YBa2Cu3O7-delta thin films on MgO substrates are observed by atomic force microscope. Mean diameter of grains are calculated by the number of grains in scanned area of 1 x 1 mum(2). The mean diameters are 2.49 x 10(2), 2.89 x 10(2), 4.047 x 10(2) and 4.192 x 10(2) nm for films with an initial layer growth temperature of 670, 690, 714 and 730 degreesC, respectively. Grain size is found to depend on the initial growth stage of the YBa2Cu3O7-delta thin film growth. These grain sizes have a strong relationship with the inverse of substrate temperature indicating thermally excited migration of YBa2Cu3O7-delta nuclei. It is also clarified that migration length of YBa2Cu3O7-sigma nucleus is longer on an YBa2Cu3O7-delta films than on MgO substrates. (C) 2002 Elsevier Science B.V. All rights reserved.
  • Dielectric loss tangent of sapphire single crystal produced by edge-defined film-fed growth method, M Kusunoki, M Inadomaru, S Ohshima, K Aizawa, M Mukaida, M Lorenz, H Hochmuth, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 377(3), 313 - 318, Sep. 2002 , Refereed
    Summary:We investigated the dielectric loss tangent (tan delta) of sapphire single crystals produced by edge-defined film-fed growth (EFG) method using a dielectric resonator with YBa2Cu3Oy (YBCO) films. Surface resistance (R-s) of the YBCO film was low enough to obtain high resolution of tan 6 measurement. For comparison, tan delta of the sapphire prepared by the Czochralsky (Cz) method was also evaluated. Measurements of 14 sapphire rods showed that EFG sapphire tends to have lower tan delta than Cz sapphire, while defects in Cz crystal were 1/14-1/2 less than that in EFG crystal. It means that the number of defects does not influence tan delta, if the density of defects is within the order of 10(4)/cm(2). In most EFG sapphire the value of tan 6 at 30 K was estimated to be < 1.0 x 10(-7). It is usable for R-s measurement of high critical temperature superconducting materials. (C) 2002 Elsevier Science B.V. All rights reserved.
  • The correlation of the critical current density and surface resistance of YBa2Cu3O7-delta thin films, S Ohshima, S Oikawa, T Noguchi, M Inadomaru, M Kusunoki, M Mukaida, H Yamasaki, Y Nakagawa, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 372, 671 - 674, Aug. 2002 , Refereed
    Summary:We have examined the correlation between the critical current density (J(c)) and the surface resistance (R-s) of an YBa2Cu3O7-delta (YBCO) thin film. YBCO films were prepared in an inductively coupled plasma sputtering system on MgO and BSO/MgO substrates. BaSnO3 (BSO) was used as a buffer material for the MgO substrates. J(c) was determined by magnetic measurements, and R-s was measured using a sapphire rod resonator method, The correlation of critical current and surface resistance has been reported previously, however. there is few researches in which a systematic correlation of R-s and J(c) using the same sample has been done. To begin with, we measured R-s by the dielectric resonator method, and next, J(c) was measured using the magnetic field method, As a result, it was proven that there was a strong correlation between R-s and J(c). We found that the relationship between J(c) and R-s (at 22 GHz) could be expressed by the following equation, R-s = 2.0 x 10(7) J(c)(-1), where the unit of R-s is the ohm, and the unit of J(c) is A/m(2). It was found that the relation was applicable in a wide temperature range under T,. The value of the surface resistance can be estimated. if an accurate critical current is obtained. (C) 2002 Elsevier Science B.V. All rights reserved.
  • Superconducting antennas for telecommunication applications based on dual mode cross slotted patches, A Cassinese, M Barra, Fragala, I, M Kusunoki, G Malandrino, T Nakagawa, LMS Perdicaro, K Sato, S Ohshima, R Vaglio, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 372, 500 - 503, Aug. 2002 , Refereed
    Summary:Dual mode devices based on high temperature superconducting films represent an interesting class for telecommunication applications since they combine a miniaturized size with a good power handling. Here we report on a novel compact antenna obtained by crossing a square patch with two or more slots. The proposed design has an antenna size reduction of about 40% as compared to the conventional square patch microstrip antennas. Single patch antenna both with linear (LP) and circular (CP) polarization operating in the X-band have been designed and tested at prototype level. They are realized by using double sided (YBa2Cu3O7-x) YBCO and TI2Ba2Ca1Cu2O8 (TI-2212) superconducting films grown on MgO substrates and tested with a portable cryocooler. They showed at T = 77 K a return loss <25 dB and a power handling of 23 dBm. Exemplary 16 elements arrays LP antennas operating in the X band have been also realized by using YBCO film grown on 2" diameter MgO substrate. (C) 2002 Elsevier Science B.V. All rights reserved.
  • Superconducting miniaturized antennas based on dual-mode cross-slotted patches, M Barra, A Cassinese, Fragala, I, M Kusunoki, G Malandrino, T Nakagawa, LMS Perdicaro, K Sato, S Ohshima, R Vaglio, SUPERCONDUCTOR SCIENCE & TECHNOLOGY, SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 15(4), 581 - 585, Apr. 2002 , Refereed
    Summary:The use of high-temperature superconducting films for the fabrication of antennas allows us to realize radiating structures that are small in size and have a very high efficiency. In this paper, we investigate the properties of a novel compact antenna obtained by crossing a square patch with diagonal and transverse slots. Single patch antennas, with both linear and circular polarization operating in the X-band, with a size reduction of about 40% as compared to conventional square patches, have been designed and tested at prototype level. They have been realized by using double-sided YBa2Cu3O7-x,(YBCO) and Tl2Ba2Ca1Cu2O8(Tl-2212) superconducting films grown on MgO substrates and have been measured using a portable cryocooler. At T = 77 K, the experimental scattering parameter, S11, agrees well with simulations, showing a power handling of 23 dBm for YBCO devices. The miniaturized patch antenna investigated has allowed us to realize a 4 x 4 array of linear polarization antennas at 11.5 GHz, using a YBCO film grown on a MgO substrate with a 2" diameter, by considering a reduced interspace (more than 20%) between the elements. The far-field pattern and the 16-array gain are in good agreement with the simulated results.
  • Design of cross-coupled microstrip bandpass filter, T. Kinpara, M. Kusunoki, M. Mukaida, S. Ohshima, Physica C: Superconductivity and its Applications, Physica C: Superconductivity and its Applications, 357-360(1), 1503 - 1506, Sep. 2001 , Refereed
    Summary:High-temperature superconducting microwave filters were designed for the W-CDMA communication system. Frequency responses of the filters were calculated by the electromagnetic simulator "Sonnet-em". A cross-coupled 8-pole microstrip line filter shows 1.949 GHz of center frequency and 1.04% of transmission fractional bandwidth on the LaAlO3, and 1.950 GHz of center frequency and 1.02% of transmission fractional bandwidth on the Al2O3. © 2001 Elsevier Science B.V. All rights reserved.
  • Observation of vortices in the high-temperature superconductor, S Kanno, T Kawai, S Satou, K Aizawa, M Kusunoki, M Mukaida, S Ohsima, S Hayashi, T Nishizaki, N Kobayashi, PHYSICA C, PHYSICA C, 357, 625 - 628, Aug. 2001 , Refereed
    Summary:We have observed vortices of the high-temperature superconductor using the Bitter technique. Hopping movement of vortices of Y-123 and Bi-2212 single crystal was observed in the temperature range of 50-90 K (T-c) by the thermal energy. We estimated pinning potential by migration length, The pinning potential, we have also observed the vortex pattern of Y-123 QMG sample including Y-211 phase. We found that vortex existed in the grain boundary of Y-211 and Y-123 phase. (C) 2001 Elsevier Science B.V. All rights reserved.
  • New surface resistance measurement technique of high-temperature superconductors using a probe coupling microstrip line resonator, D Okai, M Kusunoki, M Mukaida, S Ohshima, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 11(1), 3078 - 3081, Mar. 2001 , Refereed
    Summary:We have developed a new surface resistance (R-s) measurement technique of high-temperature superconductors using a probe coupling microstrip line resonator. In this technique, the probe coupling method is used to measure the R-s of superconductors without attaching any contacts to the superconductors, This paper reports the measurement process of the R-s of a superconducting fine-wire using this technique. The quality Factors of the copper wires, gold fine-wire and the Bi-Sr-Ca-Cu-O whisker crystal were measured by the probe coupling resonator method. The measurement results revealed that this technique is feasible for the R-s measurement of the superconducting fine-wire.
  • Miniaturized cooling systems for HTS antennas, K Ehata, K Sato, M Kusunoki, M Mukaida, S Ohshima, Y Suzuki, K Kanao, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 11(1), 111 - 114, Mar. 2001 , Refereed
    Summary:Two types of miniaturized cooling systems for High-Temperature Superconducting (HTS) antennas were designed and built, In this paper, details of these systems, measured and simulated properties of patch antennas installed in these systems, and results of a seal-off trial for 1 month are reported, Both the systems had portable size and weight and could cool the HTS devices. When a patch antenna with resonant frequency of 4.9 GHz was installed in the Ist cooling system, the radiation pattern of the antenna was strongly focused in the forward direction. This is because the vacuum chamber in which the antenna was packaged influenced the microwaves radiated from the antenna. Due to this effect, the directive gain of the antenna was enhanced by 11.2 dB. In the 2nd system, a seal-off-trial was carried out to investigate the airtight property that is necessary for thermal isolation. The temperature of the sample stage could be kept under the critical temperature of YBCO for 1 month without continuous vacuum pumping. The cooling systems developed in this work are expected to promote the practical use of HTS antennas.
  • High-quality Y-Ba-Cu-O thin films by PLD - Ready for market applications, M Lorenz, H Hochmuth, D Natusch, M Kusunoki, VL Svetchnikov, Riede, V, Stanca, I, G Kastner, D Hesse, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 11(1), 3209 - 3212, Mar. 2001 , Refereed
    Summary:Large-area poised laser deposition (PLD) has reached a state in terms of film quality and reproducibility which makes possible now real market applications of PLD-YBa2Cu3O7-delta (YBCO) thin films on both sides of it-plane sapphire substrates as HTSC devices in satellite and mobile communication systems. Bandpass filters optimized from PLD-YBCO thin films presently fulfill the requirements of the main national companies which are active in future communication techniques. A relatively simple PLD arrangement with fixed laser plume and rotating substrate, with an offset between the laser plume and the center of the substrate is employed to deposit laterally homogeneous 3-inch diameter Ag-doped YBCO thin films. With the experience of more than 1,000 doable-sided 3-inch diam, films a high degree of homogeneity and reproducibility of j(c) and R-s is reached. The extension up to 8-inch substrate diameter will increase the productivity of the flexible PLD technique considerably.
  • Precise surface resistance measurements of YBa2Cu3Oy films with the dielectric resonator method, H. Obara, S. Kosaka, A. Sawa, H. Yamasaki, Y. Kobayashi, T. Hashimoto, S. Ohshima, M. Kusunoki, M. Inadomaru, Physica C: Superconductivity and its Applications, Physica C: Superconductivity and its Applications, 357-360, 1511 - 1515, 2001 , Refereed
    Summary:The surface resistance of high-Tc superconducting films at microwave frequencies was carefully measured by the dielectric resonator method using two sapphire rods. The dielectric resonator method is appropriate for the standard measurement of surface resistance at microwave frequencies. In the present work, we focused on asymmetry in coupling and the parasitic coupling effect which cause error in this method and discussed the precision and accuracy of the measurements. Finally, we report on a round robin test in which the observed surface resistances in three institutes gave good agreement. These results were reflected in the working draft of the International Electrotechnical Commission Technical Committee 90 (IEC/TC90). © 2001 Elsevier Science B.V.
  • Development of a miniaturized cooling system for HTS antennas and its seal-off property, K. Ehata, K. Sato, M. Kusunoki, M. Mukaida, S. Ohshima, Y. Suzuki, K. Kanao, Physica C: Superconductivity and its Applications, Physica C: Superconductivity and its Applications, 357-360, 1507 - 1510, 2001 , Refereed
    Summary:Measured results and discussion on vacuum seal-off property of a cooling system for high-temperature superconducting antennas are reported. The cooling system was designed and fabricated and its cryogenic packaging was investigated. Vacuum seal-off tests were performed and high vacuum for thermal isolation could be kept for 25 days. On the cold stage of the system, some kinds of gas, including H2O and CO2, were adsorbed on a cold stage. © 2001 Elsevier Science B.V.
  • Strain induced synthesis of high temperature superconducting thin films, M Mukaida, S Makino, K Chiba, M Kusunoki, S Ohshima, PHYSICS IN LOCAL LATTICE DISTORTIONS: FUNDAMENTALS AND NOVEL CONCEPTS LLD2K, PHYSICS IN LOCAL LATTICE DISTORTIONS: FUNDAMENTALS AND NOVEL CONCEPTS LLD2K, 554, 512 - 516, 2001 , Refereed
    Summary:Microstructures of YBa2Cu3O7 (delta) / BaSnO3 superlattice are analyzed by Transmission electron microscopy. YBa2Cu3O7 (delta) / BaSnO3 superlattices are fabricated by a pulsed laser deposition technique with in-situ rotation of target materials. Typical growth conditions of substrate temperature and oxygen pressure are 710 degreesC and 400 mTorr, respectively. A few nm thick BaSnO3 insulating layers and YBa2Cu3O7-delta superconducting layers are sequentially deposited with total thickness of around 150 nm. Crystallographic characteristics of these superlattices are evaluated by x-ray diffractometry (XRD) and transmission electron microscopy (TEM). Several layers of YBa2Cu3O7 (delta) and BaSnO3 are clearly observed by TEM. The observed thickness of one layer of YBa2Cu3O7-delta and that of BaSnO3 films are 12 nm and 6.5 nm, respectively From a high-resolution TEM observation, the strain induced by lattice length difference between YBa2Cu3O7 (delta) and BaSnO3 are released by introducing misfit dislocations in the YBa2Cu3O7 (delta) films not in the BaSnO3 films. A new insulating layer is required with small lattice mismatch to YBa2Cu3O7-delta for avoiding introduction of misfit dislocations.
  • Fabrication of low Rs YBCO films and its application to patch antennas, S Ohshima, Y Takano, M Mukaida, M Kusunoki, K Ehata, K Chiba, T Suzuki, M Inadomaru, PHYSICA C, PHYSICA C, 341, 2565 - 2568, Nov. 2000 , Refereed
    Summary:We have examined that how to reduce the surface resistance, Rs of YBCO films, and found that control of the in-plane alignment of the YBCO films was very important to realize that. The in-plane alignment of the YBCO films on MgO substrates could be controlled by the BaSnO3(BSO) buffer layers, and self-template method. We also examined YBCO patch antenna and its compact cooling system. The compact cooling system was easy to keep YBCO patch antennas in the superconducting state.
  • Optimum configuration of the antenna to the dielectric resonator to measure the accurate surface resistance of the HTS films, M Inadomaru, D Kousaka, M Kusunoki, M Mukaida, S Ohshima, ADVANCES IN SUPERCONDUCTIVITY XII, ADVANCES IN SUPERCONDUCTIVITY XII, 5, 1069 - 1071, 2000 , Refereed
    Summary:The configuration of the antenna of the dielectric resonator is investigated to measure the exact surface resistance (R-s) of the high temperature superconductor (HTS) thin films over a wide range of temperature. The sapphire dielectric resonator is operated at 22GHz. The loop-terminated semi-rigid cables are used as the antennas. Using a Cu resonator at room temperature, the circumference length of the loop (L), the distance from the dielectric center to the loop center (d), and the height of the loop plane from the substrate surface (h) were changed. It is found that the smaller loop set at a position halfway to the height of the dielectric rod brought the widest region of d in which exact measurements can be carried out. This result was then applied using a HTS resonator. In order to measure exact Q(u) over a wide temperature region from low temperature to the critical temperature, weak coupling rather becomes a disadvantage. The best position of the antenna can be obtained when insertion loss set around -10dB at minimum temperature of the system.
  • Microwave surface resistance of YBa2Cu3Oy thin films prepared by inductive coupled plasma sputtering, T Suzuki, S Sato, M Kusunoki, M Mukaida, S Ohshima, ADVANCES IN SUPERCONDUCTIVITY XII, ADVANCES IN SUPERCONDUCTIVITY XII, 5, 1048 - 1050, 2000 , Refereed
    Summary:The YBa2Cu3Oy (YBCO) film having low surface resistance (RS) was prepared using an inductive coupled plasma sputtering technique. To increase the low deposition rate, a new self-template method was examined. The YBCO films fabricated on the 21-nm-thick template YBCO layer were c-a ris oriented grain perfectly and successfully grew even at 3 times higher deposition rate. However, the R-s was not low enough, due to the in-plane misaligned grains. Therefore, the BaSnO3 (BSO) buffer was used to obtain perfect in-plane aligned grains. The R-s value of the YBCO/YBCO-template/BSO/MgO film was 0.38 m Omega at 35 K and 1.13 m Omega at 77 K in measurement frequency 22 GHz. The R-s values scaled to 10 GHz were 0.08 m Omega at 35 K and 0.23 m Omega at 77 K, respectively.
  • Fabrication of double-sided YBa2Cu3O7-delta/BaSnO3 thin films by laser ablation, K Chiba, D Kousaka, M Mukaida, M Kusunoki, S Ohshima, ADVANCES IN SUPERCONDUCTIVITY XII, ADVANCES IN SUPERCONDUCTIVITY XII, 5, 924 - 926, 2000 , Refereed
    Summary:YBa2Cu3O7-delta(YBCO)/BaSnO3(BSO) thin films are successfully deposited by laser ablation on both sides of [100] MgO substrate. At first, YBCO/BSO thin films were grown to estimate BSO critical thickness. The critical thickness of BSO for YBCO in-plane orientation is found to be approximately 2nm. Using this condition, double-sided YBCO/BSO films are grown on both sides. In-plane orientation for both sides indicates the absence of impurity phases. The full width at half maximum (FWHM) of the YBCO (005) peak for both sides is similar to 0.50 degrees. The surface resistances in both sides at 22GHz are approximately 1.0 m Omega at 35K.
  • Design, fabrication, and characterization of patch antenna using superconducting thin film, K Ehata, M Kusunoki, S Ohshima, ELECTRONICS AND COMMUNICATIONS IN JAPAN PART II-ELECTRONICS, ELECTRONICS AND COMMUNICATIONS IN JAPAN PART II-ELECTRONICS, 82(11), 59 - 69, Nov. 1999
    Summary:The surface resistance of superconductors is smaller than that of normal conductors by several orders of magnitude. Hence, a superconducting microwave device has lower loss and higher performance than a normal conducting one. Since the mobile communication systems have become popular and cryocoolers of small size and light weight have been fabricated in recent years, research activity on superconducting microwave devices has been enhanced. In this paper, the design, fabrication, and characterization of a patch antenna using a high-temperature superconducting thin film are reported. It is demonstrated that the superconducting patch antenna has higher gain than a normal conducting one. The temperature dependence of the resonant frequency, the input resistance, and the power handling properties are also discussed. (C) 1999 Scripta Technica.
  • Effect of surface impedance on the antenna properties in superconducting microstrip antenna, MI Ali, K Ehata, M Kusunoki, S Ohshima, PHYSICA C, PHYSICA C, 325(3-4), 143 - 152, Nov. 1999 , Refereed
    Summary:The complex surface impedance (Z(s)) of a superconductor is comprised of two unequal components, surface resistance (R-s) and surface reactance (X-s). We have investigated the effects of R-s and X-s on the YBa2Cu3O7-x (YBCO) superconducting microstrip antenna properties (resonant frequency, input impedance, and gain) by theoretical analysis and experimentation. The antennas were fabricated from YBCO thin films on (100) MgO single crystal substrate at 11.7 GHz. The investigation of the antenna properties reveals that the X-s of the superconducting thin film mainly influences the antenna resonant frequency (f(r)) and has small influence on the antenna input impedance (R-m). On the other hand, R-s mainly affects the input impedance of the antenna. The antenna gain, and hence the efficiency, is found to be influenced by the film surface resistance. The antennas were characterized in the temperature range of 10-90 K. Possible influences of the substrate dielectric properties (permittivity, epsilon(r) and loss tangent, tan delta) on the antenna properties were also considered in the investigation. (C) 1999 Elsevier Science B.V. All rights reserved.
  • Design, fabrication, and characterization of patch antenna using superconducting thin film, K Ehata, M Kusunoki, S Ohshima, ELECTRONICS AND COMMUNICATIONS IN JAPAN PART II-ELECTRONICS, ELECTRONICS AND COMMUNICATIONS IN JAPAN PART II-ELECTRONICS, 82(11), 59 - 69, Nov. 1999 , Refereed
    Summary:The surface resistance of superconductors is smaller than that of normal conductors by several orders of magnitude. Hence, a superconducting microwave device has lower loss and higher performance than a normal conducting one. Since the mobile communication systems have become popular and cryocoolers of small size and light weight have been fabricated in recent years, research activity on superconducting microwave devices has been enhanced. In this paper, the design, fabrication, and characterization of a patch antenna using a high-temperature superconducting thin film are reported. It is demonstrated that the superconducting patch antenna has higher gain than a normal conducting one. The temperature dependence of the resonant frequency, the input resistance, and the power handling properties are also discussed. (C) 1999 Scripta Technica.
  • Effect of the CeO2 buffer layer thickness on the microwave properties of YBCO thin films, KD Develos, M Kusunoki, M Mukaida, S Ohshima, SUPERCONDUCTOR SCIENCE & TECHNOLOGY, SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 12(11), 887 - 889, Nov. 1999 , Refereed
    Summary:We have examined the effect of varying the CeO2 buffer layer thickness on the microwave surface resistance R-s and surface morphology of YBCO films deposited by pulsed laser deposition. Above the critical thickness value d(c) of CeO2 at similar to 90 nm, the surface roughness and areal density of outgrowths of the film increased significantly. The YBCO films grown on CeO2 with thickness less than d(c) were completely c-axis oriented and had lower c-axis lengths than those grown on CeO2 with thickness greater than d(c). R-s measured via the sapphire dielectric resonator technique was significantly lower for the YBCO film grown on CeO2 with thickness less than d(c). The increase in the R-s value when the buffer layer thickness is greater than d(c) is considered to be due to the increased surface outgrowths and presence of a-axis domains in the YBCO film. Changes in the microstructure and orientation of the YBCO films were found to be strongly influenced by the underlying CeO2 layer.
  • Observation of vortex movement in oxide superconductors by means of the bitter pattern technique, Shigetoshi Ohshima, Akira Kamimura, Masanobu Kusunoki, IEEE Transactions on Applied Superconductivity, IEEE Transactions on Applied Superconductivity, 9(2), 2187 - 2190, 1999 , Refereed
    Summary:The high-resolution Bitter pattern technique has been used to observe vortex movement of oxide superconductors, Bi2St2CaCu2Oz (BI2212). The Bitter pattern was observed in field-cooled (FC) and zero-field cooled (ZFC) experiments. We also examined vortex movement of the BI2212 single crystal in which transport current was applied parallel to the c plane, and a de magnetic field applied normal to the c plane at the Ni decoration. The Ni decoration pattern was observed using a scanning electron microscope (SEM) and an atomic force microscope ( AFM). Through observation of the Ni decoration pattern, we can identify vortex movement. The vortices moved into the sample on FC experiment, and the direction of vortex movement was approximately normal to the edge of the sample. We also found the vortex movement in a line under application of transport currents. They moved hopping among pinning centers due to Lorentz force. © 1999 IEEE.
  • Microwave surface resistance of YBCO thin films on cerium oxide buffer, M. Kusunoki, T. Suto, D. Okai, Y. Takano, M. Mukaida, S. Ohshima, IEEE Transactions on Applied Superconductivity, IEEE Transactions on Applied Superconductivity, 9(2), 1932 - 1935, 1999 , Refereed
    Summary:The effects of the crystallinity and surface roughness of CeOz buffer on It-plane A1}O3 substrate on the microwave surface resistance (RJ of YBBjCUjO YBCO) thin films are discussed. We estimated Rf from the transmission characteristics of the microstrip line resonator at 25 K and 6.7 GHz. X-ray diffraction (XRD) of 6-26 and -scan showed that CeO, was completely (OOl)-oriented and in-plane aligned crystal Four CeO: samples with different thicknesses were prepared nsing identical conditions except for the deposition time. The dependence of Rf on CeO, thickness was measured in the range from 10 nm to 200 nm. The value of Rt was minimum at CeO2 thickness of 100 nm. The dependence of A( vs CeO2 thickness was similar to that of the amount of a-axis domains against the thickness. The crystallinity of thin CeOj was poor because the lattice was strongly strained by A12O3. This affected the quality of the upper YBCO layer. In contrast, thick CeO2 had excellent crystallinity. However, for the thickness of more than 100 nm a drastic change in surface morphology was observed by atomic force microscopy (AFM). A number of projections appeared on the CeO,surface. These projections act as nucleation centers for the a-axis domains. © 1999 IEEE.
  • Studies on the surface morphology and orientation of CeO2 films deposited by pulsed laser ablation, KD Develos, N Kusunoki, S Ohshima, JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 37(11), 6161 - 6169, Nov. 1998 , Refereed
    Summary:We studied the surface morphology and orientation of CeO2 films grown by pulsed laser ablation (PLA) on r-cut (1 (1) over bar 02) Al2O3 substrates and evaluated the effects of predeposition annealing conditions of Al2O3 and film thickness of CeO2, The annealing of Al2O3 substrates improves the smoothness of the surface and performing this in high vacuum leads to better crystallinity and orientation of deposited CeO2 films compared to those annealed in oxygen. A critical value of the film thickness was found beyond which the surface roughness increases abruptly. Atomic force microscopy (AFM) study showed that the surface of CeO2 films is characterized by a mazelike pattern. Increasing the film thickness leads to the formation of larger islands which cause the increase in the surface roughness of the films. The areal density and height of these islands increased with film thickness.
  • Preparation of YBa2Cu3Oy thin films using induction-coil-coupled sputtering, Masanobu Kusunoki, Akira Osuka, Katsufumi Ehata, Sigetoshi Ohshima, Hirosi Masumoto, Toshio Hirai, Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, 61(9), 951 - 955, 1997 , Refereed
    Summary:YBa2Cu3Oy (YBCO) superconducting thin films were deposited on MgO single crystals by induction-coil-coupled sputtering. The effects of the induction coil on the qualities of YBCO thin films are examined. Uniformity of film thicknesses below ±5% was obtained over an area of 40 mm diameter using a 50 mm diameter target by the condition of the substrate-target distance of 90 mm. Even in the area of 60 mm diameter which was wider than that of the target, the uniformity of thickness within ±17% was obtained. In order to clarify the effects of the induction-coil, we studied the dependence of the critical temperature (Tc) and the full width at half maximum (FWHM) of the films on the applying power of coil. Tc and FWHM showed optimum values at the applying coil power of 70W. It is confirmed from these results that the induction-coil operated effectively to fabricate high quality films. The epitaxial relations of YBCO films on MgO single crystal substrates were examined by X-ray pole figure measurements. Basically film of YBCO was aligned with the c-axis perpendicular to the substrate surface. The film deposited at the coil power of 70W exhibited well single-oriented grains with the a- or b-axis parallel to the a-axis of MgO. However, films deposited at the applying coil power of 0W contained grains with two different orientations which were rotated by 45°. Scanning electron microscopy (SEM) of the film surface showed the films to consist of a smooth background surface and a distribution of particles. Energy dispersive X-ray analysis (EDAX) measurements showed that the Ba concentration was larger than that of exact stoichiometric composition. Auger electron spectroscopy (AES) revealed that the elements contained in the particles were richer in Ba than in the smooth background surface. The BaCuO2 particles seemed to precipitate on the surface of the film.
  • Variations of order parameter and bias current distribution with time in thin film superconducting lines, Hiroya Andoh, Masaru Kito, Masanobu Kusunoki, Akira Fujimaki, Hisao Hayakawa, Superconductor Science and Technology, Superconductor Science and Technology, 9(4A), A55 - A58, 1996 , Refereed
    Summary:We study variations of the order parameter and the vector potential with time using the rescaled time-dependent Ginzburg-Landau (TDGL) equation. Computer simulations for several conditions are performed to discuss the bias current distribution and the time necessary for the transition from the normal state to the superconducting state for the superconducting narrow line. As a result, we have found that the time necessary for the transition from the normal state to the superconducting state is an important factor to explain the I-V characteristics due to the vortex motion in superconducting narrow lines. © 1996 IOP Publishing Ltd.
  • SUPERCONDUCTING FLUX-FLOW TRANSISTORS WITH SUBMICROMETER STRUCTURES, M KUSUNOKI, H AKAIKE, A FUJIMAKI, H HAYAKAWA, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 5(2), 3389 - 3392, Jun. 1995 , Refereed
    Summary:A miniaturization of high critical temperature (T-c) superconducting flux flow transistor (SFFT) was studied. The weak link width in the direction of the vortex flow was varied from 5 mu m to 10 mu m. The weak link length in the direction of bias current flow was fixed to 5 mu m. An increase in the gain was observed as the weak link width decreased. A control line was placed close to the weak link in the distance of 0.5 mu m to compensate for a decrease of magnetic sensitivity due to the miniaturization. We also improved the characteristics of the SFFT by forming a corrugated structure, which is named corrugation flux flow transistor (CFFT). A submicron patterning of YBa2Cu3Oy (YBCO) thin film was performed using focused ion beam lithography. Furthermore, we demonstrated a micro flux flow transistor (MFFT) consisting of a single bridge. The MFFT also operated as well as the CFFT.
  • COMPUTER-SIMULATIONS OF DYNAMICS OF VORTEX LINES IN SUPERCONDUCTING FLUX-FLOW TRANSISTORS, H ANDOH, M KUSUNOKI, A FUJIMAKI, H HAYAKAWA, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 5(2), 3377 - 3380, Jun. 1995 , Refereed
    Summary:We study the dynamics of vortex lines in superconducting flux flow transistors (SFFT's) made of High T-c superconductors, YBa2Cu3Ox. By computer simulations we have found that the density of vortex lines in SFFT's has close relation to device I-V characteristics rather than the velocity of vortex lines and that we have to increase the density of vortex lines to get ones with available gain. To be more concrete, in order to increase the density of vortex lines we have to lower surface barriers at the edge of weak-links and heighten the magnetic field near the edge of weak links. Especially, it is very important to heighten the magnetic field at the both sides of a link in a SFFT. Under the control of the control current, vortex lines in a SFFT are driven by the transport current (the bias current) mainly, but it is important to think the other forces such as the force by screening current, the force induced by the other vortices and the force induced by the image vortices. Based on the local stochastic equation of motion for vortex lines, computer simulations for some conditions are performed to discuss the dynamic behavior of vortex lines in a SFFT. We report the effect of the external magnetic field induced by the control current on the motion of vortex lines in SFFT's.
  • NUMERICAL-ANALYSIS OF INFLUENCE OF SURFACE-BARRIER ON CURRENT-VOLTAGE CHARACTERISTICS FOR NARROW SUPERCONDUCTING LINES, H ANDOH, M KUSUNOKI, A FUJIMAKI, H HAYAKAWA, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 34(4A), L408 - L411, Apr. 1995 , Refereed
    Summary:The variation of critical current density with reduced line width and the temperature dependence of voltage for superconducting narrow lines are calculated theoretically. Critical currents of superconducting narrow lines increase progressively as the lines become narrower. The surface barriers for superconducting narrow lines are discussed in order to understand the progressive increase in critical currents of superconducting narrow lines. Furthermore, the thermally activated flux lines jumping over the surface barrier are discussed ill order to understand the temperature dependence of voltage for superconducting narrow lines. The results of calculation using the surface barriers agree well with experimental results.
  • Systematic measurement of critical current density for narrow YBa2Cu3Oy, lines, Masanobu Kusunoki, Hiroya Andoh, Akira Fujimaki, Hisao Hayakawa, Japanese Journal of Applied Physics, Japanese Journal of Applied Physics, 34(5), L612 - L614, 1995 , Refereed
    Summary:Critical current densities (Jc’s) of submicron YBa2CuaOy (YBCO) lines were studied. Increase in Jc with reduc­tion of line width (w) was observed reproducibly, when temperature rise of the substrate is suppressed during plasma etching of YBCO. Intermittent etching and liquid-nitrogen cooling were very effective in obtaining sufficient cooling. Temperature dependence of current-voltage characteristics was interpreted in terms of thermal­ly activated vortex motion. This result indicated the existence of a potential barrier to vortex motion. In particu­lar, the surface barrier played an important role in determining Jc in the submicron lines. Furthermore, the depen­dence of Jc on w was strongly dependent on the current concentration to the edges due to Meissner effect. © 1995 The Japan Society of Applied Physics.
  • SUBMICRON PATTERNING TECHNIQUE FOR YBA2CU3OY FILMS USING FOCUSED ION-BEAM LITHOGRAPHY, M KUSUNOKI, H AKAIKE, A FUJIMAKI, H HAYAKAWA, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 33(8A), L1124 - L1127, Aug. 1994 , Refereed
    Summary:We have developed a new technique for YBa2Cu3Oy (YBCO) submicron structure formation. Nb films serving as etching masks are patterned into line structures with submicron dimensions, using focused ion beam lithography and a vertical etching technique of the Nb films. Then the mask patterns are accurately transferred to the YBCO film in an electron cyclotron resonance plasma etcher. Fine lines are successfully patterned down to 180 nm of the linewidth without any degradation of superconductivity, as long as a temperature rise is suppressed during plasma etching. The temperature dependence of the current-voltage characteristics can be interpreted in terms of the thermally activated vortex motion.
  • HIGH-QUALITY NB/ALOX-AL/NB JOSEPHSON-JUNCTIONS WITH GAP VOLTAGE OF 2.95-MV, M KUSUNOKI, H YAMAMORI, A FUJIMAKI, Y TAKAI, H HAYAKAWA, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 32(11A), L1609 - L1611, Nov. 1993 , Refereed
    Summary:The dependence of the gap voltage on impurities in Nb films is studied. The gap voltage is determined by the number of impurities included in the films. The impurities arise from the residual gas in the sputtering chamber before the deposition of Nb films. By reducing the impurities in the films, we obtain high-quality Nb/AlO(x)-Al/Nb Josephson junctions having the gap voltage of 2.95 mV which is close to that estimated from the energy gap of Nb bulk at 4.2 K. In addition, the use of a thin Al layer is also an important factor in obtaining excellent current-voltage characteristics.

Books etc

  • Function & Materials, Dental Application of a Flexible Apatite Sheet, Joint author,   2011 04
  • Porous Metals and Metal Foaming Technology, Addition of Advanced Biocompatibility to a Porous Artificial Root, Joint author,   2006 02

Conference Activities & Talks

  • 配向制御ハイドロキシアパタイト結晶膜の低温成長に関する検討, 常峰知也, 岡田悠希, 楠正暢, 日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM),   2016 08 29
  • Development of Objective ADL Assessment Particularly in Frail Older Adults Using a Kinect Sensor, N. Takeshima, T. Kohama, M. Kusunoki, T. Ogayu, S. Okada, E. Fujita, MM. Islam, WF. Brechue, the 9th World Congress on Active Ageing,   2016 06
  • 汎用モーションセンサーによる要介護高齢者のトレーニングでのADL基本動作の変容, FUJITA EIJI, OKADA SOICHI, KOHAMA TAKESHI, KUSUNOKI MASANOBU, HASEGAWA TAICHI, TAKESHIMA NOBUO, 体力科学,   2015 12 01
  • デイケア利用者の油圧マシントレーニングによる運動効果, OKADA SOICHI, OKADA SOICHI, OKADA SOICHI, FUJITA EIJI, KOHAMA TAKESHI, KUSUNOKI MASANOBU, NARITA MAKOTO, KATO YOSHIJI, TAKESHIMA NOBUO, TAKESHIMA NOBUO, 体力科学,   2015 12 01
  • 汎用モーションセンサによる虚弱高齢者のADL評価システム開発のための情報取得時の測定誤差に関する検討, KUSUNOKI MASANOBU, KOHAMA TAKESHI, OKADA SOICHI, FUJITA EIJI, TAKESHIMA NOBUO, 体力科学,   2015 12 01
  • 虚弱高齢者のためのADL客観的指標の作成に関する研究―その1―, TAKESHIMA NOBUO, OKADA SOICHI, OKADA SOICHI, KUSUNOKI MASANOBU, KOHAMA TAKESHI, FUJITA EIJI, HASEGAWA TAICHI, 体力科学,   2015 12 01
  • リン酸緩衝水溶液の濃度やpHが原子レベルで平坦なサファイアの表面構造に与える影響, SAITO AYAKA, TSUNEMINE TOMOYA, MAKINO TAKAYUKI, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, 日本バイオマテリアル学会大会予稿集,   2015 11 09
  • リン酸緩衝水溶液の濃度およびpHが原子レベルで平坦なAl2O3(0001)表面のテラス・ステップ構造に及ぼす影響, SAITO AYAKA, TSUNEMINE TOMOYA, MAKINO TAKAYUKI, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, 応用物理学会秋季学術講演会講演予稿集(CD-ROM),   2015 08 31
  • フッ素含有率の傾斜構造を有する耐酸性アパタイトシート, MAKINO TAKAYUKI, FUJITA NAOKI, INAGAKI TAKAYA, SAKOISHI YASUHIRO, ASANO KATSUYA, KUSUNOKI MASANOBU, 日本セラミックス協会年会講演予稿集(CD-ROM),   2015 03 06
  • 汎用モーションセンサを用いた高齢者のADL評価システムの試み, KOHAMA TAKESHI, KUSUNOKI MASANOBU, OKADA SOICHI, TAKESHIMA NOBUO, 体力科学,   2015 02 01
  • Polyetheretherketoneのセル構造体設計・3D造形と人工骨への応用, HAYAMI TAKASHI, KUSUNOKI MASANOBU, TAMURA SHOICHI, TAMURA SHOICHI, OKADA KAZUMA, OKADA KAZUMA, HIROKAWA NORIYASU, SHIBUE TADASHI, OMASA MITSUSHI, 日本設計工学会研究発表講演会講演論文集,   2015
  • PLD法によるフルオロアパタイト薄膜作製時の最適成膜条件の検討, FUJITA NAOKI, KUSUNOKI MASANOBU, 電気関係学会関西連合大会講演論文集(CD-ROM),   2014 11 11
  • c面配向ハイドロキシアパタイト薄膜の結晶性制御の検討, SAKOISHI YASUHIRO, KUSUNOKI MASANOBU, 電気関係学会関西連合大会講演論文集(CD-ROM),   2014 11 11
  • フッ化アパタイト薄膜の溶解性に対する検討, MAKINO TAKAYUKI, FUJITA NAOKI, KUSUNOKI MASANOBU, 日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM),   2014 08 25
  • フルオロアパタイト薄膜の組成制御法に関する検討, FUJITA NAOKI, MAKINO TAKAYUKI, KUSUNOKI MASANOBU, 日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM),   2014 08 25
  • 極薄非晶質リン酸カルシウムシートによる象牙質透過抑制効果の評価, HONTSU SHIGEKI, ISAI ARATA, YAMAMOTO EI, KATO NOBUHIRO, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, YASUO KENZO, YOSHIKAWA KAZUSHI, 日本セラミックス協会年会講演予稿集(CD-ROM),   2014 03 07
  • Fabrication of hydroxyapatite thin film with entirely c-plane surface, Masanobu Kusunoki, Yasuhiro Sakoishi, Katsuya Asano, Naoki Fujita, Takayuki Makino, Daisuke Okai, 26th European Conference on Biomaterials,   2014
  • 汎用モーションセンサによる反復的運動の自動計数アルゴリズムとデータ管理システムの構築, MAEDA YUTA, NAMIKAWA HIROKI, ONIZUKA MASATOSHI, HASHISHITA NAOYA, MORIMOTO YUZURU, NISHINO MAKOTO, KOHAMA TAKESHI, KUSUMOTO YOSHIKI, ATARASHI YURI, KUSUNOKI MASANOBU, 医療情報学連合大会論文集,   2013 11 20
  • PrBa2Cu3Oyバッファ層を用いた極薄YBa2Cu3Oyの作製, MIYAKE TOMOKI, ITO DAISUKE, KOTANI KATSUMI, KUSUNOKI MASANOBU, 電気関係学会関西連合大会講演論文集(CD-ROM),   2013 11 05
  • 光子検出効率向上のための高温超伝導ナノワイヤの長尺化, KOTANI KATSUMI, MIYAKE TOMOKI, KUSUNOKI MASANOBU, 電気関係学会関西連合大会講演論文集(CD-ROM),   2013 11 05
  • 水晶振動子マイクロバランスセンサ上へのc軸配向ハイドロキシアパタイト作製法の検討, SAKOISHI YASUHIRO, INOKUCHI RYO, NISHIKAWA HIROAKI, HONTSU SHIGEKI, HAYAMI TAKASHI, KUSUNOKI MASANOBU, 電気関係学会関西連合大会講演論文集(CD-ROM),   2013 11 05
  • PLD法を用いたフルオロアパタイト薄膜の作製, FUJITA NAOKI, KUSUNOKI MASANOBU, 電気関係学会関西連合大会講演論文集(CD-ROM),   2013 11 05
  • ハイドロキシアパタイト薄膜の結晶性に対する溶解性の評価, MORITA TOMOKI, FUJITA NAOKI, KUSUNOKI MASANOBU, 電気関係学会関西連合大会講演論文集(CD-ROM),   2013 11 05
  • バイオセンサに用いるためのPt電極作製法の検討, TANAKA HIDETOSHI, SAKOISHI YASUHIRO, KUSUNOKI MASANOBU, 電気関係学会関西連合大会講演論文集(CD-ROM),   2013 11 05
  • Measurement of piezoelectric properties of hydroxyapatite thin films fabricated by pulsed laser deposition method, 西垣 勉, 西川 博昭, 楠 正暢, Journal of bio-integration,   2013 09 30
  • 歯科用HAシートへのスルーホール作製法の検討, FUJITA NAOKI, MATSUDA TAIYO, MORITA TOMOKI, NISHIKAWA HIROAKI, HONTSU SHIGEKI, KUSUNOKI MASANOBU, 日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM),   2013 08 28
  • 歯科用アパタイトシートの高効率製造法に関する検討, FUJITA NAOKI, NISHIKAWA HIROAKI, HONTSU SHIGEKI, KUSUNOKI MASANOBU, 日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM),   2013 08 28
  • 象牙質―極薄アパタイトシート界面における固着特性の評価, ISAI ARATA, MATSUMOTO AKIKO, YAMAMOTO EI, KATO NOBUHIRO, NISHIKAWA AKIHIRO, KUSUNOKI MASANOBU, HONTSU SHIGEKI, YOSHIKAWA KAZUSHI, 日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM),   2013 08 28
  • エクリプス法を用いたアパタイトコート水晶振動子マイクロバランスセンサ作製法の検討, SAKOISHI YASUHIRO, FUJITA NAOKI, KUSUNOKI MASANOBU, 日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM),   2013 08 28
  • ハイドロキシアパタイトを用いた細胞アレイ作製法の検討, ASANO KATSUYA, TAMURA MASAKAZU, FUJITA NAOKI, KUSUNOKI MASANOBU, 日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM),   2013 08 28
  • Examination of enamel repairing method using ultrathin apatite sheet (Part 2), HONTSU SHIGEKI, YOSHIKAWA KAZUSHI, ISAI ARATA, YAMAMOTO EI, KATO NOBUHIRO, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HASHIMOTO YOSHIYA, YAMAMOTO KAZUYO, 日本歯科理工学会誌,   2013 03 25
  • A-17 Examination of enamel repairing method using ultrathin apatite sheet (Part2), Hontsu S, Yoshikawa K, Isai A, Yamamoto E, Kato N, Nishikawa H, Kusunoki M, Hashimoto Y, Yamamoto K, The journal of the Japanese Society for Dental Materials and Devices,   2013 03 25
    Summary:We have successfully created a flexible hydroxyapatite (HAp) sheet of less than a few micrometers, and we have been trying to establish the all-HAp restoration technique for tooth enamel. In this study, we evaluated the re-calcification layer at the various sheets (amorphous HAp, HAp, amorphous HAp/amorphous calcium phosphate: ACP, HAp/ACP)-enamel interface by scanning electron microscope (SEM).
  • Flexible Thin Film of Epitaxially Grown Perovskite Type Titanate, NISHIKAWA HIROAKI, TANAKA HIDEKAZU, ENDO TAMIO, KUSUNOKI MASANOBU, HONTSU SHIGEKI, Abstr JSAP MRS Jt Symp (CD-ROM),   2013
  • 人工骨への応用を目的としたチタンスパッタ膜の評価, OKADA KAZUMA, FUJIWARA TAKATOSHI, KUSUNOKI MASANOBU, HAYAMI TAKASHI, 日本バイオマテリアル学会シンポジウム予稿集,   2012 11 26
  • 炭酸含有アパタイトの薄膜化に関する試み, ONISHI MASAHIRO, NONAKA KURATO, KUSUNOKI MASANOBU, HAYAMI TAKASHI, HONTSU SHIGEKI, NISHIKAWA HIROAKI, 電気関係学会関西連合大会講演論文集(CD-ROM),   2012 11 26
  • パルスレーザ堆積法による薄膜作製プロセスにおける再現性向上の試み, NAKABAYASHI ISSEI, NONAKA KURATO, HARASAKI TAKAMICHI, KUSUNOKI MASANOBU, HAYAMI TAKASHI, HONTSU SHIGEKI, NISHIKAWA HIROAKI, 電気関係学会関西連合大会講演論文集(CD-ROM),   2012 11 26
  • Fabrication of very thin high-temperature-superconducting films required for high-sensitivity optics/superconductivity converters, Daisuke Ito, Katsumi Kotani, Tomoki Miyake, Hiroaki Nishikawa, Shigeki Hontsu, Masanobu Kusunoki, IEEJ Transactions on Electronics, Information and Systems,   2012 11 26
    Summary:We studied a method to obtain superconductivity even in very thin films of YBa2Cu3Oy (YBCO). These thinner YBCO films will be able to be applied to optics/superconductivity (opt/super) converters with high optical sensitivity. Opt/super converters composed of YBCO nano-bridges or nano-wires require a low critical current that is determined by the film thickness. According to X-ray diffraction, critical temperature (Tc) and residual resistivity ratio for the substrates of MgO (100), SrTiO 3 (100) and NdGaO3 (110), superconducting features are influenced by the lattice mismatching layer in YBCO closing to a hetero-epitaxy interface between YBCO and single crystal substrate. YBCO films with different thicknesses varying from 80 to 10 nm were prepared on SrTiO3, using a suitable temperature. The values of Tc slightly decreased when reducing YBCO thickness from 80 to 20 nm, and then declined sharply at less than 20 nm. It is considered that a layer in the beginning of deposition less than 20 nm causes stress in the crystal lattice. The Tc of 20 nm YBCO film on SrTiO3 was 80.8 K. It can work above liquid N2 temperature. © 2012 The Institute of Electrical Engineers of Japan.
  • 高温超伝導ナノデバイス作製のためのエッチング条件の検討, MIYAKE TOMOKI, KOTANI KATSUMI, ITO DAISUKE, NISHIKAWA HIROAKI, HONTSU SHIGEKI, KUSUNOKI MASANOBU, 電気関係学会関西連合大会講演論文集(CD-ROM),   2012 11 26
  • 単一光子検出器を目的とした高温超伝導ナノワイヤの作製, KOTANI KATSUMI, MIYAKE TOMOKI, ITO DAISUKE, NISHIKAWA HIROAKI, HONTSU SHIGEKI, KUSUNOKI MASANOBU, 電気関係学会関西連合大会講演論文集(CD-ROM),   2012 11 26
  • 神経細胞ネットワークの活動電位計測を目的とした電極アレイ埋入型培養チップ作製法の検討, NAKAJIMA HIROYUKI, YAMAWAKI NOBUYUKI, NISHIKAWA HIROAKI, HONTSU SHIGEKI, KUSUNOKI MASANOBU, 電気関係学会関西連合大会講演論文集(CD-ROM),   2012 11 26
  • 水晶振動子マイクロバランスセンサ上へのc軸配向ハイドロキシアパタイト作製法の検討, SAKOISHI YASUHIRO, INOKUCHI RYO, KUSUNOKI MASANOBU, HASHIMOTO YOSHIYA, NISHIKAWA HIROAKI, HONTSU SHIGEKI, HAYAMI TAKASHI, 電気関係学会関西連合大会講演論文集(CD-ROM),   2012 11 26
  • 医療応用を目的としたスーパーエンジニアリングプラスチックに対するチタンスパッタ膜の評価, OKADA KAZUMA, FUJIWARA TAKATOSHI, KUSUNOKI MASANOBU, HAYAMI TAKASHI, 電気関係学会関西連合大会講演論文集(CD-ROM),   2012 11 26
  • 穴あきアパタイトシートを用いたエナメル質の修復, HONTSU SHIGEKI, ISAI ARATA, YAMAMOTO EI, KATO NOBUHIRO, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HAYAMI TAKASHI, YOSHIKAWA KAZUSHI, 日本バイオマテリアル学会シンポジウム予稿集,   2012 11 26
  • バイオセンサ表面におけるハイドロキシアパタイトの配向制御法に関する検討, SAKOISHI YASUHIRO, IGUCHI RYO, KUSUNOKI MASANOBU, HASHIMOTO YOSHIYA, NISHIKAWA HIROAKI, HONTSU SHIGEKI, HAYAMI TAKASHI, 日本バイオマテリアル学会シンポジウム予稿集,   2012 11 26
  • Formation of the artificial enamel on dentin using the ultrathin apatite sheet, HONTSU SHIGEKI, YOSHIKAWA KAZUSHI, ISAI ARATA, YAMAMOTO EI, KATO NOBUHIRO, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HASHIMOTO YOSHIYA, YAMAMOTO KAZUYO, 日本歯科理工学会誌,   2012 09 25
  • B-28 Formation of the artificial enamel on dentin using the ultrathin apatite sheet, Hontsu S, Yoshikawa K, Isai A, Yamamoto E, Kato N, Nishikawa H, Kusunoki M, Hashimoto Y, Yamamoto K, The journal of the Japanese Society for Dental Materials and Devices,   2012 09 25
    Summary:We have fabricated a flexible hydroxyapatite (HAp) using a pulsed laser deposition (PLD) method and a film isolation technique. We adhered the HAp sheet to the dentine surface using a calcium phosphate aqueous in order to apply this sheet to hyperesthetic treatment. In the present study, the time dependence of the composition at the interfaces between the HAp/TCP sheet and the dentine was evaluated using X-ray diffraction measurement, and the adhesive strength between the HAp/TCP sheet and the dentine surface was evaluated by quasi-static tensile tests.
  • TCP薄膜の作製とハイドロキシアパタイトへの転化, IWAKI TOMOAKI, MARUYAMA TOSHIRO, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, HONTSU SHIGEKI, YOSHIKAWA KAZUSHI, 日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM),   2012 09 12
  • 小孔をもつフレキシブルアパタイトシートによるエナメル質の修復・保存, ISAI ARATA, MARUYAMA TOSHIRO, MATSUDA TAIYO, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, YOSHIKAWA KAZUSHI, 日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM),   2012 09 12
  • Fabrication and evaluation of bio-absorbable polymer membranes with apatite thin films, HONTSU SHIGEKI, HIGUCHI YUICHI, HASHIMOTO YOSHIYA, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, KOMASA YUTAKA, バイオインテグレーション学会誌,   2012 08 31
  • In vitro response and adhesive strength of titanium and hydroxyapatite bilayer coating on polyetereterketon (PEEK) substrate, T. Hayami, M. Kusunoki, K. Okada, T. Jinno, The 5th International Conference “Biomaterials, Tissue Engineering & Medical Devices”,   2012 08
  • Examination of enamel repairing method using ultrathin apatite sheet (Part1), HONTSU SHIGEKI, YOSHIKAWA KAZUSHI, MATSUDA TAIYO, KATO NOBUHIRO, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HASHIMOTO YOSHIYA, YAMAMOTO KAZUYO, 日本歯科理工学会誌,   2012 03 25
  • P-31 Examination of enamel repairing method using ultrathin apatite sheet(Part1), Hontsu S, Yoshikawa K, Matsuda T, Kato N, Nishikawa H, Kusunoki M, Hashimoto Y, Yamamoto K, The journal of the Japanese Society for Dental Materials and Devices,   2012 03 25
    Summary:We have succeeded to fabricate flexible hydroxyapatite (HAp) sheet for adhering directly onto tooth and bone surfaces using a pulsed laser deposition method and a film isolation technique. We have investigated a method to regenerate the tooth enamel by just attaching the flexible HAp sheet onto the tooth surface with artificial saliva. In this paper, we report the result of adhering the HAp sheet to the enamel assisted by an TCP over-deposition and calcium phosphate aqueous solution in order to reduce the period required to regenerate the enamel.
  • ハイドロキシアパタイト/α‐TCP複合シートを用いたエナメル質再生法の検討, HONTSU SHIGEKI, YOSHIKAWA KAZUSHI, MATSUDA TAIYO, KUSUNOKI MASANOBU, MARUYAMA TOSHIRO, YAMAMOTO EI, KATO NOBUHIRO, NISHIKAWA HIROAKI, 日本セラミックス協会年会講演予稿集,   2012 03 19
  • Investigation of very thin YBa2Cu3Oy film for the optics / superconductivity converters, D. Itoh, K. Kotani, T.Miyake, H. Nihiskawa, S. Hontsu, M. Kusunoki, International Symposium on Superconductivity (ISS'12),   2012
  • Investigation of etching process parameters on HTS nano-devices, T.Miyake, K. Kotani, D. Itoh, H. Nihiskawa, S. Hontsu, M. Kusunoki, International Symposium on Superconductivity (ISS'12),   2012
  • Fabrication of superconducting nano-wire using YBa2Cu3Oy, K. Kotani, T.Miyake, D. Itoh, H. Nihiskawa, S. Hontsu, M. Kusunoki, International Symposium on Superconductivity (ISS'12),   2012
  • Crystallization Control of Hydroxyapatite Sheet, M. Kusunoki, T. Matsuda, N. Fujita, Y. Sakoishi, R. Iguchi, S. Hontsu, H. Nishikawa, T. Hayami, The 5th International Conference “Biomaterials, Tissue Engineering & Medical Devices”,   2012
  • Application of the flexibile hydroxyapatite sheet to artifical enamel, S. Hontsu, N. Katou, E. Yamamoto, M. Kusunoki, H. Nishikawa, T. Hayami, K. Yoshikawa, 9th World Biomaterial Congress,   2012
  • Adhesive Strength Between Flexible Hydroxyapataite Sheet and Tooth Enamel, E. Yamamoto, N. Kato, H. Nishikawa, M. Kusunoki, T. Hayami, S. Hontsu, 24th Symposium and Annual Meeting of International Society of Ceramics in Medcine (Bioceramics 24),   2012
  • Control of Ca/P ratio of hydroxyapatite thin film by pulsed laser deposition, H. Nishikawa, R. Yoshikawa, H. Nakajima, M. Kusunoki, T. Hayami, S. Hontsu, 24th European Conference on Biomaterials - Annual Conference of the European Society for Biomaterials,   2011 12 01
  • パルスレーザ堆積法によるハイドロキシアパタイト薄膜のCa/P比制御が結晶性におよぼす影響, YOSHIKAWA RYOTA, NAKAJIMA HIROYUKI, KUSUNOKI MASANOBU, HAYAMI TAKASHI, HONTSU SHIGEKI, NISHIKAWA HIROAKI, 日本バイオマテリアル学会大会予稿集,   2011 11 21
  • フレキシブル極薄フッ素化アパタイトシートの作製, HONTSU SHIGEKI, MARUYAMA TOSHIRO, KATO NOBUHIRO, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HAYAMI TAKASHI, HASHIMOTO YOSHIYA, 日本バイオマテリアル学会大会予稿集,   2011 11 21
  • アパタイトシートの高効率作製ステムの開発, MATSUDA TAIYO, INOKUCHI RYO, NISHIKAWA HIROAKI, HAYAMI TAKASHI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 電気関係学会関西連合大会講演論文集(CD-ROM),   2011 10 17
  • LaFeO3/SrTiO3及びLaCrO3/SrTiO3ヘテロ接合界面の電気特性, ITANI AKIYA, KAWAGUCHI TADAO, KAWAYAMA IWAO, KANKI TERUO, KUSUNOKI MASANOBU, HONTSU SHIGEKI, TANAKA HIDEKAZU, TONOUCHI MASAYOSHI, NISHIKAWA HIROAKI, 電気関係学会関西連合大会講演論文集(CD-ROM),   2011 10 17
  • エピタキシャル成長したフレキシブル機能性酸化物薄膜の作製, MORITA YUSUKE, KUSUNOKI MASANOBU, HONTSU SHIGEKI, NISHIKAWA HIROAKI, 電気関係学会関西連合大会講演論文集(CD-ROM),   2011 10 17
  • パルスレーザ堆積法によるハイドロキシアパタイト薄膜の化学組成および結晶性制御, YOSHIKAWA RYOTA, NAKAJIMA HIROYUKI, KUSUNOKI MASANOBU, HAYAMI TAKASHI, HONTSU SHIGEKI, NISHIKAWA HIROAKI, 電気関係学会関西連合大会講演論文集(CD-ROM),   2011 10 17
  • 光/超伝導変換デバイスの感度向上を目的とした極薄酸化物超伝導膜の作製, ITO DAISUKE, MIYAKE TOMOKI, KOTANI KATSUMI, TAKAHASHI SHIN'YA, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 電気関係学会関西連合大会講演論文集(CD-ROM),   2011 10 17
  • 神経の活動電位計測を目的とした3次元神経ネットワーク作製法の検討, NAKAJIMA HIROYUKI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 電気関係学会関西連合大会講演論文集(CD-ROM),   2011 10 17
  • アパタイトシートの自己組織化によるエナメル質の再生, HONTSU SHIGEKI, KATO NOBUHIRO, YAMAMOTO EI, MARUYAMA TOSHIRO, MATSUDA TAIYO, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HAYAMI TAKASHI, YOSHIKAWA KAZUSHI, YAMAMOTO KAZUYO, 日本セラミックス協会秋季シンポジウム講演予稿集,   2011 09 07
  • LaFeO3/SrTiO3-δの電気・磁気特性, ITANI FUMIYA, KAWAYAMA IWAO, KANKI TERUO, KUSUNOKI MASANOBU, HONTSU SHIGEKI, TANAKA HIDEKAZU, TONOUCHI MASAYOSHI, NISHIKAWA HIROAKI, 応用物理学会学術講演会講演予稿集(CD-ROM),   2011 08 16
  • エピタキシャル成長した機能性酸化物薄膜を用いたフレキシブルデバイス, MORITA YUSUKE, KUSUNOKI MASANOBU, HONTSU SHIGEKI, NISHIKAWA HIROAKI, 応用物理学会学術講演会講演予稿集(CD-ROM),   2011 08 16
  • パルスレーザ堆積法におけるレーザ強度・レーザ照射面積がハイドロキシアパタイト薄膜の化学組成に及ぼす影響, YOSHIKAWA RYOTA, NAKAJIMA HIROYUKI, KUSUNOKI MASANOBU, HAYAMI TAKASHI, HONTSU SHIGEKI, NISHIKAWA HIROAKI, 応用物理学会学術講演会講演予稿集(CD-ROM),   2011 08 16
  • パルスレーザ堆積法を用いたハイドロキシアパタイト薄膜のCa/P比制御, YOSHIKAWA RYOTA, NAKAJIMA HIROYUKI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HAYAMI TAKASHI, HONTSU SHIGEKI, 応用物理学関係連合講演会講演予稿集(CD-ROM),   2011 03 09
  • Regeneration of tooth enamel by flexible hydroxyapatite shee, S. Hontsu, N. Katou, E. Yamamoto, H. Nishikawa, M. Kusunoki, T. Hayami, K. Yoshikawa, 23rd Symposium and Annual Meetin of International Society for Ceramics in Medicine (Bioceramics 23),   2011
  • Fabrication of Fluoridated Hydroxyapatite Thin Film and Sheet by Pulsed Laser Deposition Technique, S. Hontsu, N. Katou, H. Nishikawa, M. Kusunoki, T. Hayami, Y. Hashimoto, 11th Asian Bio Ceramics Symposium,   2011
  • Fabrication of Flexible Fluoridated Hydroxyapatite Sheet by Pulsed Laser Deposition Technique, S. Hontsu, H. Nishikawa, M. Kusunoki, T. Hayami, Y. Hashimoto, The 3rd Asian Biomaterials Congress,   2011
  • アパタイト薄膜コーティング生体吸収性高分子不織布シートの作製とin‐vitro評価, KAWAKAMI YOSHIAKI, NAKAJIMA HIROYUKI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HASHIMOTO YOSHIYA, HONTSU SHIGEKI, 日本バイオマテリアル学会大会予稿集,   2010 11 29
  • ハイドロキシアパタイトシートの結晶性に関する検討, MATSUDA TAIYO, KAWAKAMI YOSHIAKI, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 日本バイオマテリアル学会大会予稿集,   2010 11 29
  • ハイドロキシアパタイト薄膜のパルスレーザ堆積法による化学組成・結晶性制御の試み, YOSHIKAWA RYOTA, NAKAJIMA HIROYUKI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HAYAMI TAKASHI, HONTSU SHIGEKI, 日本バイオマテリアル学会大会予稿集,   2010 11 29
  • ハイドロキシアパタイト/酸化亜鉛積層構造を用いたバイオセンサの開発, OKITA AKIHIRO, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HAYAMI TAKASHI, HONTSU SHIGEKI, 日本バイオマテリアル学会大会予稿集,   2010 11 29
  • 3次元神経ネットワーク形成を目的とした細培養足場作成の検討, NAKAJIMA HIROYUKI, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 日本バイオマテリアル学会大会予稿集,   2010 11 29
  • フレキシブルアパタイトシートを用いたエナメル質の修復・保存, HONTSU SHIGEKI, KAWAKAMI YOSHIAKI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, YOSHIKAWA KAZUSHI, YAMAMOTO KAZUYO, 日本バイオマテリアル学会大会予稿集,   2010 11 29
  • 神経の活動電位計測を目的とした3次元神経ネットワーク作製法の検討, NAKAJIMA HIROYUKI, MIZOKOSHI MASATO, KANDA HIROTAKA, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 電気関係学会関西連合大会講演論文集(CD-ROM),   2010 10 28
  • 酸化物超伝導薄膜のダメージレスナノプロセスに用いるエピタキシャル成長阻害層の検討, TAKAHASHI SHIN'YA, ITO DAISUKE, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 電気関係学会関西連合大会講演論文集(CD-ROM),   2010 10 28
  • パルスレーザーデポジション法によるアパタイトシートの作製と大面積化の検討, KAWAKAMI YOSHIAKI, MATSUDA TAIYO, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, HAYAMI TAKASHI, HONTSU SHIGEKI, 電気関係学会関西連合大会講演論文集(CD-ROM),   2010 10 28
  • 酸化物超伝導薄膜のダメージレスナノ加工プロセスの検討, TAKAHASHI SHIN'YA, BABA YASUHITO, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 電気関係学会関西連合大会講演論文集(CD-ROM),   2010 10 28
  • Mg含有アパタイト薄膜の作製とその生体親和性評価, NISHIKAWA HIROAKI, SHINOHARA YU, HASHIMOTO YOSHIYA, KUSUNOKI MASANOBU, HAYAMI TAKASHI, HONTSU SHIGEKI, 応用物理学会学術講演会講演予稿集(CD-ROM),   2010 08 30
  • パルスレーザー堆積法で成膜した疑似体液由来ハイドロキシアパタイト薄膜の生体親和性評価, TSUTATANI AKARI, MATSUMURA KAZUAKI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, HAYAMI TAKASHI, 日本セラミックス協会年会講演予稿集,   2010 03 22
  • The restoration and Conservation of dental enamel using the flexible apatite sheet, S. Hontsu, K. Yoshikawa, N. Katou, T. Hayami, H. Nishikawa, M. Kusunoki, K. Yamamoto, 5th International Symposium on Apatites and Correlative Biomaterials,   2010
  • Scratch Test of Simulated Body Fluid-derived Hydroxyapatite Film on Biomedical Titanium Substrates, T. Hayami, H. Nishikawa, M. Kusunoki, K. Matsumura, S. Hontsu, M. Ohmasa, T. Sawai, International Congress on Ceramics,   2010
  • Deposition of hydroxyapatite thin films on titanium substrates and assessment of interfacial adhesion using a scratch test, T. Hayami, H. Nishikawa, M. Kusunoki, K. Matsumura, S. Hontsu, N. Hirokawa, T. Shibue, International Conference on Ceramic Processing Science,   2010
  • Composite coating of hydroxyapatite for rapid and durable bone fixation of dental implant, T. Hayami, H. Nishikawa, M. Kusunoki, Y. Higuchi, Y. Hashimoto, S. Hontsu, The 23rd European Conference on Biomaterials,   2010
  • Mg含有アパタイト薄膜の生体親和性評価, SHINOHARA YU, TSUTATANI AKARI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 日本バイオマテリアル学会大会予稿集,   2009 11 16
  • 大面積アパタイトシートの作製法の開発, KAWAKAMI YOSHIAKI, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 日本バイオマテリアル学会大会予稿集,   2009 11 16
  • 酸化物超伝導薄膜のダメージレスナノ加工プロセスの検討, BABA YASUHITO, TAKAHASHI SHIN'YA, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 電気関係学会関西支部連合大会講演論文集(CD-ROM),   2009 10 28
  • PTFEを用いた選択的細胞吸着パターン作製技術の検討, MUSHIBE KEIGO, TOGO HIDETAKA, WADA TAKUJI, KUSUNOKI MASANOBU, HASHIMOTO NORIYA, NISHIKAWA HIROAKI, MOTOTSU SHIGEKI, 電気関係学会関西支部連合大会講演論文集(CD-ROM),   2009 10 28
  • レーザーアブレーション法によって作製されたナノスケールハイロドキシアパタイト被覆チタン不織布の生体適合性, HONTSU SHIGEKI, HASHIMOTO YOSHIYA, AMETANI AKIHIRO, YOSHINO KAZUTAKA, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HAYAMI TAKASHI, KUBOKI YOSHINORI, 日本セラミックス協会秋季シンポジウム講演予稿集,   2009 09 16
  • Preparation of Carbonate Apatite thin films and Evaluation of its Biocompatibility, Shigeki Hontsu, Hiroaki Nishikawa, Naoki Taninaka, Masanobu Kusunoki, Yoshiya Hashimoto, Y. Higuchi, ICMAT 2009 & IUMRS-ICA 2009 (International Conference on Materials for Advanced Technologies 2009 & Intnational Union of Material Resarch Societies - International Conference in Asia 2009),   2009
  • PTFE上への神経細胞パターン作製技術の検討, TOGO HIDETAKA, WADA TAKUTO, KUSUNOKI MASANOBU, HASHIMOTO YOSHIYA, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 日本バイオマテリアル学会シンポジウム予稿集,   2008 11 17
  • PTFE基板上への血管内皮細胞の選択的吸着に関する検討, WADA TAKUTO, TOGO HIDETAKA, KUSUNOKI MASANOBU, HASHIMOTO YOSHIYA, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 日本バイオマテリアル学会シンポジウム予稿集,   2008 11 17
  • アパタイトコーティング三次元培養足場の作製と評価, ASANO HIROKI, TOGO HIDETAKA, HAMAHATA AKARI, HAMAHATA AKARI, YOSHINO KAZUTAKA, AMETANI AKIHIRO, KUBOKI YOSHINORI, HASHIMOTO YOSHIYA, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 日本バイオマテリアル学会シンポジウム予稿集,   2008 11 17
  • レーザーアブレーション法によるMg含有アパタイト薄膜の作製と評価, SHINOHARA YU, NISHIKAWA HIROAKI, HASHIMOTO YOSHIYA, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 日本バイオマテリアル学会シンポジウム予稿集,   2008 11 17
  • 生体アパタイトシートの作製とその生体親和性評価, TANINAKA NAOKI, TANINAKA NAOKI, TOGO HIDETAKA, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 日本バイオマテリアル学会シンポジウム予稿集,   2008 11 17
  • バクテリオロドプシンを用いた輪郭検出型光センサの開発に関する基礎研究, KAGEYAMA SUGURU, NAKAGAWA YUSUKE, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 電気関係学会関西支部連合大会講演論文集(CD-ROM),   2008 10 29
  • アパタイトコートQCMバイオセンサの高品質化に関する検討, HINAKO FUMIYO, KUSUNOKI MASANOBU, HASHIMOTO YOSHIYA, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 電気関係学会関西支部連合大会講演論文集(CD-ROM),   2008 10 29
  • 高温超伝導ナノブリッジの作製と光応答特性, BABA YASUHITO, OTA SHINSUKE, OTA SHINSUKE, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, HONTSU SHIGEKI, DODA YASUSHI, KAWAYAMA ITSUKI, MURAKAMI HIRONARI, TONOUCHI MASAYOSHI, FUJIMAKI AKIRA, 電気関係学会関西支部連合大会講演論文集(CD-ROM),   2008 10 29
  • 人工歯根表面の細胞挙動シミュレーションを目的としたフォトリソグラフィーによるアパタイトマイクロウェルの作製, WADA TAKUSHI, TOGO HIDETAKA, KUSUNOKI MASANOBU, HASHIMOTO YOSHIYA, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 電気関係学会関西支部連合大会講演論文集(CD-ROM),   2008 10 29
  • PTFEを用いた細胞パターン作製技術の検討, TOGO HIDETAKA, WADA TAKUSHI, KUSUNOKI MASANOBU, HASHIMOTO YOSHIYA, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 電気関係学会関西支部連合大会講演論文集(CD-ROM),   2008 10 29
  • コランダム酸化物薄膜結晶の原子レベル層状成長制御に関する試み, HORAITANI NAOTAKA, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 日本セラミックス協会秋季シンポジウム講演予稿集,   2008 09 17
  • 高温超伝導ナノブリッジの特性に対する再成膜プロセスの効果, KAJINO KENMEI, KIMURA TAISHI, HORII YUKI, KUSUNOKI MASANOBU, KAWAYAMA IWAO, INOUE MASUMI, TONOUCHI MASAYOSHI, FUJIMAKI AKIRA, 応用物理学関係連合講演会講演予稿集,   2008 03 27
  • Fabrication of HAp/ZnO bilayer for protein sensitive field effect transistor, Hiroaki Nishikawa, Masanobu Kusunoki, Shigeki Hontsu, 2008 MRS Fall Meeting,   2008
  • 地域在住虚弱高齢者の健康と機能的自立維持を目指すための運動方法に関する研究―能動的運動と受動的運動による筋力,筋パワーへの効果について―, RI SEIKICHIKICHI, WATANABE MOTOO, KOIZUMI DAISUKE, HASEGAWA RYUICHI, YAMADA TOMOMI, TAKESHIMA NOBUO, KUSUNOKI MASANOBU, 体力科学,   2007 12 01
  • GBR応用のための生体内吸収性アパタイト薄膜/高分子シート複合材料の作製とその生体親和性評価, ASANO HIROKI, TOGO HIDETAKA, HASHIMOTO YOSHIYA, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 日本バイオマテリアル学会大会予稿集,   2007 11 26
  • 炭酸含有アパタイト薄膜の作製とその生体親和性評価, TANA SOKI, TANA SOKI, NISHIKAWA HIROAKI, HASHIMOTO YOSHIYA, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 日本バイオマテリアル学会大会予稿集,   2007 11 26
  • アパタイトチューブおよびアパタイトシースステントの開発, HONTSU SHIGEKI, ASANO HIROKI, TOGO HIDETAKA, NISHIKAWA HIROAKI, HASHIMOTO YOSHIYA, KUSUNOKI MASANOBU, 日本バイオマテリアル学会大会予稿集,   2007 11 26
  • アパタイトコートQCM振動子を用いた歯科用シミュレータの開発, KUSUNOKI MASANOBU, HASHIMOTO YOSHIYA, GODA SHOTARO, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 日本バイオマテリアル学会大会予稿集,   2007 11 26
  • バクテリオロドプシンを用いた輪郭検出型光センサの開発に関する基礎研究, NAKAGAWA YUSUKE, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 電気関係学会関西支部連合大会講演論文集(CD-ROM),   2007 11 07
  • 高温超伝導ナノブリッジの作製と光応答特性, OTA SHINSUKE, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, HONTSU SHIGEKI, DODA YASUSHI, KAWAYAMA IWAO, MURAKAMI HIRONARI, TONOUCHI MASAYOSHI, FUJIMAKI AKIRA, 電気関係学会関西支部連合大会講演論文集(CD-ROM),   2007 11 07
  • QCM法によるアモルファスアパタイト薄膜の生体関連分子吸着特性の評価, AIDA SHOTARO, HINAKO FUMIYO, IMAI HARUKA, KUSUNOKI MASANOBU, HASHIMOTO YOSHIYA, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 電気関係学会関西支部連合大会講演論文集(CD-ROM),   2007 11 07
  • ハイドロキシアパタイトを用いた神経細胞回路形成技術の検討, TOGO HIDETAKA, KUSUNOKI MASANOBU, HASHIMOTO YOSHIYA, NISHIKAWA HIROAKI, MOTOTSU SHIGEKI, 電気関係学会関西支部連合大会講演論文集(CD-ROM),   2007 11 07
  • 人工歯根表面の細胞挙動シミュレーションを目的としたフォトリソグラフィーによるアパタイトマイクロウェルの作製, WADA TAKUSHI, TOGO HIDETAKA, KUSUNOKI MASANOBU, HASHIMOTO YOSHIYA, NISHIKAWA HIROAKI, MOTOTSU SHIGEKI, 電気関係学会関西支部連合大会講演論文集(CD-ROM),   2007 11 07
  • 1021 Imparting biocompatibility to the porous implant by apatite ultra-thin film, Hayami Takashi, Nishikawa Hiroaki, Shibue Tadashi, Kusunoki Masanobu, Hontsu Shigeki, Yamamoto Masao, 年次大会講演論文集 : JSME annual meeting,   2007 09 07
    Summary:To improve osteoblasts attachment to a porous implant such as artificial tooth root, plasma spray coating of hydroxyapatite (HA) has been attempted applying. However, plasma sprayed HA powders plugged up a way in holes of the porous structure which is important way of bone growth. To solve this problem, in this experiment, HA thin film 300nm thick was deposited by pulsed laser deposition (PLD) technique on the tooth root. HA thin film was reached easily to the depth of the porous structure. In 3 weeks after operation, the bone in-growth speed in HA-deposited tooth root was increased as compared with non HA-deposited one. In 5 weeks after operation, no particular difference between HA-deposited and non HA-deposited tooth roots was found. HA thin film deposition on a porous implant was effective in the improvement of osteoblast attachment.
  • Imparting biocompatibility to the porous implant by apatite ultra-thin film, HAYAMI TAKASHI, NISHIKAWA HIROAKI, SHIBUE TADASHI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, YAMAMOTO MASAO, 日本機械学会年次大会講演論文集,   2007 09 07
  • Naドープハイドロキシアパタイト薄膜の化学センサ応用, HONMA HISAYUKI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 応用物理学会学術講演会講演予稿集,   2007 09 04
  • 表面に規則的マイクロピラーを持つハイドロキシアパタイトシートの作製, ASANO HIROKI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 応用物理学会学術講演会講演予稿集,   2007 09 04
  • c軸配向ハイドロキシアパタイト薄膜の電気特性, NISHIKAWA HIROAKI, HONMA HISAYUKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 応用物理学会学術講演会講演予稿集,   2007 09 04
  • SFQ/光インターフェイス用YBCOナノブリッジの特性, INOUE MASUMI, SUGIMOTO MANABU, KAJINO KENMEI, FUJIMAKI AKIRA, KUSUNOKI MASANOBU, 応用物理学会学術講演会講演予稿集,   2007 09 04
  • SFQ/光インターフェイス技術のためのYBCOナノブリッジの作製, KAJINO AKIRA, KAJINO AKIRA, SUGIMOTO MANABU, INOUE MASUMI, FUJIMAKI AKIRA, KUSUNOKI MASANOBU, 応用物理学関係連合講演会講演予稿集,   2007 03 27
  • 表面に規則的なマイクロ貫通孔を持ったハイドロキシアパタイトシートの作製, NISHIKAWA HIROAKI, OKUMURA DAICHI, HATANAKA RYOTA, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 応用物理学関係連合講演会講演予稿集,   2007 03 27
  • ハイドロキシアパタイトとジメチルポリシロキサンを用いた選択的細胞培養足場の作製, KUSUNOKI MASANOBU, TOGO HIDETAKA, KAWABATA KIMIYO, HASHIMOTO YOSHIYA, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 応用物理学関係連合講演会講演予稿集,   2007 03 27
  • Naドープハイドロキシアパタイトのc軸配向薄膜作製およびその電気特性, HONMA HISAYUKI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 応用物理学関係連合講演会講演予稿集,   2007 03 27
  • 組織再生用生体吸収性アパタイト/有機複合メンブレンの作製と評価, HONTSU SHIGEKI, ASANO HIROKI, HASHIMOTO YOSHIYA, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HIGUCHI YUICHI, 日本口腔インプラント学会学術大会プログラム・抄録集,   2007
  • Utility of quartz crystal microbalance sensor with natural apatite composition, hashimoto, 1st Asian Biomaterials Congress,   2007
  • Optical response of high temperature superconducting nanobridge, Shinsuke Ota, Masanobu Kusunoki, Hiroaki Nishikawa, Shigeki Hontsu, Yasushi Doda, Iwao Kawayama, Hironaru Murakami, Masayoshi Tonouchi, Akira Fujimaki, 20th INTERNATIONAL SYMPOSIUM ON SUPERCONDUCTIVITY,   2007
  • Application of epitaxial hydroxyapatite thin film as a biosensor, H. Nishikawa, H. Homma, M. Kusunoki, S. Hontsu, European MRS 2007 Spring Meeting, Strasbourg, France,   2007
  • 高齢者の身体活動向上を目指した加速度計の有効性―個人データフィードバックの意義―, KOIZUMI DAISUKE, RI SEITETSU, NASU ERIKO, TAKESHIMA NOBUO, KUSUNOKI MASANOBU, 体力科学,   2006 12 01
  • 生体親和性・吸収性をもつ可撓性透明アパタイト細胞シートの作製, HONTSU SHIGEKI, HATANAKA RYOTA, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HAYAMI TAKASHI, 日本バイオマテリアル学会大会予稿集,   2006 11 27
  • ハイドロキシアパタイトを用いた選択的細胞吸着足場の作製法, KUSUNOKI MASANOBU, KAWABATA KIMIYO, HASHIMOTO YOSHIYA, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 日本バイオマテリアル学会大会予稿集,   2006 11 27
  • 可撓性透明アパタイトシート上での生細胞観察, HATANAKA RYOTA, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HASHIMOTO YOSHIYA, HONTSU SHIGEKI, 日本バイオマテリアル学会大会予稿集,   2006 11 27
  • 表面形状を制御したハイドロキシアパタイト薄膜の細胞接着・増殖, OGAWA ATSUKO, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 日本バイオマテリアル学会大会予稿集,   2006 11 27
  • QCM法による結晶化アパタイトとアモルファスアパタイトの生体関連分子吸着特性の比較, IMAI HARUKA, KUSUNOKI MASANOBU, HASHIMOTO YOSHIYA, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 日本バイオマテリアル学会大会予稿集,   2006 11 27
  • ハイドロキシアパタイトを用いた細胞センサ用足場の作製, OKUMURA DAICHI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 電気関係学会関西支部連合大会講演論文集(CD-ROM),   2006 11 15
  • QCM法によるアモルファスアパタイト薄膜の生体関連分子吸着特性の評価, IMAI HARUKA, KUSUNOKI MASANOBU, HASHIMOTO YOSHIYA, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 電気関係学会関西支部連合大会講演論文集(CD-ROM),   2006 11 15
  • SFQ/光変換のための高温超伝導ナノブリッジの作製と超伝導特性, OTA SHINSUKE, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, HONTSU SHIGEKI, KAWAYAMA ITSUKI, TONOUCHI MASAYOSHI, FUJIMAKI AKIRA, 電気関係学会関西支部連合大会講演論文集(CD-ROM),   2006 11 15
  • レーザーアブレーション法によるBi系超伝導体の両面大面積薄膜作製システムの開発, HACHITA KAZUMI, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 電気関係学会関西支部連合大会講演論文集(CD-ROM),   2006 11 15
  • ハイドロキシアパタイト細胞培養足場への微細構造の作製法, TAMIYA MASAKI, WADA TAKUSHI, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 電気関係学会関西支部連合大会講演論文集(CD-ROM),   2006 11 15
  • 透明アパタイトシート上での生細胞観察, HATANAKA RYOTA, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HASHIMOTO YOSHIYA, HONTSU SHIGEKI, 応用物理学会学術講演会講演予稿集,   2006 08 29
  • 原子レベルで平坦な基板を用いた高結晶性ハイドロキシアパタイト薄膜の作製, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 応用物理学会学術講演会講演予稿集,   2006 08 29
  • ハイドロキシアパタイトのタンパク質吸着性とバイオセンサへの応用, IMAI HARUKA, KUSUNOKI MASANOBU, HASHIMOTO NORIYA, NISHIKAWA HIROAKI, MOTOTSU SHIGEKI, 日本生体医工学会大会プログラム・論文集,   2006 05 15
  • 油圧式レジスタンストレーニングの自動計測とその評価法, UEDA RYOHEI, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, MOTOZU SHIGEKI, RI SEIKICHIKICHI, KOIZUMI DAISUKE, MASU ERIKO, TAKESHIMA NOBUO, 日本生体医工学会大会プログラム・論文集,   2006 05 15
  • 人工的な表面構造をもつ細胞培養足場の作製プロセス, TAMIYA MASAKI, OTA SHINSUKE, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 日本生体医工学会大会プログラム・論文集,   2006 05 15
  • ハイドロキシアパタイト透明シートの作製, HATANAKA RYOTA, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 応用物理学関係連合講演会講演予稿集,   2006 03 22
  • 単一磁束量子/光学変換のための高温超伝導ナノブリッジの作製, OTA SHINSUKE, HATTA KAZUMI, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, HONTSU SHIGEKI, KAWAYAMA ISAO, TONOUCHI MASAYOSHI, FUJIMAKI AKIRA, 応用物理学関係連合講演会講演予稿集,   2006 03 22
  • ハイドロキシアパタイトを用いたバイオセンサの等価回路による理論的検討, KUSUNOKI MASANOBU, NISHIOKA YUSHU, NISHIKAWA HIROAKI, HONTSU SHIGEKI, KAWAI TOMOJI, 応用物理学関係連合講演会講演予稿集,   2006 03 22
  • 規則的に形状制御されたハイドロキシアパタイト薄膜表面の細胞培養足場への応用, OGAWA ATSUKO, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 応用物理学関係連合講演会講演予稿集,   2006 03 22
  • ハイドロキシアパタイト薄膜を用いたグルコースセンサ, NISHIKAWA HIROAKI, OKUMURA DAICHI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 応用物理学関係連合講演会講演予稿集,   2006 03 22
  • ハーモニックバイオマテリアル‐界面制御型生体調和材料創製の可能性‐レーザーアブレーション法により作製した生体アパタイト薄膜の生体適合性評価, HASHIMOTO NORIYA, HIGUCHI YUICHI, KOMASA HIROSHI, OKAZAKI TEIJI, NAKAMURA MASAAKI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, MOTOZU SHIGEKI, 日本金属学会講演概要,   2006 03 21
  • 機能複合ナノスケールアパタイト被覆インプラントの骨伝導能の評価, HONTSU SHIGEKI, OHASHI YOSHIO, HIGUCHI YUICHI, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, OKAZAKI JOJI, KOMASA YUTAKA, 日本口腔インプラント学会学術大会プログラム・抄録集,   2006
  • Preparation of Hydroxyapatite Sheet with Various Shapes and its Application to Programmable Tissue Engineering Scaffold, H. Nishikawa, R.Hatanaka, M. Kusunoki, S. Hontsu, 2006 MRS Fall Meeting,   2006
  • Improvment of hydroxyapatite deposition on titanium dental implant using ArF laser ablation:effect on osteoblast biocompatibility in vitoro, Y. Hashimoto, M. Kusunoki, R. Hatanaka, K. Hamano, H. Nishikawa, Y. Hosoi, S. Hontsu, M. Nakamura, 11th International Conferrences on Modern Materials and Technologies,   2006
  • Improvement of fabrication process for HTS nano-bridges, Shinsuke Ohta a, Masanobu Kusunoki a, Hiroaki Nishikawa a, Shigeki Hontsu a, Iwao Kawayama b, Masayoshi Tonouchi b, Akira Fujimaki c, Nano-Virtual-Labs Joint Workshop on Superconductivity (NVLS2005),   2006
  • HTS nano-bridges for SFQ-optics converter, M.Kusunoki, S. Ohta, H. Nishikawa, S. Hontsu, I. Kawayama, M. Tonouchi, A. Fujimaki, Applied Superconductivity Conference 2006,   2006
  • Application of hydroxyapatite thin film as a biosensor, H. Nishikawa, D. Okumura, M. Kusunoki, S. Hontsu, APS March Meeting 2007,   2006
  • レーザーアブレーション法により作製した生体アパタイト薄膜の骨芽細胞培養による生体親和性のin vitro評価, HATANAKA RYOTA, HASHIMOTO YOSHIYA, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HOSOI YOSHIHIKO, HAYAMI TAKASHI, HONTSU SHIGEKI, 日本バイオマテリアル学会大会予稿集,   2005 11 28
  • 規則的に形状制御されたハイドロキシアパタイト薄膜表面の細胞培養足場への応用, OGAWA ATSUKO, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 日本バイオマテリアル学会大会予稿集,   2005 11 28
  • Naドープハイドロキシアパタイトの電気的特性とバイオセンサへの応用, OKUMURA DAICHI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 日本バイオマテリアル学会大会予稿集,   2005 11 28
  • ハイドロキシアパタイト薄膜の配向性とその表面へのタンパク質吸着特性の関係, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 応用物理学会学術講演会講演予稿集,   2005 09 07
  • Cytocompatibility of natural apatite thin film deposited by laser ablation, HASHIMOTO Y, HATANAKA R, KUSUNOKI M, NISHIKAWA H, HONTSU S, NAKAMURA M, Journal of the Japanese Society for Dental Materials and Devices,   2005 09 05
  • ハイドロキシアパタイト薄膜のa/c軸配向制御, NISHIKAWA HIROAKI, KAWASHIMA MASAMI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, KAWAI TOMOJI, 応用物理学関係連合講演会講演予稿集,   2005 03 29
  • 集中定数型超伝導フィルタのメカニカルチューニング法の検討, IGUCHI KAZUTERU, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 応用物理学関係連合講演会講演予稿集,   2005 03 29
  • Naドープハイドロキシアパタイト薄膜を用いたバイオセンサの高感度化, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, OKUMURA DAICHI, KAWASHIMA MASAMI, NAKAMORI MASAYA, HONTSU SHIGEKI, KAWAI TOMOJI, 応用物理学関係連合講演会講演予稿集,   2005 03 29
  • Tunable Range of Center Frequency and Bandwidth of Superconducting Bandpass Filter with Mechanically Movable Sapphire Rods, M. Kusunoki, S. Aga, K. Iguchi, H. Nishikawa, S. Hontsu, European Conference on Applied Superconductivity(EUCAS'05),   2005
  • Fabrication of HTS nano-bridges for SFQ-optics converter, M.Kusunoki, S. Ohta, M. Tamiya, H. Nishikawa, S. Hontsu, I. Kawayama, M. Tonouchi, A. Fujimaki, Nano-Virtual-Labs Joint Workshop on Superconductivity (NVLS2005),   2005
  • Coplaner superconducting lumped elements filter with meander-line inductors and inter-digital capacitors, S. Hontsu, K. Agemura, M. Kusunoki, H. Nishikawa, K. Iguchi, International Superconductive Electronics Conference (ISEC '05),   2005
  • Biosensor Consists of Na - Doped Hydroxyapatite Thin Film, H. Nishikawa, M. Kusunoki, M.Kawashima, S. Hontsu, T.Kawai, アメリカ物理学会定例3月ミーティング2005,   2005
  • Addition of Advanced Biocompatibility to the Porous Artificial Root, H. Nishikawa, S. Hontsu, T. Hayami, M. Kusunoki, 4th International Conference on Porous Metals and Metal Foaming Technology (MetFoam2005),   2005
  • ハイドロキシアパタイト吸着層を持つQCMセンサの開発, KUSUNOKI MASANOBU, HASHIMOTO YOSHIYA, KAWASHIMA MASAMI, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 日本バイオマテリアル学会シンポジウム予稿集,   2004 11 15
  • レーザーアブレーション法によるインプラント多孔質層へのHApコーティング, KAWASHIMA MASAMI, HONTSU SHIGEKI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HATANAKA RYOTA, MORITA YUKI, MASUDA IKUHISA, HAYAMI TAKASHI, 日本バイオマテリアル学会シンポジウム予稿集,   2004 11 15
  • レーザーアブレーション法により作製した生体アパタイト薄膜のin vivo評価, HATANAKA RYOTA, KAWASHIMA MASAMI, OHASHI YOSHIO, HIGUCHI YUICHI, KOMASA YUTAKA, OKAZAKI JOJI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HAYAMI TAKASHI, 日本バイオマテリアル学会シンポジウム予稿集,   2004 11 15
  • Naドープハイドロキシアパタイト薄膜の作製とそのバイオセンサ応用, NISHIKAWA HIROAKI, NAKAMORI MASAYA, KAWASHIMA MASAMI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, KAWAI TOMOJI, 日本バイオマテリアル学会シンポジウム予稿集,   2004 11 15
  • c軸配向ハイドロキシアパタイト薄膜の作製とその表面への塩基性タンパク質優先的吸着, NISHIKAWA HIROAKI, KAWASHIMA MASAMI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, KAWAI TOMOJI, 日本バイオマテリアル学会シンポジウム予稿集,   2004 11 15
  • 集中定数型超伝導フィルタにおけるチューニング特性の独立制御, IGUCHI KAZUKI, KUSUNOKI MASANOBU, AGEMURA KAZUYUKI, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 応用物理学会学術講演会講演予稿集,   2004 09 01
  • ハイドロキシアパタイトコートQCMセンサ, KUSUNOKI MASANOBU, HASHIMOTO YOSHIYA, KAWASHIMA MASAMI, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 応用物理学会学術講演会講演予稿集,   2004 09 01
  • Naドープハイドロキシアパタイト薄膜を用いたバイオセンサ, NISHIKAWA HIROAKI, NAKAMORI MASAYA, KAWASHIMA MASAMI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, KAWAI TOMOJI, 応用物理学会学術講演会講演予稿集,   2004 09 01
  • c軸配向ハイドロキシアパタイト薄膜表面への塩基性タンパク質の優先的吸着, NISHIKAWA HIROAKI, KAWASHIMA MASAMI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, KAWAI TOMOJI, 応用物理学会学術講演会講演予稿集,   2004 09 01
  • 集中定数型超電導フィルタの作製とチューニング特性の評価, IGUCHI KAZUKI, KUSUNOKI MASANOBU, AGEMURA KAZUYUKI, NISHIKAWA HIROAKI, HONTSU SHIGEKI, 低温工学・超電導学会講演概要集,   2004 05 24
  • 集中定数型超伝導メカニカルチューナブルフィルタの作製, IGUCHI KAZUKI, AGEMURA KAZUYUKI, MINE SHIGENOBU, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 応用物理学関係連合講演会講演予稿集,   2004 03 28
  • 集中定数型超伝導バンドパスフィルタの設計とそのチューナブル特性, AGEMURA KAZUYUKI, IGUCHI KAZUKI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 応用物理学関係連合講演会講演予稿集,   2004 03 28
  • ハイドロキシアパタイトパターン上への蛋白質吸着, KUSUNOKI MASANOBU, KAWASHIMA MASAMI, NISHIKAWA HIROAKI, HONTSU SHIGEKI, MORIMOTO KOICHI, KAWAI TOMOJI, 応用物理学関係連合講演会講演予稿集,   2004 03 28
  • 静磁波によって制御された超伝導ボルテックスの挙動における温度依存性, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 応用物理学関係連合講演会講演予稿集,   2004 03 28
  • Naドープハイドロキシアパタイト薄膜を用いた化学センサ, NAKAMORI MASAYA, HONTSU SHIGEKI, KAWASHIMA MASAMI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, KAWAI TOMOJI, 応用物理学関係連合講演会講演予稿集,   2004 03 28
  • Mechanical Tuning of Superconducting Lumped Element Filter, Applied Superconductivity Conference 2004,   2004
  • Magnetoelectric properties of magnetic/ferroelectric multilayered thin film, H. Nishikawa, M. Kusunoki, M.Kawashima, S. Hontsu, T.Kawai, アメリカ物理学会定例3月ミーティング2004,   2004
  • レーザーアブレーション法により作製したアパタイト超薄膜の生体親和性評価, KAWASHIMA MASAMI, HONTSU SHIGEKI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HASHIMOTO YOSHIYA, OHASHI YOSHIO, HIGUCHI YUICHI, 日本バイオマテリアル学会大会予稿集,   2003 12 16
  • 生体アパタイト薄膜被覆カスタムメイドインプラントの作製, HONTSU SHIGEKI, KAWASHIMA MASAMI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HAYAMI TAKASHI, OHASHI YOSHIO, HIGUCHI YUICHI, OKAZAKI JOJI, KOMASA YUTAKA, 日本バイオマテリアル学会大会予稿集,   2003 12 16
  • 酸素制御ErBa2Cu3Ox膜, MUKAIDA MASASHI, HORII SHIGERU, OHAZAMA TOORU, ICHINOSE ATARU, MATSUMOTO KANAME, YOSHIDA YUTAKA, KUSUNOKI MASAAKI, SAITO ATSUSHI, OSHIMA SHIGETOSHI, 低温工学・超電導学会講演概要集,   2003 12 03
  • 3段集中定数型超電導フィルタのメカニカルチューニング特性, NISHIKAWA HIROAKI, IGUCHI KAZUKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, 低温工学・超電導学会講演概要集,   2003 12 03
  • Oxygen controlled ErBa_2Cu_3O_x films, MUKAIDA M, HORII S, OHAZAMA T, ICHINOSE A, MATSUMOTO K, YOSHIDA Y, KUSUNOKI M, SAITO A, OHSHIMA S, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2003 12 03
  • The Improvement of the Superconducting Filter Properties using the Dielectric Rod Tuning, S Ohshima, H Mikami F Aida A, Saito, M, Mnkaida M. Kusunoki, The 8th IUMRS Intemational Conference on Advanced Materials(IUMRS-ICAM2003), Japan,   2003 12 03
  • Design and examination of high-T_c superconducting duplexer, Takezawa Motonori, Aita Fumihiro, Kusunoki Masanobu, Saito Atsushi, Mukaida Masashi, Ohshima Shigetoshi, Proceedings of the Society Conference of IEICE,   2003 09 10
  • 高温超伝導体分配器の設計と評価, TAKEZAWA MOTONORI, AITA FUMIHIRO, KUSUNOKI MASANOBU, SAITO ATSUSHI, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 電子情報通信学会大会講演論文集,   2003 09 10
  • Consideration of system combining the superconducting filter, low noise amplifer and tuning, Aita F, Takezawa M, Adachi M, Mikami H, Kusunoki M, Saito A, Mukaida M, Ohshima S, Proceedings of the Society Conference of IEICE,   2003 09 10
  • 超伝導フィルタと低雑音増幅器及びチューニングを組み合わせたシステムの評価, AITA FUMIHIRO, TAKEZAWA MOTONORI, ADACHI MANATO, MIKAMI HIROSHI, KUSUNOKI MASANOBU, SAITO ATSUSHI, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 電子情報通信学会大会講演論文集,   2003 09 10
  • レーザーアブレーション法によるNaドープハイドロキシアパタイト薄膜の作製, NAKAMORI MASAYA, HONTSU SHIGEKI, KAWASHIMA MASAMI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, KAWAI TOMOJI, 応用物理学会学術講演会講演予稿集,   2003 08 30
  • レーザーアブレーション法によるクロマトグラフィー用アパタイト薄膜の作製, KAWASHIMA MASAMI, HONTSU SHIGEKI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, KAWAI TOMOJI, 応用物理学会学術講演会講演予稿集,   2003 08 30
  • 集中定数型小型超伝導バンドパスフィルタの設計, AGEMURA KAZUYUKI, IGUCHI KAZUKI, MINE SHIGENOBU, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, KAWAI TOMOJI, 応用物理学会学術講演会講演予稿集,   2003 08 30
  • Ba2NdTaO6バッファ層を用いたMgO基板上のNdBa2Cu3O7-δ薄膜の作製と評価, NOGUCHI AKIRA, KURIAN J, AMEMURA TAKASHI, IWATA NOBUYUKI, KUSUNOKI MASANOBU, TANABE KEIICHI, MORISHITA TADATAKA, YAMAMOTO HIROSHI, 応用物理学会学術講演会講演予稿集,   2003 08 30
  • 集中定数型超伝導メカニカルチューナブルフィルタの作製, IGUCHI KAZUKI, AGEMURA KAZUYUKI, MINE SHIGENOBU, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, KAWAI TOMOJI, 応用物理学会学術講演会講演予稿集,   2003 08 30
  • 強磁性体Y3Fe5O12単結晶中を伝搬する静磁波によるYBa2Cu3O7-y薄膜中のボルテックス制御, NISHIKAWA HIROAKI, TERAKAGO MASAFUMI, KUSUNOKI MASANOBU, HONTSU SHIGEKI, KAWAI TOMOJI, 応用物理学会学術講演会講演予稿集,   2003 08 30
  • Examination of dry etching technique for YBCO thin films, ADACHI Michito, NOGUCHI Takafumi, AITA Hirofumi, MIKAMI Hiroshi, SAITO Atushi, KUSUNOKI Masanobu, MUKAIDA Masashi, OHSHIMA Shigetoshi, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2003 05 21
  • Bi2Sr2Ca2Cu3O10+y線材におけるウランドープ効果のビッター法による観察, MORIAI KATSUNARI, UJIIE KENGO, YAMADA HIRONOBU, AIZAWA KEIJI, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, MARINARO D G, DOU S X, 低温工学・超電導学会講演概要集,   2003 05 21
  • r面,c面,a面サファイア基板上のYBa2Cu3Oy薄膜の作製と評価, SHIRAKAWA MASANOBU, YAMAZAKI YUYA, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 低温工学・超電導学会講演概要集,   2003 05 21
  • 高温超伝導体分配器の設計と評価, TAKEZAWA MOTONORI, TAKEDA MAKOTO, MIKAMI HIROSHI, SAITO ATSUSHI, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 低温工学・超電導学会講演概要集,   2003 05 21
  • 超伝導フィルタと低雑音増幅器を用いたシステムの評価, AITA FUMIHIRO, MIKAMI HIROSHI, TAKEDA MAKOTO, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 低温工学・超電導学会講演概要集,   2003 05 21
  • Fabrication and characterization of YBa_2Cu_3O_y thin films on r-, c-. a-Al_2O_3 sapphire substrates, SHIRAKAWA M, YAMAZAKI Y, KUSUNOKI M, MUKAIDA M, OHSHIMA S, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2003 05 21
  • MgO基板上TFA‐MOD薄膜作製用バッファ層の検討, MUKAIDA MASASHI, MIURA MASASHI, UNNO JUN'ICHI, YAMAZAKI YUYA, ARAKI TAKESHI, HIRABAYASHI IZUMI, TANABE KEIICHI, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 低温工学・超電導学会講演概要集,   2003 05 21
  • Fabrication and evaluation of ErBa_2Cu_3O_<7-δ> thin films, OHAZAMA T, YAMAZAKI Y, SHINGAI Y, MIURA M, MATSUMOTO K, YOSHIDA Y, HORII S, ICHINOSE A, KUSUNOKI M, MUKAIDA M, OSHIMA S, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2003 05 21
  • Observation of Uranium-Doping Effect in Bi_2Sr_2Ca_2Cu_3O_<10+y> Tape by means of the Bitter Technique, MORIAI Katsunari, UJIIE Kengo, YAMADA Hironobu, AIZAWA Keiji, KUSUNOKI Masanobu, MUKAIDA Masashi, OHSHIMA Shigetoshi, MARINARO D. G, DOU S. X, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2003 05 21
  • マイクロ波デバイス用高温超伝導膜の開発の現状, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, MUKAIDA MASASHI, SUNDARESAN A, TANAKA YASUTADA, ARAKI TAKESHI, HIRABAYASHI IZUMI, TANABE KEIICHI, HOCHMUTH H, 応用物理学関係連合講演会講演予稿集,   2003 03 27
  • BaF2パウダーを用いたMOD法によるYBCO薄膜作製と評価, UNNO JUN'ICHI, MIURA MASASHI, MORIAI KATSUNARI, KURODA NAOJI, KUSUNOKI MASANOBU, MUNAIDA MASASHI, OSHIMA SHIGETOSHI, 応用物理学関係連合講演会講演予稿集,   2003 03 27
  • 各種基板上でのTiO2薄膜の作製, OZAMA TOORU, YAMAZAKI YUYA, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 応用物理学関係連合講演会講演予稿集,   2003 03 27
  • ビッター法によるBi‐2212ウイスカーの磁束量子観察, OSHIMA SHIGETOSHI, MORIAI KATSUNARI, YAMADA HIRONOBU, AIZAWA KEIJI, KUSUNOKI MASANOBU, MUKAIDA MASASHI, 応用物理学関係連合講演会講演予稿集,   2003 03 27
  • MOD法に用いるMgO基板上のバッファ層の検討, MIURA MASASHI, UNNO JUN'ICHI, YAMAZAKI YUYA, ARAKI TAKESHI, HIRABAYASHI IZUMI, TANABE KEIICHI, MUKAIDA MASASHI, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学関係連合講演会講演予稿集,   2003 03 27
  • 卓越した高周波特性と無線応用への進出, MUKAIDA MASASHI, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学関係連合講演会講演予稿集,   2003 03 27
  • 空洞共振器法によるサファイア基板の誘電率の非破壊測定, OSHIMA SHIGETOSHI, WATANABE SHINOBU, KUSUNOKI MASANOBU, MUKAIDA MASASHI, 応用物理学関係連合講演会講演予稿集,   2003 03 27
  • サファイアロッドチューニング超伝導フィルタ, MIKAMI HIROSHI, KUSUNOKI MASANOBU, AIZAWA KEIJI, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 応用物理学関係連合講演会講演予稿集,   2003 03 27
  • Preparation and Characterization of NdBa2Cu307-δ / Ba2NdTa06//MgO multilayer films, A.Noguchi, J.Kurian, T.Amemura, K.Tanabe, T.Morishita, N.Iwata, H.Yamamoto, M.Kusunoki, M.Mukaida, S.Ohshima, The 8th IUMRS International Conference on Advanced Materials (IUMRS-ICAM2003), Japan,   2003
  • Orientation control of HTS films, M. Mnkaida, Y.Yamazaki, Y.Shingai, T.Ohazama, S. Horii, A. Ichinose, Y. Yoshida, K. Matsumoto, M. Kusunoki, A. Saito, S. Ohshima, The 8th IUMRS Intemational Conference on Advanced Materials (IUMRS-ICAM 2003), Japan,   2003
  • Microwave performance of double sided T1 1223 films on LSAT substrate; A possible operation of device at 90K, A Sundaresan, Y. Tanaka, A. Iyo, M.Kusunoki, S. Ohshma, 6th European conference on Applied SupercQnductivity (EUCAS'03), Italy,   2003
  • High-Tc Lnl23 films for microwave devices, M. Mnkaida, T. Ohazama, S. Horii, A. Ichinose, K. Matsumoto, Y, Yoshida M. Kusunoki, A. Saito, S. Ohshima, The 11th Japan-US Workshop on High-Tc Su perconductors, Japan,   2003
  • Error in surface resistance originated in dielectric loss of the parallel plate dielectric resonator using two modes resonators method, M. Kusunoki, H. Nishikawa, S. Hontsu, International Symposium on Superconductivity (ISS'03),   2003
  • Buffer layers for TFA-MOD YBCO films on MgO substrate, M. Mukaida, M.Miura, T.Araki, Masanobu Kusunoki.A.Saito, S. Ohshima, I. Hirabayashi, K.Tanabe, 6th European conference on Applied Superconductivity (EUCAS'03), Italy,   2003
  • Relationship between a critical current density and a surface resistance of YBCO films, OHSHIMA Shigetoshi, SHIRAKAWA Masanobu, KUSUNOKI Masanobu, MUKAIDA Masashi, YAMASAKI Horofumi, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2002 10 30
  • Crystalinity of YBa_2Cu_3O_<7-d> thin films on various buffer layers for microwave devices, MUKAIDA Masashi, YAMAZAKI Yuya, SHINGAI Yuki, UNNO Jun-ichi, KUSUNOKI Masanobu, OHSHIMA Shigetoshi, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2002 10 30
  • マイクロ波デバイス用各種バッファ層上のYBa2Cu3O7-δ薄膜の結晶性, MUKAIDA MASASHI, YAMAZAKI YUYA, SHINGAI YUKI, UNNO JUN'ICHI, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 低温工学・超電導学会講演概要集,   2002 10 30
  • 超伝導体の表面抵抗と臨界電流密度,ディペアリング電流密度の相関, OSHIMA SHIGETOSHI, KUSUNOKI MASANOBU, INADOMARU MOMOKO, MUKAIDA MASASHI, 応用物理学会学術講演会講演予稿集,   2002 09 24
  • ビッター法によるBi2223線材の磁束量子に及ぼすウランドープ効果の観察, MORIAI KATSUNARI, UJIIE KENGO, YAMADA HIRONOBU, AIZAWA KEIJI, KUSUNOKI MASAHIRO, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, MARINARO D G, DOU S X, 応用物理学会学術講演会講演予稿集,   2002 09 24
  • BaZrO3バッファ層を用いたYBa2Cu3O7‐δ薄膜の表面抵抗, YAMAZAKI YUYA, SHINGAI YUKI, MUKAIDA MASASHI, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学会学術講演会講演予稿集,   2002 09 24
  • マイクロ波応用を目指した,Tl系薄膜の開発, ASADA HIDETO, SUNDARESAN A, BADICA P, IYO AKIRA, TANAKA YASUTOMO, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学会学術講演会講演予稿集,   2002 09 24
  • C面及び傾斜C面サファイア基板を用いたCeO2バッファ層の作製と評価, SHIRAKAWA MASANOBU, UNNO JUN'ICHI, AIZAWA KEIJI, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 応用物理学会学術講演会講演予稿集,   2002 09 24
  • Growth of YBa_2Cu_3O_<7-δ> thin film on c-sapphire substrate, SHIRAKAWA Masanobu, KUSUNOKI Masanobu, MUKAIDA Masashi, OHSHIMA Shigetoshi, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2002 05 18
  • Nondestructive Measurement of Permittivity of Dielectric Substrate of Superconductive Thin Films by a Cavity Resonance Method, WATANABE Shinobu, KUSUNOKI Masanobu, MUKAIDA Masashi, OHSHIMA Shigetoshi, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2002 05 18
  • Measurement of surface resistance on small area superconductor film, KUSUNOKI Masanobu, INADOMARU Momoko, KOUSAKA Daisuke, OHSHIMA Shigetoshi, AIZAWA Keiji, MUKAIDA Masashi, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2002 05 18
  • Temperature Dependence on Vortex Distribution in YBCO Films and QMG Samples, YAMADA Hironobu, MORIAI Katsunari, KANNO Shinsuke, AIZAWA Keiji, KUSUNOKI Masanobu, MUKAIDA Masashi, OHSHIMA Shigetoshi, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2002 05 18
  • MgO基板上YBa2Cu3O7-δ薄膜成長におけるBaZrO3バッファ層作製条件の最適化, YAMAZAKI YUYA, SHINGAI YUKI, MAKINO SAYOKO, MUKAIDA MASASHI, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 低温工学・超電導学会講演概要集,   2002 05 18
  • C面サファイア基板を用いたYBa2Cu3O7-δ薄膜の作製と評価, SHIRAKAWA MASANOBU, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 低温工学・超電導学会講演概要集,   2002 05 18
  • 空洞共振器法による超伝導薄膜用誘電体基板の比誘電率の非破壊測定, WATANABE SHINOBU, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 低温工学・超電導学会講演概要集,   2002 05 18
  • Relationship between a critical current density and a surface resistance of YBCO thin films, OHSHIMA Shigetoshi, INADOMARU Momoko, KUSUNOKI Masanobu, MUKAIDA Masashi, YAMASAKI Hirofumi, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2002 05 18
  • The growth optimization of BaZrO_3 buffer layer for YBa_2Cu_3O_<7-δ> thin films on MgO substrates, YAMAZAKI Y, SHINGAI Y, MAKINO S, MUKAIDA M, KUSUNOKI M, OHSHIMA S, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2002 05 18
  • YBa2Cu3O7-δ薄膜とバッファ層間の格子整合性の効果, YAMAZAKI YUYA, MAKINO SAYOKO, SHINGAI YUKI, INADOMARU MOMOKO, KOSAKA DAISUKE, MUKAIDA MASASHI, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学関係連合講演会講演予稿集,   2002 03 27
  • 誘電体共振器法による小面積超伝導薄膜の表面抵抗測定, INADOMARU MOMOKO, KUSUNOKI MASAHIRO, OSHIMA SHIGETOSHI, AIZAWA KEIJI, MUKAIDA MASASHI, 応用物理学関係連合講演会講演予稿集,   2002 03 27
  • Relationship between the surface resistance and depairing current density of superconductors, Shigetoshi Ohshima, Masanobu Kusunoki, Momoko Inadomaru, Masashi Mukaida, Yasumoto Tanaka, Hideo Ihar, Applied Superconductivity Conference (ASC'02),   2002
  • Preparation of Tl-2212 and Tl-1223 superconductor thin films and their microwave surface resistance, A. Sundaresan, H. Asada, A. Crisan, J. C. Nie, H. Kito, A. Iyo, Y. Tanaka, M. Kusunoki, S. Ohshima, Applied Superconductivity Conference (ASC'02),   2002
  • Fabrication and characterization of a Ce02 buffer layer on c-plane and tilt-c-plane sapphire substrates, M. Shirakawa, J. Unno, K. Aizawa, M. Kusunoki, M Mukaida, S Ohshima, International Symposium on Superconductivity (ISS'02),   2002
  • Effects of Buffer-Layer Lattice Matching on the Growth of YBCO Films, Masashi Mukaida, Yuya Yamazaki, Masanobu Kusunoki, Shigetoshi Ohshima, Sayoko Makino, Fujitsu AMD, Y. Shingai, Applied Superconductivity Conference (ASC'02),   2002
  • Correlation between Vortex Distribution and Temperature in YBCO Films and YBCO-QMG Samples, Hironobu Yamada, Katsunari Moriai, Shinsuke Kanno, Keiji Aizawa, Masanobu Kusunoki, Masashi Mukaida, Shigetoshi Ohshima, Applied Superconductivity Conference (ASC'02),   2002
  • microwave properties of RE123 superconducting films improved in the homogeneity deposited by PLD method, YOSHIDA Y, SUDO K, MATSUO H, TAKAI Y, KUSUNOKI M, INADOMARU M, MUKAIDA M, OHSHIMA S, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2001 11 23
  • EFGサファイアのマイクロ波特性, INADOMARU MOMOKO, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 応用物理学会学術講演会講演予稿集,   2001 09 11
  • マイクロ波表面抵抗のマッピング技術の開発, KUSUNOKI MASANOBU, TAKANO YOSHINOBU, NAKAMURA KEN, INADOMARU MOMOKO, KOSAKA DAISUKE, NOZAKI ATSUSHI, UENO SATOSHI, ABE SHUICHI, YOKOO MASAYOSHI, LORENZ M, HOCHMUTH H, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 応用物理学会学術講演会講演予稿集,   2001 09 11
  • Investigation of Critical Current Density Measured by Third harmonic, KOUSAKA D, SATOH A, SUZUKI T, OIKAWA S, NOGUCHI T, AIZAWA K, KUSUNOKI M, MUKAIDA M, OHSHIMA S, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2001 05 16
  • Fabrication and evaluation of miniaturized superconducting patch antenna, NAKAGAWA Tomohiro, SATO Kazuaki, KUSUNOKI Masanobu, OHSHIMA Shigetoshi, MUKAIDA Masashi, CASSINESE A, BARRA M, FRAGALA I, MALANDRINO G, PERDICARO L. M. S, VAGLIO R, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2001 05 16
  • The correlation of critical current density and surface resistance of YBCO thin films, OHSHIMA Shigetoshi, OIKAWA Shinichiro, NOGUCHI Takafumi, KUSUNOKI Masanobu, MUKAIDA Masashi, YAMASAKI Hirofumi, NAKAGAWA Yoshihiko, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2001 05 16
  • Faburication and Design of 10-pole Cross-coupled Filter, TAKEDA Makoto, KUSUNOKI Masanobu, MUKAIDA Masashi, OHSHIMA Shigetoshi, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2001 05 16
  • MgO基板上YBa2Cu3O7-δの(110)面内方位用バッファー層の検討, MAKINO SAYOKO, CHIBA KAZUAKI, INADOMARU MOMOKO, KOSAKA DAISUKE, MUKAIDA MASASHI, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学関係連合講演会講演予稿集,   2001 03 28
  • YBCO薄膜に対するBaSnO3バッファー層の膜厚効果, OIKAWA SHIN'ICHIRO, NOGUCHI TAKAFUMI, OSHIMA SHIGETOSHI, MUKAIDA MASASHI, KUSUNOKI MASANOBU, 応用物理学関係連合講演会講演予稿集,   2001 03 28
  • 誘電体共振法による表面抵抗精密測定条件の検討, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 応用物理学関係連合講演会講演予稿集,   2001 03 28
  • ビッター法によるBi系単結晶及び線材の磁束量子観察, MORIAI KATSUSHIGE, KAWAI TAKASHI, KANNO SHINSUKE, SATO SHUHEI, YAMADA HIRONOBU, AIZAWA KEIJI, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, SAKAMOTO SHUSAKU, OTA AKIO, 応用物理学関係連合講演会講演予稿集,   2001 03 28
  • The correlation of critical current density and surface resistance of YBa2Cu3O7-d thin films, Shigetoshi OHSHIMA, Shinichiro Oikawa, Takafumi Noguchi, Momoko Inadomaru, Masanobu KUSUNOKI, Masashi MUKAIDA, Hirofumi Yamasaki, Yoshihiko Nakagawa, European conference on Applied Superconductivity (EUCAS '01),   2001
  • Superconducting Dual-Mode Cross-Slotted patches for Telecommunication Applications, A.Cassinese, M. Kusunoki, K. Sato, S. Ohshima, R. Vaglio, B. Mario, F. Ignazio, M. Graziella, L.M.S. Perdicaro, European conference on Applied Superconductivity (EUCAS '01),   2001
  • Scatter in loss tangent of single crystalline sapphire, M. Inadomaru, M. Kusunoki, K. Aizawa, M. Mukaida, S. Ohshima, International Symposium on Superconductivity (ISS'01),   2001
  • Observation of Vortex Distribution in YBCO QMG Samples and YBCO Thin Films, Hironobu Yamada, Katunari Moriai, Shinsuke Kanno, Keiji Aizawa, Masanobu Kusunoki, Masashi Mukaida, Shigetoshi Ohshima, International Symposium on Superconductivity (ISS'01),   2001
  • Measurement of surface resistance distribution of large area YBa2Cu3Oy thin films, M. Kusunoki, Y. Takano, K. Nakamura, M. Inadomaru, D. Kohsaka, A. Nozaki, S. Abe, M. Yokoo, M. Lorenz, H. Hochmuth, M. Mukaida, S. Ohshima, International Superconductive Electronics Conference (ISEC '01),   2001
  • Loss Tangent of Sapphire Single Crystal Prepared by Edge-defined Film-fed Growth Method, M. Inadomaru, M. Kusunoki, M. Mukaida, S. Ohshima, International Superconductive Electronics Conference (ISEC '01),   2001
  • Full Automatic Measurement of Surface Resistance with Dielectric Resonator Method using Cryocooler, D. Kosaka, M. Kusunoki, M. Inadomaru, K. Aizawa, M. Mukaida, S. Ohshima, International Symposium on Superconductivity (ISS'01),   2001
  • Evaluation of Superconducting Dual-Mode Cross-Slotted Patch Array Antenna, T. Nakagawa, K.Sato, A. Cassinese, M. Kusunoki, S. Ohshima, B. Mario, F. Ignazio, M. Graziella, L.M.S. Perdicaro, M. Mukaida, R. Vaglio, International Symposium on Superconductivity (ISS'01),   2001
  • Demonstration of Scanning Surface Resistance Measurement System for 3 inch YBa2Cu3Oy films, M. Kusunoki, Y. Takano, K. Nakamura, M. Inadomaru, D. Kosaka, A. Nozaki, S. Abe, M. Yokoo, M. Lorenz, H. Hochmuth, M. Mukaida, S. Ohshima, International Symposium on Superconductivity (ISS'01),   2001
  • Control of grain size by initial growth stage of YBCO thin films, Masashi Mukaida, S. Sato, Yoshinobu Takano, Masanobu Kusunoki, Shigetoshi Ohshima, International Symposium on Superconductivity (ISS'01),   2001
  • BaSnO3 buffer layers for YBCO films on MgO substrates, Masashi MUKAIDA, Kazuaki Chiba, Takafumi Noguchi, Daisuke Kohsaka, Masanobu KUSUNOKI, Shigetoshi OHSHIMA, International Superconductive Electronics Conference (ISEC '01),   2001
  • BaSnO3 Buffer Layers Effect on the Surface Resistance of YBa2Cu3O7-δ Films, Shigetoshi OHSHIMA, Shinichiro Oikawa, Kazuaki Chiba, Masanobu KUSUNOKI, Masashi MUKAIDA, International Superconductive Electronics Conference (ISEC '01),   2001
  • Seal-off property of a miniaturized cooling system for HTS antennas, EHATA K, SATO K, KUSUNOKI M, MUKAIDA M, OHSHIMA S, SUZUKI Y, KANAO K, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2000 10 31
  • MgO基板上YBa2Cu3O7-δ薄膜用バッファ材料の比較, CHIBA KAZUAKI, MAKINO SAYOKO, KOSAKA DAISUKE, INADOMARU MOMOKO, MUKAIDA MASASHI, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学会学術講演会講演予稿集,   2000 09 03
  • a‐軸配向YBa2Cu3O7-δ薄膜成長におけるLn2CuO4バッファ層の比較, MUKAIDA MASASHI, SUGIMOTO JUN'ICHI, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学会学術講演会講演予稿集,   2000 09 03
  • 誘導結合プラズマスパッタリング法によるC面Al2O3基板上YBCO薄膜の作製と評価, SUZUKI TOSHIYUKI, GOTO RIKIHARU, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 応用物理学会学術講演会講演予稿集,   2000 09 03
  • 酸化物高温超伝導体超格子薄膜と表面抵抗の相関, MAKINO SAYOKO, CHIBA KAZUAKI, INADOMARU MOMOKO, KOSAKA DAISUKE, MUKAIDA MASASHI, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学会学術講演会講演予稿集,   2000 09 03
  • 高温超伝導体の表面抵抗温度依存性, INADOMARU MOMOKO, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 応用物理学会学術講演会講演予稿集,   2000 09 03
  • Design of 8-pole Elliptic Function Filters using Superconducuting Thin Films, KINPARA Tomoyuki, KUSUNOKI Masanobu, MUKAIDA Masashi, OHSHIMA Shigetoshi, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2000 05 29
  • The fabrication of Surface Resistance Measurement System using Liquid Nitrogen and Surface Resistance Measurement, KOUSAKA Daisuke, INADOUMARU Momoko, KUSUNOKI Masanobu, MUKAIDA Masashi, OHSHIMA Shigetoshi, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2000 05 29
  • Surface Resistance Measurement of Wire Type Samples By Probe-Coupling Type Microstrip Line Resonator Method, OKAI Daisuke, KUSUNOKI Masanobu, MUKAIDA Masashi, OHSHIMA Shigetoshi, KISHIDA Satoru, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2000 05 29
  • The correlation of surface resistance and in-plane crystalline orientation of YBa_2Cu_3O_<7-δ> thin films, TAKANO Y, SATO S, SUZUKI T, KUSUNOKI M, M. Masashi, OHSHIMA S, YOKOO M, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2000 05 29
  • Observation of Vortices in a Y-123 Single Crystal by means of the Bitter Technique2, KANNO Shinsuke, KAWAI Takashi, SATOU Syuhei, AIZAWA Keiji, KUSUNOKI Masanobu, MUKAIDA Masashi, OHSIMA Shigetoshi, HAYASHI Nariyuki, NISHIZAKI Terukazu, KOBAYASHI Norio, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   2000 05 29
  • MgO上YBa2Cu3O7-δ薄膜用新バッファ材料の提案, CHIBA KAZUAKI, MAKINO SAYOKO, MUKAIDA MASASHI, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学関係連合講演会講演予稿集,   2000 03 28
  • YBa2Cu3O7-b薄膜の表面抵抗と結晶粒径・面内配向の相関, SATO SHUHEI, CHIBA KAZUAKI, INADOMARU MOMOKO, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, TAKANO YOSHINOBU, 応用物理学関係連合講演会講演予稿集,   2000 03 28
  • 超伝導材料における科学―YBa2Cu3O7-δ薄膜の経晶軸制御成長機構―, MUKAIDA MASASHI, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学関係連合講演会講演予稿集,   2000 03 28
  • Surface Resistance Measurement of High Temperature Superconductor With a High Degree Accuracy, Okai D, Inadomaru M, Satou S, Kusunoki M, Mukaida M, Ohshima S, Proceedings of the IEICE General Conference,   2000 03 07
  • Surface Resistance Measurement of High Temperature Superconductor With a High Degree Accuracy, Okai D, Inadomaru M, Satou S, Kusunoki M, Mukaida M, Ohshima S, Proceedings of the IEICE General Conference,   2000 03 07
  • The Phenomenalistic Examination of Temperature Dependence of a Surface Resistance of YBCO films, M. Inadomaru, D. Kousaka, T. Suzuki, M. Kusunoki, M. Mukaida, S. Ohshima, International Symposium on Superconductivity (ISS'00),   2000
  • The Effect of Lattice Matching betwen Buffer Layer and YBa2Cu3O7-d Thin Film on In-plane Alignment of C-axis Oriented Thin Films, K.Chiba, S. Makino, M. Mukaida, M. Kusunoki, S. Ohshima, Applied Superconductivity Conference (ASC'00),   2000
  • Relationship between the surface resistance and crystal orientation of YBa2Cu3O7-d thin film, S. Ohshima, M. Kusunoki, M. Mukaida, T. Suzuki, K. Chiba, M.Inadomaru, Y. Takano, Applied Superconductivity Conference (ASC'00),   2000
  • Precise surface resistance measurement of YBa2Cu3Oy films with the dielectric resonator method, H. Obara, S. Kosaka, A. Sawa, H. Yamasaki, Y. Kobayashi, T. Hashimoto, S. Ohshima, M. Kusunoki, M. Inadomaru, International Symposium on Superconductivity (ISS'00),   2000
  • Observation of vortices in the high-temperature superconductor, S. Kanno, T. Kawai, K. Aizawa, M. Kusunoki, M. Mukaida, S. Ohshima, S. Hayashi, T. Nishizaki, N. Kobayashi, International Symposium on Superconductivity (ISS'00),   2000
  • New Surface Resistance Measurement Technique of High-Temperature Superconductors Usin a Probe Coupling Microstrip Line Resonator, D. Okai, M. Kusunoki, M. Mukaida, S. Ohshima, Applied Superconductivity Conference (ASC'00),   2000
  • Miniaturized Cooling System for HTS Antenna, K. Ehata, K.Sato, M. Kusunoki, M. Mukaida, S. Ohshima, Y. Suzuki, K. Kanao, Applied Superconductivity Conference (ASC'00),   2000
  • Ln dependence in Ln2CuO4buffer layers of c-axis on-plane aligned a-axis oriented YBa2Cu3O7-d thin film growth, M. Mukaida, M. Kusunoki, S. Ohshima, International Symposium on Superconductivity (ISS'00),   2000
  • High-quality Y-Ba-Cu-O Thin Films by PLD-Ready for Market Applications, M. Lorenz, H. Hochmuth, D. Natusch, M. Kusunoki, V. L.. Svetchnikov, V. Riede, I. Stanca, G. Kastner, D. Hesse, Applied Superconductivity Conference (ASC'00),   2000
  • Design of Cross-coupled Microstrip Bandpass Filter, T. Kinpara, M. Kusunoki, M. Mukaida, S. Ohshima, International Symposium on Superconductivity (ISS'00),   2000
  • Buffer layer technology for crystalline axis control of YBa2Cu3O7-d thin films, M. Mukaida, J. Sugimoto, K. Chiba, M. Kusunoki, S. Ohshima, Applied Superconductivity Conference (ASC'00),   2000
  • Fabrication and evaluation of YBa_2Cu_3O_y thin films for microwave dvices by Inductive coupled plasma sputtering, SUZUKI T, SATO S, INADOMARU M, KUSUNOKI M, MUKAIDA M, OHSHIMA S, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   1999 11 10
  • Influence of gas pressure on growth of YBa_2Cu_3O_x thin films by double-side DC magnetoron sputtering method, OIKAWA Sinnichirou, MUKAIDA Masashi, KUSUNOKI Masanobu, OOSHIMA Shigetosi, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   1999 11 10
  • Investigation of configurations of the dielectric resonator for accurate measurement of Rs, INADOMARU Momoko, KUSUNOKI Masanobu, MUKAIDA Masashi, OHSHIMA Shigetoshi, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   1999 11 10
  • Property of the High-Tc Superconducting antenna installed in a miniaturized cooling system, EHATA K, SATO K, KUSUNOKI M, MUKAIDA M, SUZUKI Y, KANAO K, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   1999 11 10
  • Fabrication and characterization of multilayered oxide superconducting thin films prepared by a laser abration method, MAKINO S, CHIBA K, SUGIMOTO J, MUKAIDA M, KUSUNOKI M, OHSHIMA S, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   1999 11 10
  • Observation of Vortex in Bi2212 Single Crystal by means of the Bitter Technique, KAWAI Takashi, KANNO Shinsuke, SATOU Syuuhei, AIZAWA Keiji, KUSUNOKI Masanobu, MUKAIDA Masashi, OHSHIMA Shigetoshi, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   1999 11 10
  • Fabrication and characterization of all axis azimuth controled YBCO thin films with NCO buffer layers, MUKAIDA Masashi, SUGIMOTO Jun-ichi, KUSUNOKI Masanobu, OHSHIMA Shigetoshi, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   1999 11 10
  • Development of buffer material to control in-plane orientation for YBa_2Cu_30_<7-δ> thin films on MgO substrates, CHIBA Kazuaki, MAKINO Sayoko, KOUSAKA Daisuke, MUKAIDA Masashi, KUSUNOKI Masanobu, OHSHIMA Shigetoshi, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   1999 11 10
  • Observation of Vortices in a Y-123 Single Crystal by means of the Bitter Technique, KANNO Shinsuke, KAWAI Takashi, SATOU Syuhei, AIZAWA Keiji, KUSUNOKI Masanobu, MUKAIDA Masashi, OHSIMA Shigetoshi, HAYASHI Nariyuki, NISHIZAKI Terukazu, KOBAYASHI Norio, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   1999 11 10
  • YBa2Cu3O7-δ薄膜の面内配向制御におけるBaSnO3バッファ層の臨界膜厚, CHIBA KAZUAKI, KOSAKA DAISUKE, MUKAIDA MASASHI, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学会学術講演会講演予稿集,   1999 09 01
  • 誘導結合プラズマスパッタリング法により作製したYBa2Cu3Oy薄膜のマイクロ波特性の評価, SUZUKI TOSHIYUKI, SATO SHIRO, INADOMARU MOMOKO, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 応用物理学会学術講演会講演予稿集,   1999 09 01
  • Surface resistance measurement using the microstripline resonator : Examination of the loss of cavity, Okai D, Kusunoki M, Mukaida M, Ohshima S, Proceedings of the Society Conference of IEICE,   1999 08 16
  • マイクロストリップ線路共振器を用いた表面抵抗の測定“cavity損の検討”, OKAI DAISUKE, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 電子情報通信学会大会講演論文集,   1999 08 16
  • The influence of in-plane 0-45°grain boundary on microwave surface resistance of c-axis YBa2Cu3Oy films on MgO substrate (共著), M. Kusunoki, Y. Takano, M. Mukaida, S. Ohshima, PHYSICAC,   1999 08 01
    Summary:The effect of in-plane 0-45° grain boundaries on surface resistance (Rs) of c-axis YBa2Cu3Oy (YBCO) films on MgO substrates is discussed. Samples that have various densities of 45° rotated grains were prepared using a self-template technique. The Rs values at 22 GHz were measured by the dielectric resonator method using a cryocooler. The Rs systematically changed corresponding to the amount of 0-45° grain boundaries. Conspicuous feature of the films including 0-45° grain boundaries is a large residual surface resistance. The Rs of almost perfectly in-plane aligned YBCO film scaled to 10 GHz were 0.12 mΩ at 20 K and 0.67 mΩ at 77 K on the assumption of tan δ = 0, respectively.
  • Development of a cooling system for HTC antennas, SUZUKI Yuichiro, KANAO Ken-ichi, EHATA Katsuhumi, KUSUNOKI Masanobu, MUKAIDA Masashi, OHSHIMA Shigetoshi, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   1999 06 07
  • Observation of Vortex Movements in a Bi2212 Single Crystal by means of the Bitter Technique, KAWAI Takashi, KANNO Sinsuke, SATOU Syuuhei, AIZAWA Keiji, KUSUNOKI Masaaki, MUKAIDA Masashi, OHSIMA Shigeaki, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   1999 06 07
  • YBa2Cu3Oyエピタキシャル薄膜の基板格子整合性の効果, TAKANO YOSHINOBU, CHIBA KAZUAKI, MUKAIDA MASASHI, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学関係連合講演会講演予稿集,   1999 03 28
  • YBa2Cu3Ox薄膜成長に及ぼすガス圧の影響, OIKAWA SHIN'ICHIRO, TAKANO YOSHINOBU, MUKAIDA MASASHI, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学関係連合講演会講演予稿集,   1999 03 28
  • BaSnO3/MgOを用いたYBa2Cu3Ox薄膜の面内配向制御, CHIBA KAZUAKI, TAKANO YOSHINOBU, MUKAIDA MASASHI, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学関係連合講演会講演予稿集,   1999 03 28
  • ヘアピン共振器を用いた狭帯域フイルタの設計, KIMPARA TOMOYUKI, TOMIYAMA TAKAFUMI, SATO TETSUYA, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 電子情報通信学会大会講演論文集,   1999 03 08
  • Design of Narrow-Band Filters using Hairpin Resonators, Kinpara Tomoyuki, Tomiyama Takafumi, Sato Tetsuya, Kusunoki Masanobu, Mukaida Masashi, Ohshima Shigetoshi, Proceedings of the IEICE General Conference,   1999 03 08
  • surface resistance measurement using the probe-coupling type microstripline resonator : Examination of the effect of the cavity's shape on measurement accuracy, Okai D, Kusunoki M, Mukaida M, Ohshima S, Proceedings of the IEICE General Conference,   1999 03 08
  • Fabrication of a cooling system for HTS antennas, Ehata K, Kusunoki M, Mukaida M, Ohshima S, Proceedings of the IEICE General Conference,   1999 03 08
  • プローブ結合型マイクロストリップ線路共振器法による表面抵抗の測定 測定精度に与えるCavityの形状効果, OKAI DAISUKE, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 電子情報通信学会大会講演論文集,   1999 03 08
  • 高温超伝導アンテナ用小型冷却システムの試作, EHATA KATSUSHI, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 電子情報通信学会大会講演論文集,   1999 03 08
  • Optimum Configuration of the Antenna to the Dielectric Resonator to Measure the Accurate Surface of the HTS Films’’, M.Inadomaru, D. Kousaka, M. Kusunoki, M. Mukaida, S. Ohshima, International Symposium on Superconductivity (ISS'99),   1999
  • New Measurement Technique of the Suface Impedance of Superconductors Using the Probe-Coupling Type Micostripline Resonator’’, D. Okai, M. Kusunoki, M. Mukaida, S. Ohshima, ASIA PACIFIC MICROWAVE CONFERENCE (APMC'99),   1999
  • MICROWAVE SURFACE RESISTANCE OF YBa2Cu3Oy THIN FILMS PREPARED BY INDUCTIVE COUPLED PLASMA SPUTTERING’’, T. Suzuki, S. Sato, M. Kusunoki, M. Mukaida, S. Ohshima, International Symposium on Superconductivity (ISS'99),   1999
  • High temperature resistance of YBa2Cu3O7-δ films under various oxygen pressures, M. Mukaida, Shinichiro Oikawa, M. Kusunoki, S. Ohshima, International Superconductive Electronics Conference (ISEC '99),   1999
  • FABRICATION OF DOUBLE-SIDED YBa2Cu3O7-δ/BaSnO3 THINFILMS BY LASER ABLATION, K.Chiba, D. Kousaka, M. Mukaida, M. Kusunoki, S. Ohshima, International Symposium on Superconductivity (ISS'99),   1999
  • Effects of cation mixing on the growth of a-axis oriented NdBa2Cu3O7-δthin films’’, M. Mukaida, J. Sugimoto, S. Sato, M. Kusunoki, S. Ohshima, International Symposium on Superconductivity (ISS'99),   1999
  • Effect of Cavity’s Loss on the Measurement Accuracy of the Surface Resistance by Microstripline Resonatot Method’, D. Okai, M. Kusunoki, M. Mukaida, S. Ohshima, International Symposium on Superconductivity (ISS'99),   1999
  • Development of A Miniaturized Cooling System for HTS Antennas’’, K. Ehata, M, I. Ali, K.Sato, M. Kusunoki, M. Mukaida, S. Ohshima, Y. Suzuki, K. Kanno, International Symposium on Superconductivity (ISS'99),   1999
  • Design and Fabrication of Narrow-band Compact Configuration Hairpin Filters’’, S. Ohshima, T. Tomiyama, T. Kinpara, M. Kusunoki, M. Mukaida, International Superconductive Electronics Conference (ISEC '99),   1999
  • A new epitaxial BaSnO3 Buffer layer for YBaCu3O7-δthin films on MgO substrates, M. Mukaida, Y. Takano, K.Chiba, Takurou Moriya, M. Kusunoki, S. Ohshima, International Superconductive Electronics Conference (ISEC '99),   1999
  • BaSnO3バッファ層によるMgO上YBa2Cu3Ox薄膜の結晶配向制御, CHIBA KAZUAKI, TAKANO YOSHINOBU, MUKODA MASASHI, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学会東北支部学術講演会講演予稿集,   1998 12
  • CeO2バッファ層の膜厚がYBCOの表面抵抗に与える影響, SUDO TOSHIHIDE, TAKANO YOSHINOBU, KUSUNOKI MASANOBU, MUKODA MASASHI, OSHIMA SHIGETOSHI, 応用物理学会東北支部学術講演会講演予稿集,   1998 12
  • YBCO薄膜の結晶成長に与える格子整合性の効果, TAKANO YOSHINOBU, SUDO TOSHIHIDE, KUSUNOKI MASANOBU, MUKODA MASASHI, OSHIMA SHIGETOSHI, 応用物理学会東北支部学術講演会講演予稿集,   1998 12
  • A study of measurement of surface resistance using the microstripline resonator, Okai D, Tomiyama T, Kusunoki M, Mukaida M, Ohshima S, Proceedings of the Society Conference of IEICE,   1998 09 07
  • Improvement of Power Handling Capability of Superconducting Patch Antenna. Gap-Coupled Fed Patch Antenna., EHATA KATSUFUMI, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 電子情報通信学会大会講演論文集,   1998 09 07
  • Design of Cross-Coupled Hairpin Filters, Tomiyama Takafumi, Kusunoki Masanobu, Mukaida Masashi, Ohshima Shigetoshi, Proceedings of the Society Conference of IEICE,   1998 09 07
  • Microwave characteristic of YBCO/CeO2/Al2O3., SUDO TOSHIHIDE, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学会学術講演会講演予稿集,   1998 09
  • Growth and characterization of YBa2Cu3Ox thin films for microwave devices on low-dielectric-constant MgO substrates., MUKAIDA MASASHI, TAKANO YOSHINOBU, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学会学術講演会講演予稿集,   1998 09
  • Effect of substrate lattice mismatch on the crystallographic properties for microwave device., TAKANO YOSHINOBU, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 応用物理学会学術講演会講演予稿集,   1998 09
  • Fabrication of YBCO thin film having large grain by homo-epitaxy, TAKANO Yoshinobu, KUSUNOKI Masanobu, MUKAIDA Masashi, OHSHIMA Shigetoshi, 低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity,   1998 05 20
  • Fabrication and characterization of patch antenna using both-side superconducting thin film, Ehata Katsufumi, Kusunoki Masanobu, Ohshima Shigetoshi, Helmut Kinder, Proceedings of the IEICE General Conference,   1998 03 06
  • Examination of the microstripline resonator for measurement of surface resistance, Okai Daisuke, Tomiyama Takafumi, Shinkai Yoko, Kusunoki Masanobu, Ohshima Shigetoshi, Proceedings of the IEICE General Conference,   1998 03 06
  • The function of buffer layers in heteroepitaxial YBa2Cu3Ox/CeO2/Al2O3 multilayers., SUDO TOSHIHIDE, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学関係連合講演会講演予稿集,   1998 03
  • Observation of Vortex Movement in Oxide Superconductors by Means of the Bitter Pattern Technique, S. Ohshima, Akira Kamimura, M. Kusunoki, Applied Superconductivity Conference (ASC'98),   1998
  • New Measurement Technique of the Surface Resistance Rs using the Microstrip Resonator, D. Okai, T. Tomiyama, M. Kusunoki, M. Mukaida, S. Ohshima, International Symposium on Superconductivity (ISS'98),   1998
  • Microwave Surface Resistance of YBCO Thin Films on Cerium Oxide Buffer, M. Kusunoki, T. Sudo, D. Okai, M. Mukaida, S. Ohshima, Applied Superconductivity Conference (ASC'98),   1998
  • Influence of the Microstructure of a CeO2 Buffer Layer on the Superconducting Properties of YBa2Cu3Oy on Al2O3, K. D. Develos, M. Kusunoki, S. Ohshima, International Symposium on Superconductivity (ISS'98),   1998
  • Growth Manner of c-axis Oriented YBa2Cu3Oy Thin Films, M. Mukaida, M. Kusunoki, S. Ohshima, International Symposium on Superconductivity (ISS'98),   1998
  • Examination on Power Handling Capability of Superconducting Patch Antenna, K. Ehata, Mohammad. I. Ali, M. Kusunoki, S. Ohshima, Applied Superconductivity Conference (ASC'98),   1998
  • Elimination of 45 degree Grain Boundaries in LnBa2Cu30y Thin Films for Microwave Devices on MgO Substrates, M. Mukaida, Y. Takano, M. Kusunoki, S. Ohshima, International Symposium on Superconductivity (ISS'98),   1998
  • Effect of Substrate Lattice Mismatch on the Crystallographic properties of YBa2Cu3Oy Thin Films for Microwave Devices, Y. Takano, M. Mukaida, M. Kusunoki, S. Ohshima, International Symposium on Superconductivity (ISS'98),   1998
  • Design and Fabrication of Cross-coupled Microstrip Bandpath Filters, T. Tomiyama, M. Kusunoki, M. Mukaida, S. Ohshima, International Symposium on Superconductivity (ISS'98),   1998
  • 誘導コイル結合型スパッタリングによるYBCO成膜時の堆積レートと配向性の関係, TAKAHISA AYUMI, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学会東北支部学術講演会講演予稿集,   1997 12
  • YBCO/CeO2/Al2O3ヘテロエピタキシャル成長のためのCeO2バッファ層の評価, SUDO TOSHIHIDE, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, MASUMOTO HIROSHI, HIRAI TOSHIO, 応用物理学会東北支部学術講演会講演予稿集,   1997 12
  • 炭酸基を含む酸化高温超伝導体の合成, MATSUHASHI JUN, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学会東北支部学術講演会講演予稿集,   1997 12
  • 熱処理によるYBa2Cu3Oy薄膜のグレイン成長, TAKANO YOSHINOBU, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学会東北支部学術講演会講演予稿集,   1997 12
  • Investigation of induction-coil-coupled sputtering technique for large area HTS thin films., KUSUNOKI MASANOBU, TAKAKU AYUMI, OSHIMA SHIGETOSHI, 応用物理学会学術講演会講演予稿集,   1997 10
  • Examination of the microstripline resonator for measurement of the magnetic penetration depth, .LAMBDA.., OKAI DAISUKE, SHINKAI YOKO, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学会学術講演会講演予稿集,   1997 10
  • Relationship between Tc and cathode voltage in YBCO deposition using induction-coil-coupled sputtering., KUSUNOKI MASANOBU, EHATA KATSUFUMI, TAKANO YOSHINOBU, OSHIMA SHIGETOSHI, 電子情報通信学会大会講演論文集,   1997 09
  • Design and Study on Optimum Configuration of Superconducting Distributed-Element-Filters., TOMIYAMA TAKAFUMI, OKAI DAISUKE, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 電子情報通信学会大会講演論文集,   1997 09
  • Design, fabrication and characterization of patch antenna using superconducting thin film., EHATA KATSUFUMI, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 電子情報通信学会大会講演論文集,   1997 09
  • Design, fabrication and characterization of patch antenna using superconducting thin film, Ehata Katsufumi, Kusunoki Masanobu, Ohshima Shigetoshi, Proceedings of the Society Conference of IEICE,   1997 08 13
    Summary:超伝導体は常伝導金属に比べてマイクロ波領域において2ケタほど小さな表面抵抗を持つことから、超伝導を用いた高効率あるいは小型なアンテナやフィルタ、伝送線路等のマイクロ波、ミリ波デバイスの実現が期待されている。特に、今回報告するパッチアンテナにおいては、多素子化されたアレーアンテナにおいて問題となる給電線の損失を大幅に低減できるため、従来のアンテナに比べて高利得のアレーアンテナが作製できることが予想される。
  • Relationship between T_c and cathode voltage in YBCO deposition using induction-coil-coupled sputtering, Kusunoki Masanobu, Ehta Katsufumi, Takano Yoshinobu, Ohshima Shigetoshi, Proceedings of the Society Conference of IEICE,   1997 08 13
    Summary:酸化物高温超伝導材料のマイクロ波応用の発展に伴い、薄膜の大面積化が求められている。我々は、大口径かつ均一な高密度プラズマを発生させることができる誘導コイル結合型スパッタリンダ法を大面積薄膜作製法として有望視しており、これを用いてYBa_2Cu_3O_y薄膜作製条件の検討を行っている。現在までに、ある条件下ではφ50mmの基板面内での膜厚分布が5%以下であること、また誘導コイル投入電力によりTc及び結晶の配向制御が可能であることを示した。しかし、誘導コイル投入電力、カソード電圧、カソード電流はそのうち2者を決定すると残りの1者が自ずから定まるという関係にあるため、同時に2つの成膜パラメータを変化させることとなり、各々がどの様に膜質を支配しているかが明確ではなかった。今回、膜質と上記パラメータの関係について調べ、中でもTcの決定にはカソード電圧が重要であることが明らかとなったので報告する。
  • Design and Study on Optimum Configuration of Superconducting Distributed-Element-Filters, Tomiyama Takafumi, Okai Daisuke, Kusunoki Masanobu, Ohshima Shigetoshi, Proceedings of the Society Conference of IEICE,   1997 08 13
    Summary:超伝導フィルタは、高周波領域における表面抵抗が常伝導体のそれに比べ1桁以上低いため、低挿入損失、シャープカット特性等の優れた特性を有し、移動体通信の基地局用フィルタとして注目されている。現在検討されている超伝導フィルタは、分布定数型では、例えばヘアピン形、櫛形、平行結合形、コプレーナフィルタ等が多いが、高効率化のためには同じ性能でも面積の小さいフィルタを作製する方が有利である。我々は、ヘアピン、櫛形、平行結合形フィルタの形状の最適化とサイズの小型化を検討している。
  • Design, trial manufacture and evaluation of a superconducting patch antenna. (II)., EBATA KATSUFUMI, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 低温工学・超電導学会講演概要集,   1997 05 14
  • Examination on induction coil connective sputtering technique for forming oxide high-temperature superconductive thin films., KUSUNOKI MASANOBU, EBATA KATSUSHI, OKAI DAISUKE, OSHIMA SHIGETOSHI, 低温工学・超電導学会講演概要集,   1997 05 14
  • Preparation of YBa2Cu3Oy thin films using helicon plasma source., KUSUNOKI MASANOBU, OSUKA AKIRA, EHATA KATSUSHI, OKAI DAISUKE, OSHIMA SHIGETOSHI, 応用物理学関係連合講演会講演予稿集,   1997 03
  • Fabrication and characterization of superconducting patch antenna., EHATA KATSUSHI, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学関係連合講演会講演予稿集,   1997 03
  • Variations of order parameter and bias current distribution with time in thin film superconducting lines, H. Andoh, M. Kito, M. Kusunoki, A. Fujimaki, H. Hayakawa, International Superconductive Electronics Conference (ISEC '97),   1997
  • The Gain and Directivity of a Superconducting Patch Antenna, S. Ohshima, K. Ehata, M. Kusunoki, International Superconductive Electronics Conference (ISEC '97),   1997
  • Study on Optimum Configuration on Microstrip Bandpass Filters, T. Tomiyama, D. Okai, M. Kusunoki, S. Ohshima, International Symposium on Superconductivity (ISS'97),   1997
  • High-Temperature Superconducting Microwave Applications, Antenna and Filter, S. Ohshima, K. Ehata, T. Ogasawara, M. Kusunoki, International Workshop on HTS Electron Devices (HTSED '97),   1997
  • Examination of the Microstripline Resonator for Measurement of the Magnetic Penetration Depth, D. Okai, Takasi TACHIKI, Yoko SHINKAI, M. Kusunoki, S. Ohshima, International Symposium on Superconductivity (ISS'97),   1997
  • Characterization of Superconducting Patch Antenna Fabricated by Both-Side Superconducting Thin Film, K. Ehata, M. Kusunoki, S. Ohshima, H. KINDER, International Symposium on Superconductivity (ISS'97),   1997
  • Manufacture and evaluation of YBCO thin film by helicon sputtering technique., OSUGA AKIRA, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 応用物理学会東北支部学術講演会講演予稿集,   1996 12
  • Design, trial manufacturing, and evaluation of superconducting meandering antenna., OSHIMA SHIGETOSHI, OGASAWARA TAKASHI, KUSUNOKI MASANOBU, 低温工学・超電導学会講演概要集,   1996 11 06
  • Design, trial manufacturing, and evaluation of superconducting patch antenna., OSHIMA SHIGETOSHI, EBATA KATSUFUMI, OGASAWARA TAKASHI, KUSUNOKI MASANOBU, 低温工学・超電導学会講演概要集,   1996 11 06
  • Analysis on Vortex Flow Transistor composed of nanobridges., FUJIMAKI AKIRA, KUSUNOKI MASANOBU, KITO MASARU, YOSHIDA SHUJI, ANDO HIROYA, HAYAKAWA HISAO, 応用物理学関係連合講演会講演予稿集,   1996 03
  • Josephson Vortex Flow Transistor with vertically stacked structure., YOSHIDA SHUJI, KUSUNOKI MASANOBU, KITO MASARU, ANDO HIROYA, FUJIMAKI AKIRA, HAYAKAWA HISAO, 応用物理学関係連合講演会講演予稿集,   1996 03
  • New vortex flow transistors made of YBa2Cu3Oy thin films, A. Fujimaki, M. Kusunoki, M. Kito, S. Yoshida, H. Andoh, H. Hayakawa, Applied Superconductivity Conference (ASC'96),   1996
  • Josephson Vortex Flow Transistor with Small Dimensions, A.Fujimaki, S.Yoshida, M.Kito, M. Kusunoki, H.Hayakawa, International Workshop on Superconductivity,   1996
  • Design and Fabrication of Metal and Superconducting Meander-Line Antennas, T.Ogasawara, K.Ehata, M. Kusunoki, S. Ohshima, International Symposium on Superconductivity (ISS'96),   1996
  • Design and Characterization of Superconducting Patch Antenna, K. Ehata, Takashi Ogasawara, M. Kusunoki, S. Ohshima, International Symposium on Superconductivity (ISS'96),   1996
  • Flux Flow Transistor with nano structures., KUSUNOKI MASANOBU, KITO MASARU, YOSHIDA SOJI, ANDO HIROYA, FUJIMAKI AKIRA, HAYAKAWA HISAO, 応用物理学会学術講演会講演予稿集,   1995 08
  • Josephson Vortex Flow Transistor., KITO MASARU, KUSUNOKI MASANOBU, YOSHIDA SOJI, ANDO HIROYA, FUJIMAKI AKIRA, HAYAKAWA HISAO, 応用物理学会学術講演会講演予稿集,   1995 08
  • The Influence of the Control Current on Vortices in SFFT., ANDO HIROYA, KITO MASARU, KUSUNOKI MASANOBU, FUJIMAKI AKIRA, HAYAKAWA HISAO, 応用物理学関係連合講演会講演予稿集,   1995 03
  • Superconducting Transistors Composed of Nanobridges, International Workshop on Novel Terahertz Technology,   1995
  • Flux Flow Transistorにおける加工法と特性評価, 鬼頭傑, 楠正暢, 安藤浩哉, 藤巻朗, 早川尚夫, 電気関係学会東海支部連合大会講演論文集,   1994 10
  • Corrugation Flux Flow Transistor., FUJIMAKI AKIRA, KUSUNOKI MASANOBU, ANDO HIROYA, KITO MASARU, HAYAKAWA HISAO, 応用物理学会学術講演会講演予稿集,   1994 09
  • Micro-Flux-Flow-Transistor with submicron structures., KUSUNOKI MASANOBU, ANDO HIROYA, FUJIMAKI AKIRA, HAYAKAWA HISAO, 応用物理学会学術講演会講演予稿集,   1994 09
  • Numerical Calculation on Critical Current Density of the Superconducting Narrow Line., ANDO HIROYA, KUSUNOKI MASANOBU, FUJIMAKI AKIRA, HAYAKAWA HISAO, 応用物理学会学術講演会講演予稿集,   1994 09
  • Critical Current Density of Submicron Lines of Oxide Superconductors., KUSUNOKI MASANOBU, AKAIKE HIROYUKI, FUJIMAKI AKIRA, TAKAI YOSHIAKI, HAYAKAWA HISAO, 応用物理学関係連合講演会講演予稿集,   1994 03
  • Effect of surface barrier on the characteristics of Flux Flow Transistor., FUJIMAKI AKIRA, KITO MASARU, KUSUNOKI MASANOBU, ANDO HIROYA, HAYAKAWA HISAO, 応用物理学関係連合講演会講演予稿集,   1994 03
  • Superconducting Flux Flow Transistors with Submicrometer Structures, M. Kusunoki, H. Akaike, A. Fujimaki, H. Hayakawa, Applied Superconductivity Conference (ASC'94),   1994
  • Computer simulations of dynamics of vortex lines in superconducting flux flow transistors, H. Andoh, M. Kusunoki, A. Fujimaki, H. Hayakawa, Applied Superconductivity Conference (ASC'94),   1994
  • A Novel Technique for YBa2Cu3O7-x Submicrometer Structure Formation Using Focused A Novel Technique for YBa2Cu3O7-x Submicrometer Structure Formation Using Focused Ion Beam Lithograp, A. Fujimaki, M. Kusunoki, H. Hayakawa, International Workshop on HTS Electron Devices (HTSED '94),   1994
  • Improvement of superconducting characteristics of Oxide Superconductor submicron lines., 楠正暢, 赤池宏之, 藤巻朗, 高井吉明, 早川尚夫, 応用物理学会学術講演会講演予稿集,   1993 09
  • Fabrication of high quality Nb/AlOx Al/Nb junction having 3mV-gap voltage., 楠正暢, 田部章, 山森弘毅, 藤巻朗, 高井吉明, 早川尚夫, 応用物理学関係連合講演会講演予稿集,   1993 03
  • Submicron-scale Patterning and Electrical Properties of Oxide Superconductors., 楠正暢, 赤池宏之, 藤巻朗, 高井吉明, 早川尚夫, 応用物理学関係連合講演会講演予稿集,   1993 03
  • Relationship between oxidation pressure of AlOx layer and critical current dencity., 楠正暢, 山森弘毅, 藤巻朗, 高井吉明, 早川尚夫, 応用物理学会学術講演会講演予稿集,   1991 10

Works

  • Study on superconducting antenna
  • Investigation of surface resistance of large area HTS film

Misc

  • 深層学習を用いた虚弱高齢者の判定, 高木智弘, 小濱剛, 楠正暢, 岡田荘市, 藤田英二, 竹島伸生, 吉田久, 電子情報通信学会大会講演論文集(CD-ROM), 2019, ROMBUNNO.D‐12‐53,   2019 03 05 , https://jglobal.jst.go.jp/detail?JGLOBAL_ID=201902242707905467
  • Deep Neural Networkを用いた虚弱高齢者の判定, 高木智弘, 小濱剛, 楠正暢, 岡田荘市, 藤田英二, 竹島伸生, 吉田久, 電子情報通信学会大会講演論文集(CD-ROM), 2018, ROMBUNNO.D‐12‐5,   2018 03 06 , http://jglobal.jst.go.jp/public/201802256220139696
  • デイケア利用者の油圧マシントレーニングによる運動効果, 岡田壮市, 岡田壮市, 岡田壮市, 藤田英二, 小濱剛, 楠正暢, 成田誠, 加藤芳司, 竹島伸生, 竹島伸生, 体力科学, 64, 6, 730, 730,   2015 12 , http://jglobal.jst.go.jp/public/201602221160530131
  • 虚弱高齢者のためのADL客観的指標の作成に関する研究(その1), 竹島 伸生, 岡田 壮市, 楠 正暢, 小濱 剛, 藤田 英二, 長谷川 太一, 体力科学, 64, 6, 729, 729,   2015 12 , 10.7600/jspfsm.64.729, http://jglobal.jst.go.jp/public/201602205497206101
  • 汎用モーションセンサによる虚弱高齢者のADL評価システム開発のための情報取得時の測定誤差に関する検討, 楠 正暢, 小濱 剛, 岡田 壮市, 藤田 英二, 竹島 伸生, 体力科学, 64, 6, 729, 729,   2015 12 , 10.7600/jspfsm.64.729, http://jglobal.jst.go.jp/public/201602206316972882
  • 汎用モーションセンサーによる要介護高齢者のトレーニングでのADL基本動作の変容, 藤田英二, 岡田壮市, 小濱剛, 楠正暢, 長谷川太一, 竹島伸生, 体力科学, 64, 6, 735, 735,   2015 12 , http://jglobal.jst.go.jp/public/201602215797884158
  • Application of Ultrathin Amorphous Calcium Phosphate Sheet in the Curative Treatment of Dentin Hypersensitivity in vitro, S. Hontsu, A. Isai, E. Yamamoto, N. Kato, K. Yoshikawa, H. Nishikawa, M. Kusunoki, K. Yamamoto, 13th Asian BioCeramics Symposium,   2013 12
  • 汎用モーションセンサによる反復的運動の自動計数アルゴリズムとデータ管理システムの構築, MAEDA YUTA, NAMIKAWA HIROKI, ONIZUKA MASATOSHI, HASHISHITA NAOYA, MORIMOTO YUZURU, NISHINO MAKOTO, KOHAMA TAKESHI, KUSUMOTO YOSHIKI, ATARASHI YURI, KUSUNOKI MASANOBU, 医療情報学連合大会論文集, 33rd, 974, 975,   2013 11 20 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=201402253277751949
  • Formation of the artificial enamel on dentin using the ultrathin apatite sheet, N. Kato, K. Yoshikawa, A. Isai, E. Yamamoto, H. Nishikawa, M. Kusunoki, Y. Hashimoto, K. Yamamoto, S. Hontsu, The 12th Asian BioCeramics Symposium,   2012 11
  • Development of a perforated hydroxyapatite sheet and its application to the repair of tooth enamel, E. Yamamoto, A. Isai, N. Kato, H. Nishikawa, M. Kusunoki, T. Hayami, K. Yoshikawa, K. Yamamoto, S. Hontsu, The 12th Asian BioCeramics Symposium,   2012 11
  • 加速度計付歩数計を用いた身体活動量向上への取り組み―活動量と強度調節の有用性, KOIZUMI DAISUKE, SASAKI HIDEO, IRIE MIEKO, HIKOSAKA AIKO, KUSUNOKI MASANOBU, TAKESHIMA NOBUO, 医科学応用研究財団研究報告, 27, 81, 85,   2010 02 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=201002267712412681
  • ヒト間葉系幹細胞とハイドロキシアパタイトシートを組み合わせた新規骨再生誘導メンブレンの開発, HASHIMOTO NORIYA, YANAKA NAOKI, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, MOTOZU SHIGEKI, TAKEDA SHOJI, 日本再生歯科医学会誌, 7, 1, 82,   2009 12 30 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=201002251391497996
  • 極薄アパタイトシートの軟組織再生足場としての応用, ASANO HIROKI, TOGO HIDETAKA, HASHIMOTO YOSHIYA, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, HAYAMI TAKASHI, HONTSU SHIGEKI, 再生医療, 8, 260,   2009 02 05 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902204597949231
  • エキシマレーザーアブレーション法によるアパタイト被覆三次元チタン繊維細胞足場の開発, HASHIMOTO YOSHIYA, YOSHIKAWA YOSHIHIRO, ASANO HIROKI, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, HONTSU SHIGEKI, IKEO TAKASHI, AMETANI AKIHIRO, YOSHINO KAZUTAKA, KUBOKI YOSHINORI, 日本再生歯科医学会誌, 6, 1, 56,   2008 12 30 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902210575381940
  • 機能複合ナノスケールアパタイト被覆インプラントの骨伝導能の評価, HONTSU SHIGEKI, OHASHI YOSHIO, HIGUCHI HIROKAZU, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, OKAZAKI JOUSHI, KOMASA YUTAKA, 日本口腔インプラント学会誌, 20, 1, 84,   2007 03 31 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902269756272994
  • 携行型運動量計測デバイスを用いた高齢者用遠隔健康管理プラットホームの開発, KUSUNOKI MASANOBU, TAKESHIMA NOBUO, TAKAHASHI TATSUHISA, 医科学応用研究財団研究報告, 24, 49, 52,   2007 02 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902243736338949
  • Biocompatibility of implant with natural apatite ultra-thin film, HONTSU SHIGEKI, KAWASHIMA MASAMI, NISHIKAWA HIROAKI, KUSUNOKI MASANOBU, HAYAMI TAKASHI, OHASHI YOSHIO, HIGUCHI YUICHI, HASHIMOTO YOSHIYA, バイオマテリアル, 24, 5, 353, 360,   2006 10 13 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902296673768472
  • Examination of Effect on Induce to Differentiated Neuronal Cell on Hydroxyapataite Coated Material, Takehara Toshiyuki, Hatanaka Ryota, Kusunoki Masanobu, Nishikawa Hiroaki, Hashimoto Noriya, Hontsu Shigeki, Hosoi Yoshihiko, Memoirs of the School of Biology-Oriented Science and Technology of Kinki University, 18, 18, 25, 29,   2006 09 30 , http://ci.nii.ac.jp/naid/110006183414
    Summary:Recently, advance to research for regenerative medicine and transplantation medicine of recover tissue. The transplant radical material that becomes an actual work stand of transplanted cells is researched and it is developed along with it. We study the influence on the differentiation induction of the embryonic stem cell (ESC) was examined by compatibility's with the biological tissue paying attention to the hydroxyapatite in which an immune rejection did not happen high either, and using the radical material that did this in the coating. Induce by differentiation from four processes; the initial differentiation structure (embryonic body) and the neural precursor cell were differentiating induced from the Cynomolgus monkey ESC is utilized as a tool for the clinical trial. We then were compared function cell differentiation/proliferation potency on each radical material. It became the one that adhering the neuronal cell was weak, and the cell proliferation potency is low on the titanium radical material though adhering the neuronal cell was high, and the formation of the axon externals structure was observed on the collagen coated and the hydroxyapatite coated radical material. It was thought that the hydroxyapatite was able to use as an excellent work stand in the differentiation proliferation of the neuronal cell, and was able to become a useful transplant radical material from these results.
  • Biocompatibility of implant with natural apatite ultra-thin film, HONTSU Shigeki, KAWASHIMA Masami, NISHIKAWA Hiroaki, KUSUNOKI Masanobu, HAYAMI Takashi, OHASHI Yoshio, HIGUCHI Yuichi, HASHIMOTO Yoshiya, Journal of Japanese Society for Biomaterials, 24, 5, 353, 360,   2006 09 15 , http://ci.nii.ac.jp/naid/10020361645
  • レーザーアブレーション法を用いた生体アパタイト薄膜の細胞適合性評価(in vitro), HASHIMOTO YOSHINARI, HATANAKA RYOTA, KUSUNOKI MASANOBU, NISHIKAWA HIROAKI, HONTSU SHIGEKI, NAKAMURA MASAAKI, 歯科材料・器械, 24, 5, 353,   2005 09 05 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902243156221882
  • エキシマレーザーアブレージョン法を用いたハイドロキシアパタイトコートQCMセンサーの開発, HASHIMOTO YOSHINARI, KUSUNOKI MASANOBU, KAWASHIMA MASAMI, NISHIKAWA HIROAKI, HONTSU SHIGEKI, NAKAMURA MASAAKI, 歯科材料・器械, 23, 5, 328,   2004 09 10 , 10.14832/gsjsdmd.2004f.0.12.0, http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902295734754481
  • A-02 The development of quartz crystal microbalance sensor with hydroxyapatite coating using a pulsed laser depostion technique, HASHIMOTO Y, KUSUNOKI M, KAWASHIMA M, NISHIKAWA H, HONTSU S, NAKAMURA M, Journal of the Japanese Society for Dental Materials and Devices, 23, 5,   2004 09 10 , Refereed, http://ci.nii.ac.jp/naid/110002989674
  • Oxygen controlled ErBa_2Cu_3O_x films, MUKAIDA M, HORII S, OHAZAMA T, ICHINOSE A, MATSUMOTO K, YOSHIDA Y, KUSUNOKI M, SAITO A, OHSHIMA S, 69,   2003 12 03 , http://ci.nii.ac.jp/naid/10013401120
  • Crystallinity of YBa2Cu3O7-.DELTA. Thin Films on Various Buffer Layers for Microwave Devices, MUKAIDA MASASHI, YAMAZAKI YUYA, SHINGAI YUKI, KUSUNOKI MASANOBU, MATSUMOTO KANAME, YOSHIDA YUTAKA, ICHINOSE ATARU, HORII SHIGERU, SAITO ATSUSHI, 低温工学, 38, 10, 546, 553,   2003 10 25 , 10.2221/jcsj.38.546, http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902259037713100
  • Crystallinity of YBa_2Cu_3O_7-δ Thin Films on Various Buffer Layers for Microwave Devices, MUKAIDA Masashi, YAMAZAKI Yuya, SHINGAI Yuki, KUSUNOKI Masanobu, MATSUMOTO Kaname, YOSHIDA Yutaka, ICHINOSE Ataru, HORII Shigeru, SAITO Atsushi, OHSHIMA Shigetoshi, TEION KOGAKU, 38, 10, 546, 553,   2003 10 25 , 10.2221/jcsj.38.546, http://ci.nii.ac.jp/naid/10011562816
    Summary:Buffer layer materials for growing YBa2Cu3O7−δ thin films on MgO substrates are examined from the viewpoint of YBa2Cu3O7−δ thin-film crystallinity. The buffer layers were grown using an excimer laser. Crystallinity of the buffer layers grown on MgO substrates and the YBa2Cu3O7−δ thin films on the buffer layers were evaluated by X-ray diffraction, X-ray rocking curves and X-ray φ-scan methods. One of key points to obtain YBa2Cu3O7−δ thin films of the highest quality on the MgO substrates is the usage of BaZrO3 buffer layers that are lattice matched to the MgO substrates. However, every buffer layer examined here showed the result of high-quality YBa2Cu3O7−δ thin films with a Tc of around 89 K and low surface resistance.
  • Fabrication and evaluation of ErBa_2Cu_3O_<7-δ> thin films, OHAZAMA T, YAMAZAKI Y, SHINGAI Y, MIURA M, MATSUMOTO K, YOSHIDA Y, HORII S, ICHINOSE A, KUSUNOKI M, MUKAIDA M, OSHIMA S, 68,   2003 05 21 , http://ci.nii.ac.jp/naid/80015961420
  • Measurement of dielectric constant of R-, A-, C-plane sapphire substrates and fabrication of YBCO thin films on these substrates., SHIRAKAWA MASANOBU, WATANABE SHINOBU, AIZAWA KEIJI, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 電子情報通信学会技術研究報告, 103, 20(SCE2003 1-12), 1, 7,   2003 04 23 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902239021127676
  • Improvement of superconductig filter properties using dielectric rod trimming, MIKAMI HIROSHI, OSHIMA SHIGETOSHI, MUKAIDA MASASHI, KUSUNOKI MASANOBU, AIZAWA KEIJI, 電子情報通信学会技術研究報告, 103, 20(SCE2003 1-12), 29, 35,   2003 04 23 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902239292863947
  • Measurement of dielectric constant of R-,A-,C-plane sapphire substrates and fabrication of YBCO thin films on these substrates., SHIRAKAWAI Masanobu, WATANABE Shinobu, AIZAWA Keiji, KUSUNOKI Masanobu, MUKAIDA Masashi, OHSHIMA Shigetoshi, Technical report of IEICE. SCE, 103, 20, 1, 7,   2003 04 16 , http://ci.nii.ac.jp/naid/110003174261
    Summary:Sapphire substrates are expected as suitable substrates of superconducting microwave devices, however, there are few reports on anisotropic dielectric constant of the sapphire substrates. Therefore, we examine the temperature dependence of dielectric constant. This paper presents the measured results of dielectric constants of r-, a-, and c-plane sapphire substrates by the cavity resonance method. Also, we have examined the conditions of epitaxial CeO_2 films on these sapphire substrates, and also examined epitaxial growth of YBa_2Cu_3O_7-δ films were grown on these CeO_2 buffer layers.
  • Improvement of superconducting filter properties using dielectric rod trimming, mikami Hiroshi, ohshima Shigetoshi, mukaida Masashi, kusunoki Masanobu, aizawa Keiji, Technical report of IEICE. SCE, 103, 20, 29, 35,   2003 04 16 , http://ci.nii.ac.jp/naid/110003174266
    Summary:The superconductig filter properties are affected by the deviation of substrate parameters, for example thickness and the value of dielectric constant and so on. Therefore it is very difficult to obtain a high-performance filter in rare filter. We examined the improvement of superconducting filter properties using dielectric rod trimming. We examined the optimum position and arrangement of sapphire rod. This method was very effective for the improvement of the filter properties, because the sapphire rod can improve the connection parameters between the resonators. However, we found that it is necessary to use a high-dielectric rod in order to shift the resonance frequency more. We compared the change of filter properties using different dielectric trimming rod, εr=20,39 and 42.
  • Measurement of dielectric constant of R-,A-,C-plane sapphire substrates and fabrication of YBCO thin films on these substrates., SHIRAKAWA Masanobu, WATANABE Shinobu, AIZAWA Keiji, KUSUNOKI Masanobu, MUKAIDA Masashi, OHSHIMA Shigetoshi, IEICE technical report. Microwaves, 103, 21, 1, 7,   2003 04 16 , http://ci.nii.ac.jp/naid/110003179335
    Summary:Sapphire substrates are expected as suitable substrates of superconducting microwave devices, however, there are few reports on anisotropic dielectric constant of the sapphire substrates. Therefore, we examine the temperature dependence of dielectric constant. This paper presents the measured results of dielectric constants of r-, a-, and c-plane sapphire substrates by the cavity resonance method. Also, we have examined the conditions of epitaxial CeO_2 films on these sapphire substrates, and also examined epitaxial growth of YBa_2Cu_3O_<7-δ> films were grown on these CeO_2 buffer layers.
  • Improvement of superconducting filter properties using dielectric rod trimming, mikami Hiroshi, ohsima Shigetoshi, mukaida Masashi, kusunoki Masanobu, aizawa Keiji, IEICE technical report. Microwaves, 103, 21, 29, 35,   2003 04 16 , http://ci.nii.ac.jp/naid/110003179340
    Summary:The superconductig filter properties are affected by the deviation of substrate parameters, for example thickness and the value of dielectric constant and so on. Therefore it is very difficult to obtain a high-performance filter in rare filter. We examined the improvement of superconducting filter properties using dielectric rod trimming. We examined the optimum position and arrangement of sapphire rod. This method was very effective for the improvement of the filter properties, because the sapphire rod can improve the connection parameters between the resonators. However, we found that it is necessary to use a high-dielectric rod in order to shift the resonance frequency more. We compared the change of filter properties using different dielectric trimming rod, εr=20,39 and 42.
  • マイクロ波デバイス用高温超伝導膜の開発の現状, 楠正暢, 大嶋重利, 向田昌志, SUNDARESAN A, 田中康資, 荒木猛司, 平林泉, 田辺圭一, HOCHMUTH H, 応用物理学関係連合講演会講演予稿集, 50th, 1, 286,   2003 03 27 , http://jglobal.jst.go.jp/public/200902292786135470
  • Fundamentals and Applications of High-temperature Superconducting Microwave and Millimeter Wave Devices., OSHIMA SHIGETOSHI, KUSUNOKI MASANOBU, 低温工学, 38, 1, 3, 8,   2003 01 25 , 10.2221/jcsj.38.3, http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902273834715501
  • Measurement of Permittivity of a Sapphire Dielectric Plate by the Cavity Resonance Method, WATANABE Shinobu, UCHIDA Takashi, KUSUNOKI Masanobu, MUKAIDA Masashi, OHSHIMA Shigetoshi, Cryogenic engineering, 38, 1, 27, 30,   2003 01 25 , 10.2221/jcsj.38.27, http://ci.nii.ac.jp/naid/10010282649
  • Fundamentals and Applications of High-temperature Superconducting Microwave and Millimeter Wave Devices., OHSHIMA Shigetoshi, KUSUNOKI Masanobu, TEION KOGAKU, 38, 1, 3, 8,   2003 , 10.2221/jcsj.38.3, http://ci.nii.ac.jp/naid/130004457080
    Summary:This paper discusses the microwave and millimeter wave fundamentals and applications of high-temperature superconductors. First, a high-temperature superconducting filter subsystem for a base station is described as an example of microwave devices. In the USA, over 1, 000 systems are already working as filter subsystems in 2 G mobile telephone base stations. In Japan, a field trial was carried out for a filter subsystem of an IMT-2000 base station. As the result, the effectiveness of the superconducting filter subsystem was clarified. Therefore, the demand for superconducting filter subsystems for base stations will increase in the future. A SIS mixer and superconducting calorimeter were described as examples of millimeter and sub-millimeter wave devices. Using a Nb/AlOx/Nb SIS junction and X-ray calorimeter, which utilized micromachine technology, the resolution of such devices was quite high compared to that of conventional devices.
  • Measurement of Permittivity of a Sapphire Dielectric Plate by the Cavity Resonance Method., WATANABE Shinobu, UCHIDA Takashi, KUSUNOKI Masanobu, MUKAIDA Masashi, OHSHIMA Shigetoshi, TEION KOGAKU, 38, 1, 27, 30,   2003 , 10.2221/jcsj.38.27, http://ci.nii.ac.jp/naid/130004457084
    Summary:Development of microwave integrated circuits and high-Tc superconductive thin-film circuits is performed briskly, and dielectric substrate is used as the material. Circular cavity resonance and microstripline resonator methods are used for measuring the permittivity of dielectric substrates in the microwave region. This paper presents the measured results of permittivity of c-sapphire and r-sapphire substrates by these methods.
  • マイクロ波応用を目指した,Tl系薄膜の開発, 浅田秀人, SUNDARESAN A, BADICA P, 伊予彰, 田中康資, 楠正暢, 大嶋重利, 応用物理学会学術講演会講演予稿集, 63rd, 1, 215,   2002 09 24 , http://jglobal.jst.go.jp/public/200902177235825499
  • Measurement of Surface Resistance of Large Area Superconducting Films., KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, LORENZ M, HOCHMUTH H, NATUSCH D, TAHRIGEN T, 電子情報通信学会技術研究報告, 100, 399(SCE2000 28-36), 49, 54,   2000 10 27 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902117804854173
  • Measurement of Surface Resistance of Large Area Superconducting Films, Kusunoki M, Mukaida M, Ohshima S, M Lorenz, H Hochmuth, D Natusch, T Tahrigen, Technical report of IEICE. SCE, 100, 399, 49, 54,   2000 10 20 , http://ci.nii.ac.jp/naid/110003187616
    Summary:Experimental errors in the measurement of surface resistance(R_s)of superconductor using the dielectric resonator are discussed. Thermal contract of the dielectric, loss tangent of the dielectric, and the amount of scatter of several measurements in the resonance frequency and the quality factor are investigated. The R_s values of the 3-inch YBa_2Cu_3O_y films are measured using 3 kind of sapphires that have different diameter(3.8, 5.8, 9.5 GHz). Scaled R_s to 10 GHz is almost the same in a film with uniform critical density(J.C). On the other hand, differen R_S values that correspond to the J_c distribution are observed in the film that has lack of uniformity in J_c.
  • Design of Cross-coupled Microstrip Bandpass Filter., KIMPARA TOMOYUKI, KUSUNOKI MASANOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 電子情報通信学会技術研究報告, 100, 274(SCE2000 11-27), 75, 79,   2000 08 29 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902169263099644
  • SCE2000-22 / MW2000-86 Design of Cross-coupled Microstrip Bandpass Filter, Kinpara Tomoyuki, Kusunoki Masanobu, Mukaida Masashi, Ohshima Sigetoshi, Technical report of IEICE. SCE, 100, 274, 75, 79,   2000 08 22 , http://ci.nii.ac.jp/naid/110003187602
    Summary:High Temperature Superconductor(HTS) with having low surface resistance at microwave band is fablicated to be applied to filters that have low insertion loss and sharp skirt characteristics. And it is expected to be applied to mobile telecommuniction system. We have developed an Elliptic Funution. Elliptic Function filer that allows apir of transmission zeros to be placed at the band edges is less component compaired with normal hairpin filter. This paper presents recent developments of an 8-pole planar HTS bandpass fitler with elliptic function response by Sonnet-EM.
  • SCE2000-22 / MW2000-86 Design of Cross-coupled Microstrip Bandpass Filter, Kinpara Tomoyuki, Kusunoki Masanobu, Mukaida Masashi, Ohshima Shigetoshi, IEICE technical report. Microwaves, 100, 275, 75, 79,   2000 08 22 , http://ci.nii.ac.jp/naid/110003190148
    Summary:High Temperature Superconductor(HTS)with having low surface resistance at microwave band is fablicated to be applied to filters that have low insertion loss and sharp skirt characteristics. And it is expected to be applied to mobile telecommuniction system. We have developed an Elliptic Funution. Elliptic Function filer that allows apir of transmission zeros to be placed at the band edges is less component compaired with normal hairpin filter. This paper presents recent developments of an 8-pole planar HTS bandpass fitler with elliptic function response by Sonnet-EM.
  • Evaluation of surface resistance of YBCO thin film made by inductive coupled plasma sputtering., Suzuki Toshiyuki, Kusunoki Masanobu, Mukaida Masashi, Ohshima Shigetoshi, Technical report of IEICE. SCE, 99, 249, 13, 18,   1999 07 30 , http://ci.nii.ac.jp/naid/110003187568
    Summary:Microwave surface resistance (Rs) of YBa_2Cu_3O_y (YBCO) thin film prepared by inductive coupled plasma sputtering (ICP) was investigated. The Rs was measured by the dielectric resonator method at 22 GHz. The film was deposited on both side of the LaAlO_3 (LAD) substrate. The Rs of the back side film was lower than first side. It indicates that effective substrate temperature during the secound deposition was higher than that of first deposition. The YBCO was deposited also on the BaSnO_3/MgO substrate. The Rs values of the film was 0.38 mΩ at 35 K and 1.13 mΩ at 77 K. The Rs values scaled to 10 GHz were 0.08 mΩ at 35 K and 0.23 mΩ at 77 K, respectively.
  • The effect of in-plain 45.DEG. misaligned orientation on surface resistance of c-axis YBa2Cu3Oy films on MgO substrate., KUSUNOKI MASANOBU, TAKANO YOSHINOBU, MUKAIDA MASASHI, OSHIMA SHIGETOSHI, 電子情報通信学会技術研究報告, 99, 28(SCE99 1-13), 59, 64,   1999 04 23 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902118834864307
  • Examination of measurement accuracy of suface resistance by probe-coupling type microstripline resonator method : the effect of the cavity's shapce on measurement accuracy, Okai Daisuke, Kusunoki Masanobu, Mukaida Masashi, Ohshima Shigetoshi, Technical report of IEICE. SCE, 99, 28, 53, 58,   1999 04 23 , http://ci.nii.ac.jp/naid/110003187561
    Summary:The microstripline resonator (MSR) is used for the measurement of surface resistance of superconducting thin film. We have developed a probe-coupling type MSR. By this method, it is possible to measure the surface resistance of thin film without attaching contacts to the film. To obtain the accurate value of surface resistance, it needs the technique that can measure the quality factor accurately. This paper reports the effect of the cavity's shape on measurement accuracy. For accurate measurement of the surface resistance of superconducting thin film, it was found that the positions of the cavity's ceiling and antennas are important parameters.
  • The effect of in-plan 45゜misaligned orientation on surface resistance of c-axis YBa_2Cu_3O_y films on MgO substrate, Kusunoki Masanobu, Takano Yoshinobu, Mukaida Masasi, Ohshima Shigetoshi, Technical report of IEICE. SCE, 99, 28, 59, 64,   1999 04 23 , http://ci.nii.ac.jp/naid/110003187562
    Summary:The effect of in-plain misaligned orientation on surface resistance (R_s) of c-axis YBa_2Cu_3O_y(YBCO) films on MgO substrates is discussed. Samples that have various amounts of 45゜grains were prepared using self-template technique. The R_s's were measured by dielectric resonator methods. The results indicated that the internal R_s of the 45゜grain is the same as that of the 0゜grain. Furthermore, R_s at the 45゜-45゜grain boundary is also the same as that of the 0゜-0゜grain boundary. On the other hand, 0゜-45゜grain boundaries lead to increase in R_s. Perfect 0゜in-plane aligned YBCO film showed R_s of 0.60mΩ at 20K and 3.26mΩ at 77K. The R_s's scaled to 10GHz were 0.12mΩ at 20K and 0.67mΩ at 77K, respectively.
  • Development of a miniaturized cooling system for HTS antennas and its effects on antenna properties, Ehata Katsufumi, Sato Kazuaki, Kusunoki Masanobu, Mukaida Masashi, Ohshima Shigetoshi, Suzuki Yuichiro, Technical report of IEICE. SCE, 99, 28, 71, 78,   1999 04 23 , http://ci.nii.ac.jp/naid/110003187564
    Summary:High Temperature Superconducting (HTS) antenna is expected to have high efficiency and low noise. In order to realize the HTS antenna, consideration on cooling system for antenna is important. We have developed a miniaturized cooling system for HTS antennas of portable size using stirling type cryocooler. It is found that the antenna properties are influenced due to the placement of antenna into the system and antenna gain is enhanced due to lens effect. In this paper, outline of the cooling system and properties of antenna attached to it are reported.
  • Examination of measurement accuracy of suface resistance by probe-coupling type microstripline resonator method : the effect of the cavity's shapce on measurement accuracy, Okai Daisuke, Kusunoki Masanobu, Mukaida Masashi, Ohshima Shigetoshi, IEICE technical report. Microwaves, 99, 29, 53, 58,   1999 04 23 , http://ci.nii.ac.jp/naid/110003189941
    Summary:The microstripline resonator (MSR) is used for the measurement of surface resistance of superconducting thin film. We have developed a probe-coupling type MSR. By this method, it is possible to measure the surface resistance of thin film without attaching contacts to the film. To obtain the accurate value of surface resistance, it needs the technique that can measure the quality factor accurately. This paper reports the effect of the cavity's shape on measurement accuracy. For accurate measurement of the surface resistance of superconducting thin film, it was found that the positions of the cavity's ceiling and antennas are important parameters.
  • The effect of in-plan 45゜misaligned orientation on surface resistance of c-axis YBa_2Cu_3O_y films on MgO substrate, Kusunoki Masanobu, Takano Yoshinobu, Mukaida Masasi, Ohshima Shigetoshi, IEICE technical report. Microwaves, 99, 29, 59, 64,   1999 04 23 , http://ci.nii.ac.jp/naid/110003189942
    Summary:The effect of in-plain misaligned orientation on surface resistance (R_s) of c-axis YBa_2Cu_3O_y(YBCO) films on MgO substrates is discussed. Samples that have various amounts of 45゜grains were prepared using self-template technique. The R_s's were measured by dielectric resonator methods. The results indicated that the internal R_s of the 45゜grain is the same as that of the 0゜grain. Furthermore, R_s at the 45゜-45゜grain boundary is also the same as that of the 0゜-0゜grain boundary. On the other hand, 0゜-45゜grain boundaries lead to increase in R_s. Perfect 0゜in-plane aligned YBCO film showed R_s of 0.60mΩ at 20K and 3.26mΩ at 77K. The R_s's scaled to 10GHz were 0.12mΩ at 20K and 0.67mΩ at 77K, respectively.
  • Development of a miniaturized cooling system for HTS antennas and its effects on antenna properties, Ehata Katsufumi, Sato Kazuaki, Kusunoki Masanobu, Mukaida Masashi, Ohshima Shigetoshi, Suzuki Yuichiro, IEICE technical report. Microwaves, 99, 29, 71, 78,   1999 04 23 , http://ci.nii.ac.jp/naid/110003189944
    Summary:High Temperature Superconducting (HTS) antenna is expected to have high efficiency and low noise. In order to realize the HTS antenna, consideration on cooling system for antenna is important. We have developed a miniaturized cooling system for HTS antennas of portable size using stirling type cryocooler. It is found that the antenna properties are influenced due to the placement of antenna into the system and antenna gain is enhanced due to lens effect. In this paper, outline of the cooling system and properties of antenna attached to it are reported.
  • Investigation of the uniformity of both-side YBCO thin films fabricated by inductive conpled plasma sputtering, Kusunoki Masanobu, Suzuki Toshiyuki, Mukaida Masasi, Ohshima Shigetoshi, Technical report of IEICE. SCE, 98, 222, 25, 30,   1998 07 28 , http://ci.nii.ac.jp/naid/110003187481
    Summary:A fabrication technique for large area and both-side YBa_2Cu_3O_y thin films using inductive conpled plasma sputtering is discussed. The critical temperature Tc and the crystallinity of the film deposited on one side were almost the same as those of the film deposited on the other side. To investigate the uniformity of a film, a 50x50 sq.mm.substrate was cut into 10x10 sq.mm.cells. Thickness variations within 10% were obtained over an area with diameter larger than 40 mm., even when using a 50-mm diameter target. The values of the c-axis length, Tc, and critical current density at 77K were found to range from 1.1683〜1.1693nm, 83.0〜85.5 K, and 1.7〜1.8mA/cm^2, respectively.The film was relatively homogeneous on a large area. On the other hand, the distribution of the Tc's does not correspond with that of the c-axis lengths obtained over various areas of the film. This indicates that microscopic inhomogeneity such as crystallinity or impurity could possibly exist in the film.
  • Measurement of the surface resistance and the magnetic penetration depth by the microstripline resonato method ; Examination of effect of the thin film thickness on measurement accuracy of Rs and λ, Okai Daisuke, Tomiyama Takafumi, Shinkai Yoko, Kusunoki Masanobu, Ohshima Shigetoshi, Technical report of IEICE. SCE, 98, 14, 35, 42,   1998 04 22 , http://ci.nii.ac.jp/naid/110003187471
    Summary:Using the microstripline resonator method, we can measure all of the values of the surface resistance. Rs and magnetic penetration depth, λ of superconducting thin film and the dielectric constant, ε_r and dielectric loss, tan δ of dielectric substrate, which are important parameters for designing superconducting microwave passive devices. However, the microstripline resonator method for accurate measurement of the values of the Rs and the λ has not yet been examined systematically. We investigated the effect of the thin film thickness on accuracy of the values of the Rs and the λ. The results show that in order to increase the accuracy of the Rs and the λ, we must take into consideration the thickness of the stripline. The Rs λ of YBCO thin film were measured using the microstripline resonator method. The Rs was 177.2μΩ at 3.9 GHz and at 21K, and the λ(0) was found out to be 0.37μm.
  • Examination on Gap-Coupled Type Patch Antenna, Ehata Katsufumi, Kusunoki Masanobu, Ohshima Shigetoshi, Technical report of IEICE. SCE, 98, 14, 65, 72,   1998 04 22 , http://ci.nii.ac.jp/naid/110003187475
    Summary:Superconducting patch antenna is expected to be convenient for practical use due to its possibility of being cooled by cryocooler and integrated to other superconducting microwave devices. However, power handling capability is one of the most important problems to make practicable superconducting microwave devices. This paper discusses the facts that power handling capability of superconducting patch antenna varies with the film quality, and gap-coupling fed patch antenna is expected to have the power handling capability that is more than four times larger than that of conventional direct fed patch antenna. It also reports the effect of configuration on antenna propaties that is on resonance frequency, input impedance and gain.
  • Measurement of the surface resistance and the magnetic penetration depth by the microstripline resonator method : Examination of the effect of the thin film thickness on measurement accuracy of Rs and λ, Okai Daisuke, Tomiyama Takafumi, Shinkai Yoko, Kusunoki Masanobu, Ohshima Shigetoshi, IEICE technical report. Microwaves, 98, 15, 35, 42,   1998 04 22 , http://ci.nii.ac.jp/naid/110003189632
    Summary:Using the microstripline resonator method, we can measure all of the values of the surface resistance, Rs and magnetic penetration depth, λ of superconducting thin film and the dielectric constant, ε_r and dielectric loss, tan δ of dielectric substrate, which are important parameters for designing superconducting microwave passive devices. However, the microstripline resonator method for accurate measurement of the values of the Rs and the λ has not yet been examined systematically. We investigated the effect of the thin film thickness on accuracy of the values of the Rs and the λ. The results show that in order to increase the accuracy of the Rs and the λ, we must take into consideration the thickness of the stripline. The Rs and λ of YBCO thin film were measured using the microstripline resonator method. The Rs was 177.2μΩ at 3.9GHz and at 21K, and the λ(0) was found out to be 0.37μm.
  • Examination on Gap-Coupled Type Patch Antenna, Ehata Katsufumi, Kusunoki Masanobu, Ohshima Shigetoshi, IEICE technical report. Microwaves, 98, 15, 65, 72,   1998 04 22 , http://ci.nii.ac.jp/naid/110003189636
    Summary:Superconducting patch antenna is expected to be convenient for practical use due to its possibility of being cooled by cryocooler and integrated to other superconducting microwave devices. However, power handling capability is one of the most important problems to make practicable superconducting microwave devices. This paper discusses the facts that power handling capability of superconducting patch antenna varies with the film quality, and gap-coupling fed patch antenna is expected to have the power handling capability that is more than four times larger than that of conventional direct fed patch antenna. It also reports the effect of configuration on antenna propaties that is on resonance frequency, input impedance and gain.
  • Effects of induction coil to YBCO thin films in sputtering : Induction-coil-coupled sputtering, KUSUNOKI Masanobu, TAKANO Yoshinobu, OHSHIMA Shigetoshi, Technical report of IEICE. SCE, 97, 219, 43, 48,   1997 07 30 , http://ci.nii.ac.jp/naid/110003187334
    Summary:Authors report on an induction-coil-coupled sputtering technique allowing the deposition of large area high-Tc superconducting thin films. This technique was proven to be able to produce uniform thin films over large areas. Uniformity in film thickness of below 7% was obtained over an area of 40-mm diameter using a 50-mm diameter YBCO target. The induction coil also played an important role in determining the qualities of YBCO thin films. The critical temperature and the density of particles on the surface of the films were influenced by the cathode voltage. On the other hand, the orientation and the grain size of the film were influenced by the cathode current. Using conventional sputtering, the cathode voltage and current cannot be varied independently, however, in this system, variation is possible by means of controlling the applied power of the induction coil.
  • Study on Optimum Configuration of Superconducting Distributed Element Filters., TOMIYAMA TAKAFUMI, OKAI DAISUKE, KUSUNOKI MASANOBU, OSHIMA SHIGETOSHI, 電子情報通信学会技術研究報告, 97, 20(MW97 1-16), 49, 54,   1997 04 23 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902133904044565
  • Study on Optimum Configuration of Superconducting Distriluted Element Filters, Tomiyama Takafumi, Okai Daisuke, Kusunoki Masanobu, Ohshima Shigetoshi, Technical report of IEICE. SCE, 97, 19, 49, 54,   1997 04 23 , http://ci.nii.ac.jp/naid/110003187319
    Summary:High-temperature superconducting filters with low insertion loss and high-sharp cut are expected to be applied to mobile communication system, however, it is very difficult to obtain a large scale and high quality HTS films at present. So, it is important to study on optimum configuration of HTS filters. In this paper, we present the optimum configuration of hairpin filter and interdigital filter with resonance frequency of 5GHz. In these filters, interdigtal filter is better to reduce in size
  • Design, Fabrication and Characterization of Superconducting Patch Antenna, Ehata Katsufumi, Kusunoki Masanobu, Ohshima Shigetoshi, Technical report of IEICE. SCE, 97, 19, 55, 60,   1997 04 23 , http://ci.nii.ac.jp/naid/110003187320
    Summary:By applying superconductor to microwave devices, for example antenna, filter, transmission line and delay line, these devices become high efficiency, due to low surface resistance of the superconductor, which is 〜10^2 lower than that of normal conductor. We designed, fabricated and characterized patch antenna made of YBCO thin film. It was observed from experiment that the gain of YBCO antenna was 1. 04dB higher than that of gold antenna at 40K. However gain of YBCO antenna decreased as temperature increased, and YBCO antenna did not work over the temperature of 70K.
  • Study on Optimum Configuration of Superconducting Distriluted Element Filters, Tomiyama Takafumi, Okai Daisuke, Kusunoki Masanobu, Ohshima Shigetoshi, IEICE technical report. Microwaves, 97, 20, 49, 54,   1997 04 23 , http://ci.nii.ac.jp/naid/110003189169
    Summary:High-temperature superconducting filters with low insertion loss and high-sharp cut are expected to be applied to mobile communication system, however, it is very difficult to obtain a large scale and high quality HTS films at present. So, it is important to study on optimum configuration of HTS filters. In this paper, we present the optimum configuration of hairpin filter and interdigital filter with resonance frequency of 5GHz. In these filters, interdigtal filter is better to reduce in size
  • Design, Fabrication and Characterization of Superconducting Patch Antenna, Ehata Katsufumi, Kusunoki Masanobu, Ohshima Shigetoshi, IEICE technical report. Microwaves, 97, 20, 55, 60,   1997 04 23 , http://ci.nii.ac.jp/naid/110003189170
    Summary:By applying superconductor to microwave devices, for example antenna, filter, transmission line and delay line, these devices become high efficiency, due to low surface resistance of the superconductor, which is 〜10^2 lower than that of normal conductor. We designed, fabricated and characterized patch antenna made of YBCO thin film. It was observed from experiment that the gain of YBCO antenna was 1. 04dB higher than that of gold antenna at 40K. However gain of YBCO antenna decreased as temperature increased, and YBCO antenna did not work over the temperature of 70K.
  • Analysis on Vortex Flow Transistor composed of nanobridges., 藤巻朗, 楠正暢, 鬼頭傑, 吉田宗司, 安藤浩哉, 早川尚夫, 応用物理学関係連合講演会講演予稿集, 43rd, 1, 151,   1996 03 , https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200902119941313751
  • Josephson Vortex Flow Transistor with vertically stacked structure., 吉田宗司, 楠正暢, 鬼頭傑, 安藤浩哉, 藤巻朗, 早川尚夫, 応用物理学関係連合講演会講演予稿集, 43rd, 1, 151,   1996 03 , https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200902125534581679
  • Abrikosov Vortex Flow Device with Nano Bridges, Kusunoki M, Kito M, Yoshida S, Andoh S, Fujimaki A, Hayakawa H, Technical report of IEICE. SCE, 95, 338, 13, 18,   1995 10 25 , http://ci.nii.ac.jp/naid/110003187356
    Summary:Abrikosov vortex flow transistors (AVFT) with nano bridges were studied. The periodic modulations of voltage (V) and critical current (Ic) for an external magnetic field (φ) were observed from 4.2 K to critical temperature. This result indicated that the AVFT operated without thermal heating effects. This periodic modulation of the V-φand Ic-φcurves were similar to those of a familiar SQUID. However, the current (I)-V characteristic showed Abrikosov vortex motion that was different from Josephson effect. Modulation depth and dV/dφ were 0.5mV and 2.6mV/φ0 at 10K, respectively. This type of AVFT is expected to be current-voltage converter. The switching speed of this device is estimated to be a few pico second.
  • Josephson Vortex Flow Transistor., 鬼頭傑, 楠正暢, 吉田宗司, 安藤浩哉, 藤巻朗, 早川尚夫, 応用物理学会学術講演会講演予稿集, 56th, 1, 128,   1995 08 , https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200902127256588031
  • Flux Flow Transistor with nano structures., 楠正暢, 鬼頭傑, 吉田宗司, 安藤浩哉, 藤巻朗, 早川尚夫, 応用物理学会学術講演会講演予稿集, 56th, 1, 128,   1995 08 , https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200902184251785606
  • The Influence of the Control Current on Vortices in SFFT., 安藤浩哉, 鬼頭傑, 楠正暢, 藤巻朗, 早川尚夫, 応用物理学関係連合講演会講演予稿集, 42nd, Pt 1, 109,   1995 03 , https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200902130076054013
  • Flux Flow Transistorにおける加工法と特性評価, 鬼頭傑, 楠正暢, 安藤浩哉, 藤巻朗, 早川尚夫, 電気関係学会東海支部連合大会講演論文集, 1994, 187,   1994 10 , https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200902195353305104
  • Numerical Calculation on Critical Current Density of the Superconducting Narrow Line., 安藤浩哉, 楠正暢, 藤巻朗, 早川尚夫, 応用物理学会学術講演会講演予稿集, 55th, 1, 103,   1994 09 , https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200902150565277590
  • Corrugation Flux Flow Transistor., 藤巻朗, 楠正暢, 安藤浩哉, 鬼頭傑, 早川尚夫, 応用物理学会学術講演会講演予稿集, 55th, 1, 83,   1994 09 , https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200902176953740977
  • Micro-Flux-Flow-Transistor with submicron structures., 楠正暢, 安藤浩哉, 藤巻朗, 早川尚夫, 応用物理学会学術講演会講演予稿集, 55th, 1, 83,   1994 09 , https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200902192395394159
  • The influence of the surface barrier to flux entry on I-V characteristics for a superconducting flux flow transistor, Andoh Hiroya, Kusunoki Masanobu, Fujimaki Akira, Hayakawa Hisao, Technical report of IEICE. SCE, 94, 156, 67, 72,   1994 07 20 , http://ci.nii.ac.jp/naid/110003187521
    Summary:The nonlinearity can be found in 1-V caracteristics for some superconducting flux transistors.It is interesting to fund the nonlinearity for the sample using high quality films.There may be some flux creep mechanism without a flux pinning.We studied the influence of the surface barrier to flux entry on 1-V characteristics for a superconducting flux flow transistor using numerical calculation.And it was found that the surface barrier play an important role in the nomlinearity of 1-V characteristics for flux flow transistors.
  • Submicrometer patterning technique of oxide superconducting thin films using focused ion beam-Superconductivity of YBaCuO submicrometer line, Kusunoki Masanobu, Akaike Hiroyuki, Fujimaki Akira, Hayakawa Hisao, Technical report of IEICE. SCE, 94, 8, 47, 52,   1994 04 20 , http://ci.nii.ac.jp/naid/110003187541
    Summary:We have developed a deep submicrometer pattening technology of high critical temperature superconducting,films without degradation.The technology enabled us to patten a YBaCuO strip line with width of 180 nm.The line showed good superconducivity. The lithography technique is based on the Focused ion beam Implanted Niobium Patterning (FINP) method.We made Nb mask pattern using the technique which is expect to be 100 nm resolution.The patterns are transferred into the Au, YBaCuO layer in an Ar ion beam etching (IBE) step.Dependence on critical current density of line width systematically showed the importance of cooling to decrease the degradation of YBaCuO in the IBE.
  • Effect of surface barrier on the characteristics of Flux Flow Transistor., 藤巻朗, 鬼頭傑, 楠正暢, 安藤浩哉, 早川尚夫, 応用物理学関係連合講演会講演予稿集, 41st, Pt 1, 143,   1994 03 , https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200902113326282562
  • Fabrication of Fluoridated Hydroxyapatite Thin Film and Sheet, S. Hontsu, N. Kato, H. Nishikawa, M. Kusunoki, T. Hayami, Y. Hashimoto, The 11th Asian BioCeramics Symposium in conjunction with the 22nd Symposium on Apatite, 1, 2
  • Development of Objective ADL Assessment Particularly in Frail Older Adults Using a Kinect Sensor, Nobuo Takeshima, Takeshi Kohama, Masanobu Kusunoki, Takashi Ogayu, Soichi Okada, Eiji Fujita, Mohammod M. Islam, William F. Brechue, JOURNAL OF AGING AND PHYSICAL ACTIVITY, 24, S41, S41,   2016 06 , Refereed
  • Surface resistance of YBa2Cu3O7-delta thin films on MgO lattice-matched BaZrO3 buffer layers, M Mukaida, Y Yamazaki, Y Shingai, S Makino, M Kusunoki, A Saito, S Ohshima, SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 17, 3, 337, 341,   2004 03 , 10.1088/0953-2048/17/3/007
    Summary:The growth and characterization of a BaZrO3 buffer layer for controlling the in-plane orientation of YBa2Cu3O7-delta films grown on MgO substrates is described. BaZrO3 buffer layers and YBa2Cu3O7-delta films are grown by pulsed laser deposition. 45degrees grain boundaries typically exist in YBa2Cu3O7-delta films grown on MgO(001) substrates; these are fatal defects for microwave device applications and are eliminated using the BaZrO3 buffer layer. The preferred orientation and in-plane orientation with respect to the MgO substrates are estimated for MgO lattice-matched BaZrO3 buffer layers grown on MgO substrates. YBa2Cu3O7-delta films grown at an optimum growth temperature of 710 degreesC on BaZrO3 buffer layers on MgO(001) substrates show a lower surface resistance (R-s) than those on MgO(001) substrates without BaZrO3 buffer layers.
  • Demonstration of surface resistance mapping of large-area HTS films using the dielectric resonator method, M. Kusunoki, Y. Takano, K. Nakamura, M. Inadomaru, D. Kosaka, A. Nozaki, S. Abe, M. Yokoo, M. Lorenz, H. Hochmuth, M. Mukaida, S. Ohshima, Physica C: Superconductivity and its Applications, 383, 4, 374, 378,   2003 01 01 , 10.1016/S0921-4534(02)01347-3
    Summary:A scanning mapping technique of surface resistance (Rs) using the sapphire dielectric resonator was developed and demonstrated for a 3-inch-diameter YBa2Cu3Oy film. The area of the 3-inch film was divided by 5 × 5 mm grid for scan, resulting in 101 measurement points. Values of Rs in the film varied from 2.9 to 3.8 mΩ at 22 GHz and 77 K. The distribution of Rs corresponded to that of the critical current density. Sampling of quality factors at each point was performed using non-contact measurement between film and sapphire. Since the airtight chamber was filled with dry N2 gas to avoid film degradation by frost and water during the warming process, perfect non-destructive measurement is realized. Fluctuation of distance between the surface of film and dielectric rod was monitored by resonance frequency. Errors in Rs caused by the fluctuation were calculated within ±0.01 mΩ. Furthermore, the system could detect a small (0.3 mm × 0.5 mm) scratch defect as well as the gradient of film thickness on Ag film. This technique is effective for inspection of large-area high temperature superconducting films for microwave applications. © 2002 Elsevier Science B.V. All rights reserved.
  • Observation of vortex patterns and movement in Y-123 and Bi-2212 samples by means of the Bitter technique, S Ohshima, T Kawai, S Kanno, H Yamada, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 372, 1872, 1872, 1875,   2002 08
    Summary:We have examined vortex patterns and vortex movement in single crystal Y-123 and Y-123 quench-melt growth (QMG) samples, and also in single crystal Bi-2212 and Bi-2223 silver sheath material, by means of the Bitter technique. The observation temperature (T-d) and the strength of an external magnetic field (Hex) were varied. We observed movement of the vortices in single crystal Y-123 at higher temperatures (T-d > 0.7T(c)) with Hex = 100 Gauss. The distance moved depended on Td. However, the movement also depended on the external do magnetic field. It became clear that the vortex moved even at low temperature in a small magnetic field. We observed the vortex pattern of a Y-123 QMG sample. The vortices existed locally around Y-211 precipitate particles. It was also found from the observation of vortices in single crystal Bi-2212 that the vortices actively moved when the vortex interval was larger than two lambda. The vortex movement of Bi-2223 silver sheath material was different compared to that of single crystal Bi-2212. (C) 2002 Elsevier Science B.V. All rights reserved.
  • Observation of vortex patterns and movement in Y-123 and Bi-2212 samples by means of the Bitter technique, S Ohshima, T Kawai, S Kanno, H Yamada, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 372, 1872, 1875,   2002 08 , 10.1016/S0921-4534(02)01010-9
    Summary:We have examined vortex patterns and vortex movement in single crystal Y-123 and Y-123 quench-melt growth (QMG) samples, and also in single crystal Bi-2212 and Bi-2223 silver sheath material, by means of the Bitter technique. The observation temperature (T-d) and the strength of an external magnetic field (Hex) were varied. We observed movement of the vortices in single crystal Y-123 at higher temperatures (T-d > 0.7T(c)) with Hex = 100 Gauss. The distance moved depended on Td. However, the movement also depended on the external do magnetic field. It became clear that the vortex moved even at low temperature in a small magnetic field. We observed the vortex pattern of a Y-123 QMG sample. The vortices existed locally around Y-211 precipitate particles. It was also found from the observation of vortices in single crystal Bi-2212 that the vortices actively moved when the vortex interval was larger than two lambda. The vortex movement of Bi-2223 silver sheath material was different compared to that of single crystal Bi-2212. (C) 2002 Elsevier Science B.V. All rights reserved.
  • Ln dependence in Ln(2)CuO(4) buffer layers of c-axis in-plane aligned a-axis oriented YBa2Cu3O7-delta thin film growth, M Mukaida, M Kusunoki, S Ohshima, PHYSICA C, 357, 1382, 1385,   2001 08 , 10.1016/S0921-4534(01)00594-9
    Summary:Lanthanide (Ln) atom in Ln(2)CuO(4) buffer layer dependence of c-axis in-plane aligned a-axis oriented YBa2Cu3O7-delta (YBCO) thin film growth is discussed and preferred orientation growth model of a bc-plane matched growth model is proposed. The c-axis in-plane aligned a-axis oriented YBCO thin films are very attractive from both the researches on the origin of high T-c. superconductors and microelectronics device applications. However the c-axis in-plane aligned a-axis oriented films are difficult to grow. We have been proposing Ln(2)CuO(4) buffer layers for the c-axis in-plane aligned a-axis oriented YBCO thin fdm growth. We have examined various Ln atoms in Ln(2)CuO(4) buffer layers for the growth of YBCO thin films by pulsed laser deposition. From a lattice matching point of view, a Tb2CuO4 buffer layer is the best one for the c-axis in-plane aligned a-axis oriented YBCO thin films. However the result shows that the Nd2CuO4 and Tb2CuO4 buffer layer causes YBCO thin films with c-axis oriented portion about 35% and 32%, by X-ray diffraction peaks, which is much larger than those on Gd2CuO4 buffer layers (7.4%). The most promising Ln atom in Ln(2)CuO(4) buffer layers for the growth of the c-axis in-plane aligned a-axis oriented YBCO thin films so far is Gd2CuO4 buffer layers or Eu2CuO4 buffer layers. (C) 2001 Elsevier Science B.V. All rights reserved.
  • Precise surface resistance measurements of YBa2Cu3Oy films with the dielectric resonator method, H Obara, S Kosaka, A Sawa, H Yamasaki, Y Kobayashi, T Hashimoto, S Ohshima, M Kusunoki, M Inadomaru, PHYSICA C, 357, 1511, 1515,   2001 08 , 10.1016/S0921-4534(01)00533-0
    Summary:The surface resistance of high-T-c superconducting films at microwave frequencies was carefully measured by the dielectric resonator method using two sapphire rods. The dielectric resonator method is appropriate for the standard measurement of surface resistance at microwave frequencies. In the present work, we focused on asymmetry in coupling and the parasitic coupling effect which cause error in this method and discussed the precision and accuracy of the measurements. Finally, we report on a round robin test in which the observed surface resistances in three institutes gave good agreement. These results were reflected in the working draft of the International Electrotechnical Commission Technical Committee 90 (IEC/TC90). (C) 2001 Elsevier Science B.V. All rights reserved.
  • High-quality Y-Ba-Cu-O thin films by PLD - Ready for market applications, M Lorenz, H Hochmuth, D Natusch, M Kusunoki, VL Svetchnikov, Riede, V, Stanca, I, G Kastner, D Hesse, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 11, 1, 3209, 3212,   2001 03 , 10.1109/77.919747
    Summary:Large-area poised laser deposition (PLD) has reached a state in terms of film quality and reproducibility which makes possible now real market applications of PLD-YBa2Cu3O7-delta (YBCO) thin films on both sides of it-plane sapphire substrates as HTSC devices in satellite and mobile communication systems. Bandpass filters optimized from PLD-YBCO thin films presently fulfill the requirements of the main national companies which are active in future communication techniques. A relatively simple PLD arrangement with fixed laser plume and rotating substrate, with an offset between the laser plume and the center of the substrate is employed to deposit laterally homogeneous 3-inch diameter Ag-doped YBCO thin films. With the experience of more than 1,000 doable-sided 3-inch diam, films a high degree of homogeneity and reproducibility of j(c) and R-s is reached. The extension up to 8-inch substrate diameter will increase the productivity of the flexible PLD technique considerably.
  • New surface resistance measurement technique of high-temperature superconductors using a probe coupling microstrip line resonator, D Okai, M Kusunoki, M Mukaida, S Ohshima, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 11, 1, 3078, 3081,   2001 03 , 10.1109/77.919713
    Summary:We have developed a new surface resistance (R-s) measurement technique of high-temperature superconductors using a probe coupling microstrip line resonator. In this technique, the probe coupling method is used to measure the R-s of superconductors without attaching any contacts to the superconductors, This paper reports the measurement process of the R-s of a superconducting fine-wire using this technique. The quality Factors of the copper wires, gold fine-wire and the Bi-Sr-Ca-Cu-O whisker crystal were measured by the probe coupling resonator method. The measurement results revealed that this technique is feasible for the R-s measurement of the superconducting fine-wire.
  • Miniaturized cooling systems for HTS antennas, K Ehata, K Sato, M Kusunoki, M Mukaida, S Ohshima, Y Suzuki, K Kanao, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 11, 1, 111, 114,   2001 03 , 10.1109/77.919297
    Summary:Two types of miniaturized cooling systems for High-Temperature Superconducting (HTS) antennas were designed and built, In this paper, details of these systems, measured and simulated properties of patch antennas installed in these systems, and results of a seal-off trial for 1 month are reported, Both the systems had portable size and weight and could cool the HTS devices. When a patch antenna with resonant frequency of 4.9 GHz was installed in the Ist cooling system, the radiation pattern of the antenna was strongly focused in the forward direction. This is because the vacuum chamber in which the antenna was packaged influenced the microwaves radiated from the antenna. Due to this effect, the directive gain of the antenna was enhanced by 11.2 dB. In the 2nd system, a seal-off-trial was carried out to investigate the airtight property that is necessary for thermal isolation. The temperature of the sample stage could be kept under the critical temperature of YBCO for 1 month without continuous vacuum pumping. The cooling systems developed in this work are expected to promote the practical use of HTS antennas.
  • Development of Rs mapping technique of HTS films, Abstract of EASSE, 25,   2001
  • Critical thickness of BaSnO3 buffer layer for YBa2Cu3O7-δ thin films on MgO substrates, K. Chiba, S. Makino, M. Mukaida, M. Kusunoki, S. Ohshima, Physica C: Superconductivity and its Applications, 349, 1-2, 35, 39,   2001 01 01 , 10.1016/S0921-4534(00)01508-2
    Summary:The critical thickness of BaSnO3 (BSO) buffer layer for YBa2Cu3O7-δ (YBCO) thin films on MgO substrate is discussed from viewpoints of the in-plane orientation and critical temperature. Thin films are grown by changing the thickness of BSO buffer layers at optimal growth temperature of YBCO films by pulse laser deposition. We are able to control the in-plane orientation of YBCO films with the BSO buffer layers thicker than 2 nm. This result indicates that BSO buffer layers can control the in-plane orientation of YBCO with a thickness less than the other buffer materials reported so far.
  • Strain induced synthesis of high temperature superconducting thin films, M Mukaida, S Makino, K Chiba, M Kusunoki, S Ohshima, PHYSICS IN LOCAL LATTICE DISTORTIONS: FUNDAMENTALS AND NOVEL CONCEPTS LLD2K, 554, 512, 516,   2001
    Summary:Microstructures of YBa2Cu3O7 (delta) / BaSnO3 superlattice are analyzed by Transmission electron microscopy. YBa2Cu3O7 (delta) / BaSnO3 superlattices are fabricated by a pulsed laser deposition technique with in-situ rotation of target materials. Typical growth conditions of substrate temperature and oxygen pressure are 710 degreesC and 400 mTorr, respectively. A few nm thick BaSnO3 insulating layers and YBa2Cu3O7-delta superconducting layers are sequentially deposited with total thickness of around 150 nm. Crystallographic characteristics of these superlattices are evaluated by x-ray diffractometry (XRD) and transmission electron microscopy (TEM). Several layers of YBa2Cu3O7 (delta) and BaSnO3 are clearly observed by TEM. The observed thickness of one layer of YBa2Cu3O7-delta and that of BaSnO3 films are 12 nm and 6.5 nm, respectively From a high-resolution TEM observation, the strain induced by lattice length difference between YBa2Cu3O7 (delta) and BaSnO3 are released by introducing misfit dislocations in the YBa2Cu3O7 (delta) films not in the BaSnO3 films. A new insulating layer is required with small lattice mismatch to YBa2Cu3O7-delta for avoiding introduction of misfit dislocations.
  • Relationship between the surface resistance and crystal orientation of YBa2Cu3O7-δ thin film(共著), IEEE Trans. on Applied Superconductivity, 11, 3493,   2001
  • The effect of lattice matching between buffer layer and YBa2Cu3O7-δ thin film on in-plane alignment of C-axis oriented thin films, K. Chiba, S. Makino, M. Mukaida, M. Kusunoki, S. Ohshima, IEEE Transactions on Applied Superconductivity, 11, 1, 2734, 2737,   2001 , 10.1109/77.919628
    Summary:The effect of lattice matching between YBa2Cu3O7-δ (YBCO) films and buffer layers as well as between buffer layers and MgO substrates have been discussed from viewpoints of crystalline, critical temperature and surface resistance of YBCO films. SrSnO3(SSO) as well as BaSnO3 (BSO) were used as buffer materials. SSO has closer lattice constant to YBCO than BSO. YBCO films were grown on these materials at the optimal growth temperature by pulse laser deposition. The FWHM of φ-scan (102) plane of YBCO films on SSO buffer layers was smaller than that of YBCO films on BSO buffer layers. However the values of FWHM of 005 rocking-curve of YBCO films on BSO buffer layer were smaller than that of YBCO films on SSO buffer layer. The difference of surface resistance between YBCO film on BSO buffer layer and YBCO film on SSO buffer layer was very small indicating superconducting properties are not mainly governed by lattice mismatch at this region. We obtained the same values for c-axis length and critical temperature in YBCO films on these materials.
  • Elimination of a-axis growth in YBa2Cu3O7-delta films on CeO2-buffered Al2O3, KD Develos, M Mukaida, M Kusunoki, S Ohshima, JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 39, 3A, 1116, 1120,   2000 03 , 10.1143/JJAP.39.1116
    Summary:The elimination of a-axis orientation in YBa2Cu3O7-delta (YBCO) films grown on CeO2-buffered Al2O3 for microwave devices was achieved through a two-step deposition process performed at different temperatures. The growth of a-axis-oriented YBCO film was considered to be due to the impediment of the adatom mobility by the surface roughness of the underlying buffer layer. For the initial layer, the deposition was carried out at a high temperature to increase surface mobility. Next, the deposition was performed at a lower temperature as necessary for optimum c-axis-oriented growth. By this method, only a c-axis-oriented film was obtained. The characteristic surface resistance R-s(T) values for this film were significantly lower than those with mixed c- and a-axis orientations.
  • Strain Induced Synthesis of High Temperature Superconducting Thin films, American Institute of Physics, 512,   2000
  • Buffer layers for a-axis oriented YBa2Cu3O7-d thin films, Abstract of The 1st Asian conference on Crystal Growth and Crystal Technology, 235,   2000
  • Optimum configuration of the antenna to the dielectric resonator to measure the accurate surface resistance of the HTS films, M Inadomaru, D Kousaka, M Kusunoki, M Mukaida, S Ohshima, ADVANCES IN SUPERCONDUCTIVITY XII, 12, 1069, 1071,   2000
    Summary:The configuration of the antenna of the dielectric resonator is investigated to measure the exact surface resistance (R-s) of the high temperature superconductor (HTS) thin films over a wide range of temperature. The sapphire dielectric resonator is operated at 22GHz. The loop-terminated semi-rigid cables are used as the antennas. Using a Cu resonator at room temperature, the circumference length of the loop (L), the distance from the dielectric center to the loop center (d), and the height of the loop plane from the substrate surface (h) were changed. It is found that the smaller loop set at a position halfway to the height of the dielectric rod brought the widest region of d in which exact measurements can be carried out. This result was then applied using a HTS resonator. In order to measure exact Q(u) over a wide temperature region from low temperature to the critical temperature, weak coupling rather becomes a disadvantage. The best position of the antenna can be obtained when insertion loss set around -10dB at minimum temperature of the system.
  • Development of a miniaturized cooling system for HTS antennas, K Ehata, MI Ali, K Sato, M Kusunoki, M Mukaida, S Ohshima, Y Suzuki, K Kanao, ADVANCES IN SUPERCONDUCTIVITY XII, 12, 1066, 1068,   2000
    Summary:A miniaturized cooling system for HTS antennas was developed using a Stirling cryocooler. Its structure and the property of a patch antenna installed in this system are reported. The system showed sufficient cooling ability to cool HTS microwave devices in spite of its portable size and weight. When a patch antenna was installed in this system, radiation from the antenna was focused to the front direction and its gain was enhanced by 11.2 dB. This fact was confirmed not only experimentally but also theoretically.
  • Effect of cavity's loss on the measurement accuracy of the surface resistance by microstripline resonator method, D Okai, M Kusunoki, M Mukaida, S Ohshima, ADVANCES IN SUPERCONDUCTIVITY XII, 12, 1063, 1065,   2000
    Summary:We have examined the effect of the loss in the cavity on the measurement accuracy of surface resistance (Rs) of a superconducting thin film using a microstripline resonator. The Rs of a YBCO thin film was measured as a parameter of the height of the cavity's ceiling. The investigation revealed that the loss in the ceiling affected the measurement accuracy of Rs for a comparatively lower ceiling height. However, when the ceiling's height was sufficiently high, the effect was negligible.
  • Microwave surface resistance of YBa2Cu3Oy thin films prepared by inductive coupled plasma sputtering, T Suzuki, S Sato, M Kusunoki, M Mukaida, S Ohshima, ADVANCES IN SUPERCONDUCTIVITY XII, 12, 1048, 1050,   2000
    Summary:The YBa2Cu3Oy (YBCO) film having low surface resistance (RS) was prepared using an inductive coupled plasma sputtering technique. To increase the low deposition rate, a new self-template method was examined. The YBCO films fabricated on the 21-nm-thick template YBCO layer were c-a ris oriented grain perfectly and successfully grew even at 3 times higher deposition rate. However, the R-s was not low enough, due to the in-plane misaligned grains. Therefore, the BaSnO3 (BSO) buffer was used to obtain perfect in-plane aligned grains. The R-s value of the YBCO/YBCO-template/BSO/MgO film was 0.38 m Omega at 35 K and 1.13 m Omega at 77 K in measurement frequency 22 GHz. The R-s values scaled to 10 GHz were 0.08 m Omega at 35 K and 0.23 m Omega at 77 K, respectively.
  • Effects of cation mixing on the growth of a-axis oriented NdBa2Cu307-δ thin films (共著), Advances In Superconductivity, 12, 957,   2000
  • FABRICATION OF DOUBLE-SIDED YBa2Cu307-δ/BaSnO3 THINFILMS BY LASER ABLATION (共著), Advances In Superconductivity, 12, 924,   2000
  • Fabrication of low Rs YBCO films and its application to patch antennas, S. Ohshima, Y. Takano, M. Mukaida, M. Kusunoki, K. Ehata, K. Chiba, T. Suzuki, M. Inadomaru, Physica C: Superconductivity and its Applications, 341-348, 2565, 2568,   2000 , 10.1016/S0921-4534(00)01365-4
    Summary:We have examined that how to reduce the surface resistance, Rs of YBCO films, and found that control of the in-plane alignment of the YBCO films was very important to realize that. The in-plane alignment of the YBCO films on MgO substrates could be controlled by the BaSnO3(BSO) buffer layers, and self-template method. We also examined YBCO patch antenna and its compact cooling system. The compact cooling system was easy to keep YBCO patch antennas in the superconducting state.
  • Effect of surface impedance on the antenna properties in superconducting microstrip antenna, MI Ali, K Ehata, M Kusunoki, S Ohshima, PHYSICA C, 325, 3-4, 143, 152,   1999 11 , 10.1016/S0921-4534(99)00477-3
    Summary:The complex surface impedance (Z(s)) of a superconductor is comprised of two unequal components, surface resistance (R-s) and surface reactance (X-s). We have investigated the effects of R-s and X-s on the YBa2Cu3O7-x (YBCO) superconducting microstrip antenna properties (resonant frequency, input impedance, and gain) by theoretical analysis and experimentation. The antennas were fabricated from YBCO thin films on (100) MgO single crystal substrate at 11.7 GHz. The investigation of the antenna properties reveals that the X-s of the superconducting thin film mainly influences the antenna resonant frequency (f(r)) and has small influence on the antenna input impedance (R-m). On the other hand, R-s mainly affects the input impedance of the antenna. The antenna gain, and hence the efficiency, is found to be influenced by the film surface resistance. The antennas were characterized in the temperature range of 10-90 K. Possible influences of the substrate dielectric properties (permittivity, epsilon(r) and loss tangent, tan delta) on the antenna properties were also considered in the investigation. (C) 1999 Elsevier Science B.V. All rights reserved.
  • Design, fabrication, and characterization of patch antenna using superconducting thin film, K Ehata, M Kusunoki, S Ohshima, ELECTRONICS AND COMMUNICATIONS IN JAPAN PART II-ELECTRONICS, 82, 11, 59, 69,   1999 11 , 10.1002/(SICI)1520-6432(199911)82:11<59::AID-ECJB6>3.0.CO;2-X
    Summary:The surface resistance of superconductors is smaller than that of normal conductors by several orders of magnitude. Hence, a superconducting microwave device has lower loss and higher performance than a normal conducting one. Since the mobile communication systems have become popular and cryocoolers of small size and light weight have been fabricated in recent years, research activity on superconducting microwave devices has been enhanced. In this paper, the design, fabrication, and characterization of a patch antenna using a high-temperature superconducting thin film are reported. It is demonstrated that the superconducting patch antenna has higher gain than a normal conducting one. The temperature dependence of the resonant frequency, the input resistance, and the power handling properties are also discussed. (C) 1999 Scripta Technica.
  • In-plane orientation control of C-axis oriented YBa2Cu3O7-delta films on MgO substrates by BaSnO3 buffer layers, M Mukaida, Y Takano, K Chiba, T Moriya, M Kusunoki, S Ohshima, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 38, 8B, L926, L928,   1999 08 , 10.1143/JJAP.38.L926
    Summary:A new BaSnO3 buffer layer is proposed for controlling the in-plane orientation of YBa2Cu3O7-delta films grown on MgO substrates. BaSnO3 buffer layers and YBa2Cu3O7-delta films are grown by pulsed laser deposition. 45 degrees grain boundaries in YBa2Cu3O7-delta films grown on MgO (001) substrates, which are fatal defects for microwave device applications, are eliminated using the BaSnO3 buffer layer. YBa2Cu3O7-delta films grown at an optimum growth temperature of 710 degrees C on BaSnO3 buffer layers on MgO (001) substrates show lower surface resistance (R-S) than those on MgO(001)substrates without BaSnO3 buffer layers.
  • In-plane orientation of C-axis oriented YBa2Cu3Ox films on MgO substrates, M Mukaida, Y Takano, K Chiba, M Kusunoki, S Ohshima, JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 38, 4A, 1945, 1948,   1999 04 , 10.1143/JJAP.38.1945
    Summary:The appearance of 45 degrees grain boundaries in c-axis oriented YBa2Cu3Ox films grown by pulsed laser deposition on MgO (001) substrates is discussed. X-ray phi-scan (in-plane orientation) measurements have revealed that YBa2Cu3Ox films grown at around 700 degrees C have Two types of grains with [100](MgO) (-) parallel to [100](YBCO) and [110](MgO) parallel to [100](YBCO) in-plane epitaxial relationships. A plausible growth model is proposed from the viewpoints of lattice matching and ionic adhesive energy. The ratio of 0 degrees and 45 degrees grains is found to be a function of the substrate temperature. By decreasing the substrate temperature, we obtained c-axis oriented YBa2Cu3Ox thin films with only a [100](MgO) parallel to [100](YBCO) in-plane epitaxial relation. We have eliminated the 45 degrees grain boundaries which drastically increase the surface resistance of the YBa2Cu3Ox films for microwave applications.
  • Fabrication and microstructure of all in-plane aligned a-axis oriented superconductor/insulator/superconductor junctions, M Mukaida, M Kusunoki, S Ohshima, JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 38, 3A, 1370, 1374,   1999 03 , 10.1143/JJAP.38.1370
    Summary:All in-plane aligned a-axis oriented YBa2Cu3Ox/Gd2CuO4/YBa2Cu3Ox superconductor/insulator/superconductor (SIS) junction structures are fabricated by a pulsed laser deposition technique and their microstructures are characterized. An insulating barrier of Gd2CuO4 with an atomic graphoepitaxial relation is selected from a lattice-matching point of view for the band c-axes of YBa2Cu3Ox at a deposition temperature of the YBa2Cu3Ox films. Preferred orientations and in-plane alignments of electrodes of YBa2Cu3Ox films and barriers of Gd2CuO4 films are confirmed by X-ray diffraction spectroscopy and an X-ray phi-scan technique. X-ray diffraction measurements revealed that all the YBa2Cu3Ox/Gd2CuO4/YBa2Cu3Ox films are a-axis oriented. The c-axes of the layers are also in-plane aligned.
  • Fabrication of YBCO films and its application to microwave devices, Applied Superconductivity,   1999
  • Fabrication of low surface resistance YBa2Cu3Oy films on MgO substrate by self-template method, Applied Superconductivity, 73,   1999
  • Effect of Substrate Lattice Mismatch on the Crystallographic properties of YBa2Cu3Oy Thin Films for Microwave (共著), Advances In Superconductivity, 11, 1129,   1999
  • Elimination of 45 degree Grain Boundaries in LnBa2Cu30y Thin Films for Microwave Devices on MgO Substrates (共著), Advances In Superconductivity, 11, 1125,   1999
  • New Measurement Technique of the Surface Resistance Rs using the Microstrip Resonator (共著), Advances In Superconductivity, 11, 1259,   1999
  • Design and Fabrication of Cross-coupled Microstrip Bandpath Filters (共著), Advances In Superconductivity, 11, 1255,   1999
  • Influence of the Microstructure of a CeO2 Buffer Layer on the Superconducting Properties of YBa2Cu3Oy on Al2O3 (共著), Advances In Superconductivity, 11, 1109,   1999
  • Growth Manner of c-axis Oriented YBa2Cu30y Thin Films (共著), Advances In Superconductivity, 11, 1019,   1999
  • A new epitaxial BaSn03 buffer layer for YBa2Cu307-8 thin films on Mg0 substrates (共著), 7th International Superconductive Electronics Conference, 7, 266,   1999
  • Effect of the Ce02 buffer layer thickness on the microwave properties of YBCO thin films (共著), 7th International Superconductive Electronics Conference, 7, 263,   1999
  • Design and Fabrication of Narrow-band Compact Configuration Hairpin Filters (共著), 7th International Superconductive Electronics Conference, 7, 70,   1999
  • New Measurement Technique of the Suface Impedance of Superconductors Using the Probe-Coupling Type Micostripline Resonator (共著), ASIA PACIFIC MICROWAVE CONFERENCE, 821,   1999
  • Studies on the surface morphology and orientation of CeO2 films deposited by pulsed laser ablation, KD Develos, N Kusunoki, S Ohshima, JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 37, 11, 6161, 6169,   1998 11 , 10.1143/JJAP.37.6161
    Summary:We studied the surface morphology and orientation of CeO2 films grown by pulsed laser ablation (PLA) on r-cut (1 (1) over bar 02) Al2O3 substrates and evaluated the effects of predeposition annealing conditions of Al2O3 and film thickness of CeO2, The annealing of Al2O3 substrates improves the smoothness of the surface and performing this in high vacuum leads to better crystallinity and orientation of deposited CeO2 films compared to those annealed in oxygen. A critical value of the film thickness was found beyond which the surface roughness increases abruptly. Atomic force microscopy (AFM) study showed that the surface of CeO2 films is characterized by a mazelike pattern. Increasing the film thickness leads to the formation of larger islands which cause the increase in the surface roughness of the films. The areal density and height of these islands increased with film thickness.
  • Investigation of the Uniformity of Both-Side YBCO Thin Films Fabricated by inductive Coupled Plasma Sputtering, Technical Report of ICICE, 98, 222, 25,   1998
  • Examination of the Microstripline Resonator for Measurement of the Magnetic Penetration Depth(共著), Adnances in Superconductivity, 10, 1161,   1998
  • Study on Optimum Configuration of Microstrip Bandpass Filters(共著), Adnances in Superconductivity, 10, 1157,   1998
  • Characterisation of Superconducting Patch Antenna Fabricated by Bothside Superconducting Thin Film(共著), Adnances in Superconductivity, 10, 1153,   1998
  • Preparation of YBa2Cu3Oy thin films using induction-coil-coupled sputtering, M Kusunoki, A Osuka, K Ehata, S Ohshima, H Masumoto, T Hirai, JOURNAL OF THE JAPAN INSTITUTE OF METALS, 61, 9, 951, 955,   1997 09
    Summary:YBa2Cu3Oy (YBCO) superconducting thin films were deposited on MgO single crystals by induction-coil-coupled sputtering. The effects of the induction coil on the qualities of YBCO thin films are examined. Uniformity of film thicknesses below +/-5% was obtained over an area of 40 mm diameter using a 50 mm diameter target by the condition of the substrate-target distance of 90 mm. Even in the area of 60 mm diameter which was wider than that of the target, the uniformity of thickness within +/-17% was obtained. In order to clarify the effects of the induction-coil, we studied the dependence of the critical temperature (T-c) and the full width at half maximum (FWHM) of the films on the applying power of coil. T-c and FWHM showed optimum Values at the applying coil power of 70W. It is confirmed from these results that the induction-coil operated effectively to fabricate high quality films. The epitaxial relations of YBCO films on MgO single crystal substrates were examined by X-ray pole figure measurements. Basically film of YBCO was aligned with the c-axis perpendicular to the substrate surface. The film deposited at the coil power of 70W exhibited well single-oriented grains with the a- or b-axis parallel to the a-axis of MgO. However, films deposited at the applying coil power of 0W contained grains with two different orientations which were rotated by 45 degrees. Scanning electron microscopy (SEM) of the film surface showed the films to consist of a smooth background surface and a distribution of particles. Energy dispersive X-ray analysis (EDAX) measurements showed that the Ba concentration was larger than that of exact stoichiometric composition. Auger electron spectroscopy (AES) revealed that the elements contained in the particles were richer in Ba than in the smooth background surface. The BaCuO2 particles seemed to precipitate on the surface of the film.
  • New vortex flow transistors made of YBa2Cu3Oy thin films, A Fujimaki, M Kusunoki, M Kito, S Yoshida, H Andoh, H Hayakawa, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 7, 2, 2399, 2402,   1997 06 , 10.1109/77.621723
    Summary:We have investigated the performances of several types of vortex flow transistors including nanobridge vortex flow transistors (NBVFTs) based on a parallel array of nanobridges, planar Josephson vortex flow transistors (planar JVFTs) based on a parallel array of grain boundary Josephson junctions, and new JVFTs with a stacked structure (stacked JVFTs), Considering the integration and the reduction of the L/R time constant, the areas of the transistors were restricted to less than 350 mu m(2). A NBVFT showed a flux-to-voltage transfer function of 2.6 mV/Phi(0), which was one order of magnitude larger than that of the other transistors, In contrast, the NBVFTs showed a very small current gain due to a large kinetic inductance of a nanobridge, while the NBVFT had the smallest area among the three, A planar JVFT with asymmetric geometry was easy to fabricate and showed a current gain of 2.2 at 4.2 K, However, the planar JVFT requires a large area, leading to a long response time other than the internal delay time, A stacked JVFT also showed a current gain of 2.5 at 4.2 K, A layered structure yielded a strong coupling between the body of the JVFT and the control line, Due to this strong coupling, the response ti me of the stacked JVFT was considerably improved compared to that of the planar JVFT.
  • The Gain and Directivity of a Superconducting Patch Antenna (共著), 6th International Superconductive Electronics Conference, 6, 287,   1997
  • High-Temperature Superconducting Microwave Applications, Antenna and Filter (共著), HTSED Workshop: 97, 77,   1997
  • Effects of Induction coil to YBCO Thin Films in Sputtering, Technical Report of ICICE, 97, 24, 43,   1997
  • Design and Characterisation of Superconducting Patch Antenna(共著), Adnances in Superconductivity, 9, 1273,   1997
  • Design and Fabrication of Metal and Superconducting Meander-Line Antennas(共著), Adnances in Superconductivity, 9, 1269,   1997
  • Variations of order parameter and bias current distribution with time in thin film superconducting lines, H Andoh, M Kito, M Kusunoki, A Fujimaki, H Hayakawa, SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 9, 4A, A55, A58,   1996 04 , 10.1088/0953-2048/9/4A/015
    Summary:We study variations of the older parameter and the vector potential with time using the rescaled time-dependent Ginzburg-Landau (TDGL) equation. Computer simulations for several conditions are performed to discuss the bias current distribution and the time necessary for the transition from the normal state to the superconducting state for the superconducting narrow line. As a result, we have found that the time necessary for the transition from the normal state to the superconducting state is an important factor to explain the I-V characteristics due to the vortex motion in superconducting narrow lines.
  • Vortex Flow Transistor with Nano-Structures(共著), Adnances in Superconductivity, 8, 1193,   1996
  • Vortex Flow Transistors Based on YBa2Cu3Ox Films(共著), IEICE Transactions on Electronics,   1996
  • COMPUTER-SIMULATIONS OF DYNAMICS OF VORTEX LINES IN SUPERCONDUCTING FLUX-FLOW TRANSISTORS, H ANDOH, M KUSUNOKI, A FUJIMAKI, H HAYAKAWA, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 5, 2, 3377, 3380,   1995 06 , 10.1109/77.403316
    Summary:We study the dynamics of vortex lines in superconducting flux flow transistors (SFFT's) made of High T-c superconductors, YBa2Cu3Ox. By computer simulations we have found that the density of vortex lines in SFFT's has close relation to device I-V characteristics rather than the velocity of vortex lines and that we have to increase the density of vortex lines to get ones with available gain. To be more concrete, in order to increase the density of vortex lines we have to lower surface barriers at the edge of weak-links and heighten the magnetic field near the edge of weak links. Especially, it is very important to heighten the magnetic field at the both sides of a link in a SFFT. Under the control of the control current, vortex lines in a SFFT are driven by the transport current (the bias current) mainly, but it is important to think the other forces such as the force by screening current, the force induced by the other vortices and the force induced by the image vortices. Based on the local stochastic equation of motion for vortex lines, computer simulations for some conditions are performed to discuss the dynamic behavior of vortex lines in a SFFT. We report the effect of the external magnetic field induced by the control current on the motion of vortex lines in SFFT's.
  • SUPERCONDUCTING FLUX-FLOW TRANSISTORS WITH SUBMICROMETER STRUCTURES, M KUSUNOKI, H AKAIKE, A FUJIMAKI, H HAYAKAWA, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 5, 2, 3389, 3392,   1995 06 , 10.1109/77.403319
    Summary:A miniaturization of high critical temperature (T-c) superconducting flux flow transistor (SFFT) was studied. The weak link width in the direction of the vortex flow was varied from 5 mu m to 10 mu m. The weak link length in the direction of bias current flow was fixed to 5 mu m. An increase in the gain was observed as the weak link width decreased. A control line was placed close to the weak link in the distance of 0.5 mu m to compensate for a decrease of magnetic sensitivity due to the miniaturization. We also improved the characteristics of the SFFT by forming a corrugated structure, which is named corrugation flux flow transistor (CFFT). A submicron patterning of YBa2Cu3Oy (YBCO) thin film was performed using focused ion beam lithography. Furthermore, we demonstrated a micro flux flow transistor (MFFT) consisting of a single bridge. The MFFT also operated as well as the CFFT.
  • SYSTEMATIC MEASUREMENT OF CRITICAL-CURRENT DENSITY FOR NARROW YBA2CU3OY LINES, M KUSUNOKI, H ANDOH, A FUJIMAKI, H HAYAKAWA, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 34, 5B, L612, L614,   1995 05 , 10.1143/jjap.34.L612
    Summary:Critical current densities (J(c)'s) of submicron YBa2Cu3Oy (YBCO) lines were studied. Increase in J(c) with reduction of line width (to) was observed reproducibly, when temperature rise of the substrate is suppressed during plasma etching of YBCO. Intermittent etching and liquid-nitrogen cooling were very effective in obtaining sufficient cooling. Temperature dependence of current-voltage characteristics was interpreted in terms of thermally activated vortex motion. This result indicated the existence of a potential barrier to vortex motion. In particular, the surface barrier played an important role in determining J(c) in the submicron lines. Furthermore, the dependence of J(c) on w was strongly dependent on the current concentration to the edges due to Meissner effect.
  • NUMERICAL-ANALYSIS OF INFLUENCE OF SURFACE-BARRIER ON CURRENT-VOLTAGE CHARACTERISTICS FOR NARROW SUPERCONDUCTING LINES, H ANDOH, M KUSUNOKI, A FUJIMAKI, H HAYAKAWA, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 34, 4A, L408, L411,   1995 04 , 10.1143/jjap.34.L408
    Summary:The variation of critical current density with reduced line width and the temperature dependence of voltage for superconducting narrow lines are calculated theoretically. Critical currents of superconducting narrow lines increase progressively as the lines become narrower. The surface barriers for superconducting narrow lines are discussed in order to understand the progressive increase in critical currents of superconducting narrow lines. Furthermore, the thermally activated flux lines jumping over the surface barrier are discussed ill order to understand the temperature dependence of voltage for superconducting narrow lines. The results of calculation using the surface barriers agree well with experimental results.
  • Superconducting Transistors Composed of Nanobridges(共著), International Workshop on Novel Terahertz Technology, 39,   1995
  • SUBMICRON PATTERNING TECHNIQUE FOR YBA2CU3OY FILMS USING FOCUSED ION-BEAM LITHOGRAPHY, M KUSUNOKI, H AKAIKE, A FUJIMAKI, H HAYAKAWA, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 33, 8A, L1124, L1127,   1994 08 , 10.1143/jjap.33.L1124
    Summary:We have developed a new technique for YBa2Cu3Oy (YBCO) submicron structure formation. Nb films serving as etching masks are patterned into line structures with submicron dimensions, using focused ion beam lithography and a vertical etching technique of the Nb films. Then the mask patterns are accurately transferred to the YBCO film in an electron cyclotron resonance plasma etcher. Fine lines are successfully patterned down to 180 nm of the linewidth without any degradation of superconductivity, as long as a temperature rise is suppressed during plasma etching. The temperature dependence of the current-voltage characteristics can be interpreted in terms of the thermally activated vortex motion.
  • Abrikosov Vortex Flow Device with Nano Bridges, Technical Report of ICICE, 95, 338, 13,   1994
  • Submicron Patterning Technique of Oxide Superconducting Thin Films Using Focused Ion Beam, Technical Report of ICICE, 94, 8, 47,   1994
  • A Novel Technique for YBa2Cu307-x Submicrometer Structure Formation Using Focused lon Beam Lithography(共著), International Workshop on HTS Electron Device, 206,   1994
  • HIGH-QUALITY NB/ALOX-AL/NB JOSEPHSON-JUNCTIONS WITH GAP VOLTAGE OF 2.95-MV, M KUSUNOKI, H YAMAMORI, A FUJIMAKI, Y TAKAI, H HAYAKAWA, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 32, 11A, L1609, L1611,   1993 11
    Summary:The dependence of the gap voltage on impurities in Nb films is studied. The gap voltage is determined by the number of impurities included in the films. The impurities arise from the residual gas in the sputtering chamber before the deposition of Nb films. By reducing the impurities in the films, we obtain high-quality Nb/AlO(x)-Al/Nb Josephson junctions having the gap voltage of 2.95 mV which is close to that estimated from the energy gap of Nb bulk at 4.2 K. In addition, the use of a thin Al layer is also an important factor in obtaining excellent current-voltage characteristics.

Research Grants & Projects

  • Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(C)), Elemental technologies to develop single photon detectors having high temperature, high speed and high sensitivity operation, We studied elemental technologies to develop HTS(high temperature superconducting) nano-wire as a key device "single photon detector" for the quantum cryptographic communication. Experiments were carried out using YBa_2Cu_3O_y(YBCO). It was shown that a 200-nm-wide and 25-mm-long nano-wire could be constructed in a 100μm×100μm square by using a 250-turns-meandering configuration. We examined how to suppress superconductivity degradation in the nano-wire during plasma etching processes. Liquid N2 cooling to a sample stage was effective to prevent the degradation from ion bombardments of plasma etching. As a result, superconducting current was observed for a 200-nm-wide and 1-μm-long nano-wire. We also investigated lattice mismatching at a hetero-epitaxial surface between YBCO and single crystal substrate. Then, YBCO thin film with only 20 nm thickness showed critical temperature(T_c) over 80 K. On the other hand, a T_c dependence on the YBCO thickness was examined from 80 nm to 10 nm. It produced a possibility to realize very thin HTS nano-wire with effective thickness less than 10 nm.
  • Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(C)), Development of artificial articular cartilage with a region selective osteoconduction using a nanotechnology, We studied on a partial repalcementable artificial articular cartilage, composed of polyvinyl alcohol hydrogel(PVM-H), or a composite osteo-chondral device(COD). The COD is able to replace the local lesion of natural articular cartilage. A long-term fixation technique between the COD and osseous tissues was studied. The COD surface must have bio-inert function. On the other hand, in the boundary between the COD and living bone, the osteoconductive adhesion is necessary. That is, the partial selective adhesion function(PSAF) was investigated. We have materialized PSAF in the COD by integration the PVA-H and several kinds of apatite thin film. Biocompatibility, mechanical strength and material property of both PVA-Hs and the thin films were studied.
  • Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(B)), Implant treatment in next generation by preparation technology of nano apatite thin film, In this study, we have aimed to develop following two types of medical/dental devices that are effective for the implant treatment in next generation. One is the freestanding membrane of biological apatite (BAp) that can be applied to the guided bone regeneration (GBR) method with the suitable bioactivity for affected region. The other is the implant in that two functions of biostability and biocompatibility were harmonized by the bilayered structure of BAp/hydroxyapatite (HAp). Both devices were prepared by using a pulsed laser deposition (PLD) technique for a thin film and bilayer formation technology. The prepared thin films and the bilayer were evaluated on chemical, physical and molecular biology. Clinical simulation test of BApGBR membrane and the function harmonized implant was carried out by using the mandibular alveolar bone and the femoral defect model of dog. As the results, the usefulness of our devices was confirmed as an implant treatment in next generation.
  • Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(C)), Development of optical output interface for single flux quantum circuits
  • Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(C)), Development of dental biosensor using nano-technology, This study examined in vitro cytocompatibility and in situ measurements of protein adsorption using the quartz crystal microbalance (QCM) to thin hydroxyl apatite (HA) and natural apatite (NA) films deposited by laser ablation, in order to investigate better surface conformation of titanium dental implants.Thin HA and NA films on titanium discs and the QCM sensor were made using an ArF excimer laser operating at a repletion rate of 10 Hz and annealed by heat radiation at 360℃ for 1 h. After annealing, the chemical composition of the HA film was characterized by X-ray diffraction (XRD). The surface conformation of the HA and NA films on the titanium disc was observed by energy dispersive analysis (EDX). Subsequently, primary mouse osteoblast (PMO) was cultured on the discs with or without film. Cell proliferation and differentiation were investigated by DNA assay, alkaline phosphatase activity (ALP) assay and osteocalcin production (OCN) assay. The affinity between the films and several proteins in the phosphate buffer was monitored using a 27-Hz QCM.XRD showed crystalline HA and NA films on the Ti and QCM sensor under the annealing conditions. EDX showed peaks of Na and Mg in addition to Ca and P for the NA film. PMO grew faster and had higher ALP and OCN when grown in NA films than on HA films or Ti. The absorbed amount of several proteins on the QCM sensor with NA film was significantly higher than that of HA film and non-film.Based on these findings, NA film deposited by laser ablation shows excellent cytocompatibility with cells owing to the superior absorption of protein. The results obtained could lead to the development of more effective dental implants.
  • Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(C)), Studies on IT-based exercise prescription in community-dwelling older adults., The purpose of this study was to guide older adults living in remote communities to improve their functional independence as well as the overall fitness by using the information technology (IT) based exercise prescription. To attain these goals, we increased daily physical activity, and developed well-rounded exercises. (aerobic + resistance + balance + flexibility) and hydraulic resistance machine-based resistance training program suitable for community dwelling older adults. We also developed immediate data feedback system for the participants that helps them to realize their instant daily physical activity level using accelerometer device even before starting of the active program. The data feedback system is operated on a computer using a touch panel menu. After inputting the participant's accelerometer data into the computer, the daily physical activity (walking steps and intensity) level of the participant is instantly estimated and the result is expressed in simple graph. The graph and information is easy to understand by an older adult. Although the touch panel system is very easy to operate, still there are some limitations of the system, and further studies are needed to overcome these limitations. We developed an exercise menu for older adults based on the outcome of our previous exercise interventions such as aerobic exercises, resistance exercises, flexibility exercises, and balance exercises. These exercises were conducted as individual program, as well as in combined forms. Due to shortage of budget and due to limitation of time, we could not transform this menu to IT based system yet. Our future plan is to develop an IT system that will include an exercise menu, and the immediate data feedback system in one package. Adherence to exercise is essential to keep holding of the attained benefit from an exercise program. To reach this goal, both the community-based and home-based exercise programs are essential as seasonal environmental variation and individual fitness variation play major role in adherence to exercises. Thus the training menu should include exercises that could be performed individually at home, as well as can be performed in groups at local community centers. We already have exercise menu, however we need to convert this menu into an IT-based menu. We hope to do this in our future work.
  • Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(国際学術研究), Joint study on design and fabrication of HTS antenna and filter, We could obtain some new results of HTS filters and antennas by the joint study between Yamagata University and Wuppertal University, The results are as follows.(1) 1997Dr.Kusunoki visited the laboratory of Prof.Chaloupka in Wuppertal University and researched about design of superconducting filters. Our group had investigated the formation process of YBCO thin films and measured its superconducting properties. We also designed superconducting antenna and filters.Prof.Chaloupka's group investigated superconducting filters.(2) 1998Prof.Chaloupka stayed our laboratory for about three weeks and coworked with us to develop superconducting filters. During his stay in our laboratory the symposium of HTS filters was held in Yamagata University. We designed cross-coupled superconducting filters which had narrow bandwidth, sharp skirt properties and small insertion loss.The joint work between Yamagata University (Ohshima's laboratory) and Wuppertal University (Chaloupka's laboratory) will be continued in 1999.
  • Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(一般研究(B), 基盤研究(B)), Study on miniaturized super-gain superconducting antenna, We have investigated the super-gain superconducting antenna, design, fabrication and characterization. These experimental results are as follows ;(1) Establishment of the design method of patch antenna operated at microwave region.We designed the patch antenna with a resonance frequency of 5 GHz. We could obtain the Cu patch antenna with input impedance of approximately 50 ohms and the resonance frequency of 50 ohms.(2) Fabrication and characterization of superconducting patch antenna.We fabricated the superconducting patch antenna using YBCO thin films. The input impedance of these antenna was slightly larger than that of designed value, 50 ohms. The difference between experimental results and design value was caused by the surface resistance of superconducting film. The gain of superconducting patch antenna was 2-4 dB higher than that of Au film antenna(3) Preparation of YBCO thin films for superconducting antenna using a plasma coupled magnetron sputtering.We fabricated the YBCO thin films for superconducting antenna by a plasma coupled magnetron sputtering. The Tc and Jc of these films obtained were 87K and 4x10^6A/cm^2 at 77K,respectively(4) Study on superconducting patch array antenna.We designed and fabricated the superconducting two and four elements array antennas. The antennas were characterized by resonance frequency, input impedance and gain measurements. The gain of superconducting array antenna was 3.2 dB higher than that of cu-array antenna with same geometry.
  • Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(A)), Study on sub-millimeter wave superconducting array antenna, We have investigated the sub-millimeter wave superconducting array antenna, design, fabrication and characterization. These experimental results are as follows ;(1) Establishment of the design method of patch antenna operated at microwave region.We designed the patch antenna with a resonance frequency of 5 GHz and an input impedance of 50 ohms by the transmission line model and a Sonnet Software. In order to check the validity of the transmission line model, we first fabricated the Cu patch antenna, We could obtain the Cu patch antenna with input impedance of approximately 50 ohms and the resonance frequency of 50 ohms.(2) Fabrication and characterization of superconducting patch antenna.We fabricated the superconducting patch antenna using YBCO thin films. The input impedance of these antenna was slightly larger than that of designed value, 50 ohms. The gain of superconducting patch antenna was 2-4 dB higher than that of Au film antenna.(3) Preparation of YBCO thin film for microwave applications by a plasma coupled magnetron sputtering.We fabricated the YBCO thin films for superconducting antenna by a plasma coupled magnetron sputtering. The Tc and Jc of these films obtained were 87K and 4 x 10^6A/cm^2 at 77K,respectively.(4) Study on a log-periodic antenna operated in millimeter and sub-millimeter wave regionWe designed and fabricated the log-periodic antenna for millimeter and sub-millimeter weve region. We confirmed that the antenna was operated up to 40 GHz. The gain was approximately the same with that of a patch antenna.
  • Fabrication of high quality superconducting thin films
  • microwave applications of high-Tc swperconducting thin films
  • Superconducting Electronics