Hiromasa Shimizu

Profile Information

Affiliation: Professor, Institute of Engineering, Division of Advanced Electrical and Electronics Engineering, Tokyo University of Agriculture and Technology

Degree: Fabrication and magneto-optical properties of semiconductor / magnetic hybrid structures and their a(The University of Tokyo)

Researcher number: 50345170
J-GLOBAL ID: 200901050147541932
researchmap Member ID: 1000292482

External link: http://web.tuat.ac.jp/~h-shmz/lab_index_j.htm

Research Interests

Sensors, Optoelectronics, Photonic integrated circuit, Magneto-optics, Lightwave analysis, Chatacterization and Analysis of Environment

Research Areas

Research History

Apr, 2022 - Present

Professor, Institute of Engineering, Tokyo University of Agriculture and Technology
Apr, 2011 - Mar, 2022

Associate Professor, Institute of Engineering, Tokyo University of Agriculture and Technology
Apr, 2007 - Mar, 2011

Associate Professor, Tokyo University of Agriculture and Technology
Jan, 2007 - Mar, 2007

Assistant professor, Tokyo University of Agriculture and Technology
Aug, 2002 - Dec, 2006

Research Associate, Research Center for Advanced Science and Technology, The University of Tokyo, -
Apr, 2002 - Jul, 2002

Research Associate, Department of Electronic Enigeering, The University of Tokyo, -
Jan, 2000 - Mar, 2002

Research Fellowship for Young Scientists, Japan Society for the Promotion of Science

Education

Apr, 1999 - Mar, 2002

Department of Electronic Engineering, Graduate School, Faculty of Engineering, The University of Tokyo
Apr, 1997 - Mar, 1999

Department of Electronic Engineering, Graduate School, Faculty of Engineering, The University of Tokyo
Apr, 1993 - Mar, 1997

Department of Electronic Engineering, Faculty of Engineering, The University of Tokyo

Committee Memberships

Jul, 2022 - Present

Associate Editor, the Institute of Electronics, Information and Communication Engineers
Jun, 2017 - May, 2019

Manager of technical liaison issues, IEICE Electronics Society
Jun, 2017 - May, 2019

Director, Technical Liaison, Electronics Society, Institute of Electronics, Information and Communication Engineers
Mar, 2019

Professional group of Spintronics, The Japan Society of Applied Physics
Jan, 2009 - Mar, 2010

Future Vision Study Working Group, Magnetic Spintronics Cluster, The Japan Society of Applied Physics
Apr, 2007 - Mar, 2009

Investigating R&D Committee on Industrial Applications of High Power Semiconductor LDs, 電気学会

Awards

Sep, 2005

2005 JJAP Award for the most promising young scientist, First Demonstration of TE Mode Nonreciprocal Propagation in an InGaAsP/InP Active Waveguide for an Integratable Optical Isolator, Japan Society of Applied Physics

Hiromasa Shimizu
Jan, 2005

Best Paper Nominations (Ribbon Awards), 2004 Fall meeting of Material Research Society, Material Research Society

Hiromasa SHIMIZU, Yoshiaki NAKANO
Sep, 2001

Magnetic Society of Japan, Young Scientist Award 2001, Magnetic Society of Japan

Hiromasa SHIMIZU
Nov, 2000

The 9th Young Scientist Award for the Presentation of an Excellent Paper at the 2000 JSAP, the 61th Autumn Meeting, Japan Society of Applied Physics

Hiromasa SHIMIZU

Papers

Improvement of photothermal heating efficiency of Si plasmonic waveguide heaters with ring resonators

Hiromasa Shimizu, Kota Shinohara, Masahiko Hasumi

Japanese Journal of Applied Physics, 63(5), May 1, 2024
Quantification of 288 K local photothermal heating and miniaturization in Si plasmonic waveguides integrated with resonators

Nana Ota, Kota Shinohara, Masahiko Hasumi, Hiromasa Shimizu

Japanese Journal of Applied Physics, 62(4), Apr 1, 2023
Magneto-Optics Effects: New Trends and Future Prospects for Technological Developments

Conrad Rizal, Hiromasa Shimizu, Jorge Ricardo Mejia-Salazar

MAGNETOCHEMISTRY, 8(9), Sep, 2022
Magnetically switchable semiconductor microring laser with TE mode waveguide optical isolator

Reo Oshikiri, Yuka Kobayashi, Hiromasa Shimizu

Conference Digest - IEEE International Semiconductor Laser Conference, 2022-October, 2022
Physical Sensors: Optical Sensors

Hiromasa Shimizu

Encyclopedia of Sensors and Biosensors: Volume 1-4, First Edition, 1-4 34-48, Jan 1, 2022
221 K Local Photothermal Heating in a Si Plasmonic Waveguide Loaded with a Co Thin Film

Nana Ota, Tomohiro Miyauchi, Hiromasa Shimizu

SENSORS, 21(19), Oct, 2021
Modulation of surface plasmon resonance by magnetization reversal in Au/Fe/Au trilayer and wedge structure for achieving higher refractive index sensitivity

Shogo Suzuki, Takumi Maeda, Takahiro Ogura, Shoma Suzuki, Terunori Kaihara, Hiromasa Shimizu

JAPANESE JOURNAL OF APPLIED PHYSICS, 60(SB), May, 2021
36.6 dB/mm Extinction Ratio in TE Mode Semiconductor Optical Isolators with Co

Reo Oshikiri, Yuka Kobayashi, Satoshi Nishiyama, Hromasa Shimizu

26th Microoptics Conference, MOC 2021, 2021
Enhancing the Figure of Merit in Surface Plasmon Resonance Sensors with a Wedge-Shape Au Thin Film

Takahiro Ogura, Takumi Maeda, Shogo Suzuki, Hiromasa Shimizu

26th Microoptics Conference, MOC 2021, 2021
Fe thicknesses dependence of attenuated total reflection response in magnetoplasmonic double dielectric structures: angular versus wavelength interrogation

Kaihara Terunori, Shimodaira Takahiro, Suzuki Shogo, Cebollada Alfonso, Armelles Gaspar, Shimizu Hiromasa

JAPANESE JOURNAL OF APPLIED PHYSICS, 58(12), Dec 1, 2019 Peer-reviewed
CO<inf>2</inf> Detection with Si Slot Waveguide Ring Resonators toward On-chip Specific Gas Sensing

Y. Tomono, H. Hoshi, H. Shimizu

2019 Conference on Lasers and Electro-Optics, CLEO 2019 - Proceedings, Part F127-CLEO_AT 2019, May, 2019
Surface plasmon resonance transducers with membrane structure toward gas-sensing applications

Takahiro Shimodaira, Shogo Suzuki, Yoshiki Aizawa, Yasufumi Iimura, Hiromasa Shimizu

Proc. SPIE 10926, Quantum Sensing and Nano Electronics and Photonics XVI, 1092628, 10926 1092628-1-1092628-6, Feb 1, 2019 Peer-reviewed
High Q Si Slot Waveguide Ring Resonators for Gas Sensing Application

Y. Tomono, H. Shimizu

2018 Conference on Lasers and Electro-Optics, CLEO 2018 - Proceedings, Part F92-CLEO_AT 2018, Aug 6, 2018
Plasmonic isolator for photonic integrated circuits

Hiromasa Shimizu, Vadym Zayets

MRS Bulletin, 43(6) 425-429, Jun 1, 2018 Peer-reviewedInvited
Optimization of figure of merit in magnetoplasmonic waveguides with Fe/Au multilayer for optical isolator based on nonreciprocal coupling on Si waveguides

Hiromasa Shimizu, Takahiro Shimodaira

Japanese Journal of Applied Physics, 57(4) 04FN07, Apr 1, 2018 Peer-reviewed
Research on Novel Magnetization Reversal Method of Magnetic Garnet Thin Film and Application to Spatial Light Modulators

Hiromasa SHIMIZU

技術情報誌TELECOM FRONTIER, 97, Nov, 2017
Nonreciprocal dielectric-loaded plasmonic waveguides using magneto-optical effect of Fe

Terunori Kaihara, Hiromasa Shimizu

OPTICS EXPRESS, 25(2) 730-748, Jan, 2017 Peer-reviewed
Preparation of Bi2Gd1Fe5O12 magnetic garnet films showing Faraday rotation of 36.3 deg./mu m on glass substrates by metal organic decomposition method

Danish A. Wahid, Toshiyuki Morioka, Hiromasa Shimizu

IEICE ELECTRONICS EXPRESS, 13(22) 20161011-1~12, Nov, 2016 Peer-reviewed
Magnetic field control and wavelength tunability of SPP excitations using Al2O3/SiO2/Fe structures

Terunori Kaihara, Hiromasa Shimizu, Alfonso Cebollada, Gaspar Armelles

APPLIED PHYSICS LETTERS, 109(11) 111102, Sep, 2016 Peer-reviewed
Preparation and Characterization of Bi substituted gadolinium iron garnet BixGd3-xFe5O12 films with x = 1 to 2.5 by Enhanced Metal Organic Decomposition method

D. A. Wahid, J. Sato, M. Hosoda, H. Shimizu

Journal of the Magnetics Society of Japan, 40(4) 107-114, Jul, 2016

Misc.

171

Detection of volatile organic compound by the Surface Plasmon Resonance sensors with wedge-shaped Au thin film

Hiromasa SHIMIZU

Agricultural biotechnology, 6(6) 552-557, Jun, 2022
Characterization of Round Trip Loss and Resonance of InP semiconductor ring resonators

Kawarai Canon, Nishiyama Satoshi, Kobayashi Yuka, Oshikiri Reo, Shimizu Satoshi, Shimizu Hiromasa

JSAP Annual Meetings Extended Abstracts, 2021.1 1102-1102, Feb 26, 2021
Fabrication of Wedge-shape Surface Plasmon Resonance Sensor with Fe and Characterization of Magnetic Modulation of the Reflectivity

Ogura Takahiro, Maeda Takumi, Suzuki Shoma, Shimizu Hiromasa

JSAP Annual Meetings Extended Abstracts, 2021.1 1017-1017, Feb 26, 2021
Fabrication of Wedge-shape Surface Plasmon Resonance Sensor with Co and Characterization of Magnetic Modulation of the Reflectivity

Suzuki Shoma, Hiromasa Shimizu, Takumi Maeda, Takahiro Ogura

JSAP Annual Meetings Extended Abstracts, 2021.1 1015-1015, Feb 26, 2021
Evaluation of Propagation Loss and Extinction Ratio of Semiconductor Optical Isolators with Co

Oshikiri Reo, Kobayashi Yuka, Nishiyama Satoshi, Shimizu Hiromasa

JSAP Annual Meetings Extended Abstracts, 2021.1 1103-1103, Feb 26, 2021
Evaluation of Temperature Rise in Si Plasmonic Waveguide Heaters Loaded with Metal Thin Film

Ota Nana, Miyauchi Tomohiro, Shimizu Hiromasa

JSAP Annual Meetings Extended Abstracts, 2021.1 1119-1119, Feb 26, 2021
Evaluation of Ethanol Gas Concentration by Si Slot Waveguide Sensors and Enhanced Sensitivity by DNA decoration

Yamada Takafumi, Hoshi Hyato, Ito Kohei, Ikebukuro Kazunori, Shimizu Hiromasa

JSAP Annual Meetings Extended Abstracts, 2020.2 605-605, Aug 26, 2020
Fabrication and Evaluation of Si Plasmonic Waveguide heater with Metal

Miyauchi Tomohiro, Yamada Koji, Shimizu Hiromasa, Namiki Mitaro

JSAP Annual Meetings Extended Abstracts, 2020.2 601-601, Aug 26, 2020
Characterization of the Adsorption Property of Ethanol molecules to Solid-State DNA by Surface Plasmon Resonance Sensors

Maeda Takumi, Ito Kohei, Ikebukuro Kazunori, Shimizu Hiromasa

JSAP Annual Meetings Extended Abstracts, 2020.2 507-507, Aug 26, 2020
Fabrication InP semiconductor ring lasers toward integration with TE mode semiconductor optical isolator

Nishiyama Satoshi, Kobayashi Yuka, Komagome Hiroki, Shimizu Satoshi, Shimizu Hiromasa

JSAP Annual Meetings Extended Abstracts, 2020.2 564-564, Aug 26, 2020
Fabrication and Characterization of InP Ring Resonators Integrated with TE mode Semiconductor Optical Isolators

Kobayashi Yuka, Nishiyama Satoshi, Shimizu Satoshi, Shimizu Hiromasa

JSAP Annual Meetings Extended Abstracts, 2020.2 565-565, Aug 26, 2020
Fabrication of Electrodes on InP TE mode semiconductor Opical Isolators by Electron-beam Lithography

Nishiyama Satoshi, Kobayashi Yuka, Komagome Hiroki, Ara Yuya, Shimizu Hiromasa

JSAP Annual Meetings Extended Abstracts, 2020.1 1151-1151, Feb 28, 2020
Fabrication of InP ring resonator and improvement of the coupling length

Kobayashi Yuka, Nishiyama Satoshi, Komagome Hiroki, Shimizu Satoshi, Shimizu Hiromasa

JSAP Annual Meetings Extended Abstracts, 2020.1 1152-1152, Feb 28, 2020
Deposition of Ce:YIG with YIG buffer layer on SOI substrates and their propagation characteristics

Yoshida Shuhei, Uekita Takahiro, Shimizu Hiromasa

JSAP Annual Meetings Extended Abstracts, 2020.1 1180-1180, Feb 28, 2020
Characterization of Ethanol Detection of Surface Plasmon Resonance Sensors with DNA

Maeda Takumi, Suzuki Shogo, Shimizu Hiromasa

JSAP Annual Meetings Extended Abstracts, 2020.1 1047-1047, Feb 28, 2020
Characterization of polycrystalline YIG thin films on Si Substrates by RF Magnetron Sputtering and Annealing

Yoshida Shuhei, Uekita Takahiro, Shimizu Hiromasa

JSAP Annual Meetings Extended Abstracts, 2019.2 1221-1221, Sep 4, 2019
Characterization of Magnetic Modulation of Surface Plasmon Resonance on Al₂O₃/SiO₂/Fe/Au Structures

Suzuki Shogo, Shimodaira Takahiro, Kaihara Terunori, Cebollada Alfonso, Armelles Gaspar, Shimizu Hiromasa

JSAP Annual Meetings Extended Abstracts, 2019.1 1062-1062, Feb 25, 2019
Fabrication of InP ring resonator using microloading effect

Nishiyama Satoshi, Komagome Hiroki, Ara Yuya, Shimizu Hiromasa, Shimizu Satoshi

JSAP Annual Meetings Extended Abstracts, 2019.1 1155-1155, Feb 25, 2019
Study on Sensitivity Improvement of Si Slot Ring Resonators for Gas Sensing applications

Hoshi Hayato, Tomono Yuki, Simizu Hiromasa

JSAP Annual Meetings Extended Abstracts, 2019.1 1174-1174, Feb 25, 2019
Plasmon-enhanced hot electron emission at thin-TiO₂/Au junction

Kaihara Terunori, Cebollada Alfonso, Armelles Gaspar, Shimizu Hiromasa

JSAP Annual Meetings Extended Abstracts, 2019.1 1200-1200, Feb 25, 2019

Books and Other Publications

Advances in Optical and Photonic Devices

Hiromasa SHIMIZU (Role: Joint author)

INTECH, Jan, 2010 (ISBN: 9789537619763)
スピントロニクスの基礎と材料・応用技術の最前線第33章光スピントロニクスデバイス～集積光非相反デバイス～

高梨弘毅監修, 人による共著 (Role: Joint author)

シーエムシー出版, Jul, 2009 (ISBN: 9784781301051)
Fabrication a TE Mode InGaAsP Active Waveguide Optical Isolator Based on the Nonreciprocal Loss Shift (by H. Shimizu and Y. Nakano)

H. Shimizu, Y. Nakano (Role: Joint author)

Feb, 2005

Presentations

195

Deposition of Ce:YIG with YIG buffer layer on SOI substrates and their propagation

Shuhei Yoshida, Takahiro Uekita, Hiromasa Shimizu

The 67th. JSAP Spring Meeting, 2020, Mar 14, 2020, 応用物理学会
Characterization of Ethanol Detection of Surface Plasmon Resonance Sensors with DNA

Takumi Maeda, Shogo Suzuki, Hiromasa Shimizu

The 67th. JSAP Spring Meeting, 2020, Mar 13, 2020, 応用物理学会
Fabrication of Electrodes on InP TE mode semiconductor Optical Isolators by Electron-beam

S. Nishiyama, Y. Kobayashi, H. Komagome, Y. Ara, H. Shimizu

The 67th. JSAP Spring Meeting, 2020, Mar 12, 2020, 応用物理学会
Fabrication of InP ring resonator and improvement of the coupling length

Y. Kobayashi, S. Nishiyama, H. Komagome, S. Shimizu, H. Shimizu

The 67th. JSAP Spring Meeting, 2020, Mar 12, 2020, 応用物理学会
Fabrication and characterization of Ce-substituted YIG thin films on Si substrate by sputtering with YIG buffer layer by MOD method

T. Uekita, H. Shimizu

The 80th. Japan Society of Applied Physics, Autumn Meeting, Sep 19, 2019, 応用物理学会
Characterization of polycrystalline YIG thin films on Si Substrates by RF Magnetron Sputtering and Annealing

Shuhei Yoshida, Takahiro Uekita, Hiromasa Shimizu

The 80th. Japan Society of Applied Physics, Autumn Meeting, Sep 19, 2019, 応用物理学会
Plasmon Drag Effect in Base Metals

T. Kaihara, H. Shimizu

IEICE Society Conference, Sep 10, 2019, 電子情報通信学会
Design and Fabrication of Si Plasmonic Waveguide heater with Noble Metal

Tomohiro Miyauchi, Kei Shiomichi, Koji Yamada, Hiromasa Shimizu, Mitaro Namiki

IEICE Society Conference, Sep 10, 2019, 電子情報通信学会
CO2 Detection with Si Slot Waveguide Ring Resonators toward On-chip Specific Gas Sensing

Y. Tomono, H. Hoshi, H. Shimizu

CLEO / QELS 2018 (Conference on Lasers and Electro-Optics / Quantum Electronics and Laser Science Conference 2018), May 9, 2019, Optical Society of America / IEEE
Fabrication of InP ring resonator using microloading effect

Satoshi Nishiyama, Hiroki Komagome, Yuya Ara, Hiromasa Shimizu, Satoshi Shimizu

The 66th. JSAP Spring Meeting, 2019, Mar 12, 2019, 応用物理学会
Characterization of Magnetic Modulation of Surface Plasmon Resonance on Al2O3/SiO2/Fe/Au Structures

Shogo Suzuki, Takahiro Shimodaira, Terunori Kaihara, Alfonso Cebollada, Gaspar Armelles, Hiromasa Shimizu

The 66th. JSAP Spring Meeting, 2019, Mar 11, 2019, 応用物理学会
Study on Sensitivity Improvement of Si Slot Ring Resonators for Gas Sensing applications

Hayato Hoshi, Yuki Tomono, Hiromasa Simizu

The 66th. JSAP Spring Meeting, 2019, Mar 11, 2019, 応用物理学会
Plasmon-enhanced hot electron emission at thin-TiO2/Au junction

Terunori Kaihara, Alfonso Cebollada, Gaspar Armelles, Hiromasa Shimizu

The 66th. JSAP Spring Meeting, 2019, Mar 10, 2019, 応用物理学会
High FOM Surface Plasmon Resonance Transducers with Membrane Structure toward Gas Sensing Application

Takahiro Shimodaira, Shogo Suzuki, Yoshiki Aizaswa, Yasufumi Iimura, Hiromasa Shimizu

PHOTONICS WEST 2019, Feb 7, 2019, SPIE
Characterization of Surface Plasmon Resonance on Au Thin Film in Optical Telecommunication Wavelength

Shogo Suzuki, Takahiro Shimodaira, Hiromasa Shimizu

The 79th. Japan Society of Applied Physics, Autumn Meeting, Sep 21, 2018, 応用物理学会
Improvement of RI resolution by modulating surface plasmon resonance in Otto configuration

T. Shimodaira, S. Suzuki, Y. Aizawa, Y. Iimura, H. Shimizu

The 79th. Japan Society of Applied Physics, Autumn Meeting, Sep 21, 2018, 応用物理学会
Investigation of Influence of Proximity Effect in Fabrication Process of InP Ring Resonator

Hiroki Komagome, Hiroaki Mizushima, Yuya Ara, Satoshi Shimizu, Hiromasa Shimizu

The 79th. Japan Society of Applied Physics, Autumn Meeting, Sep 19, 2018, 応用物理学会
Analysis of TE Mode Magneto-Optic Figure of Merit in Si Plasmonic Waveguide with Ferromagnetic / Noble Metal Hybrid Structure

Kei Shiomichi, Takahiro Shimodaira, Hiromasa Shimizu

The 79th. Japan Society of Applied Physics, Autumn Meeting, Sep 18, 2018, 応用物理学会
Fabrication and Characterization of InP Ring Resonators by Bi-level etching

H. Mizuhshima, H. Komagome, Y. Ara, H. Shimizu

IEICE Society Conference, Sep 14, 2018, 電子情報通信学会
Spintronic and Magnetic Devices based on Si Photonics －Optical isolators and memory in Silicon photonics－

Hiromasa Shimizu

The 28th Silicon Photonics Meeting, Jul 25, 2018, 電子情報通信学会シリコンフォトニクス特別研究専門委員会 Invited

Professional Memberships

Jun, 2020 - Present

American Chemical Society
Apr, 2006 - Present

the Institute of Electronics, Information and Communication Engineers
IEEE Photonics Society
The Japan Society of Applied Physics

Research Projects

Specific and highly sensitive detection of volatile organic compounds by complex surface plasmon sensors with DNA aptamers

Grants-in-Aid for Scientific Research, Grant-in-Aid for Challenging Research (Exploratory), Japan Society for the Promotion of Science, Jul, 2020 - Mar, 2023
くさび型SPRセンサとDNA、機械学習によるVOCの選択的超高感度ガス検知器の開発

産学が連携した研究開発成果の展開研究成果展開事業研究成果最適展開支援プログラム(A-STEP) トライアウトトライアウト, 科学技術振興機構, 2020 - 2021

清水大雅
中空構造を含む磁気プラズモンセンサの開発と高感度化への挑戦

挑戦的研究（萌芽）, 2018 - 2019
強磁性金属表面プラズモンを利用する革新的光アイソレータの開発

基盤研究(B), 2016 - 2018
磁性ガーネットの酸素欠損濃度と磁気異方性の電気的制御の研究

挑戦的萌芽研究, 2015 - 2017
強磁性金属ナノ粒子における光局在効果と低エネルギー磁化反転方式の研究

挑戦的萌芽研究, 2012 - 2014
一方向発振リングレーザを用いた大規模スピン光メモリ

若手研究(A), 2012 - 2014
強磁性金属の磁化による半導体レーザの発振状態制御と光情報信号処理への応用

若手研究(A), 2009 - 2011
スピン流と機能制御調整班

特定領域研究, 2010 - 2010
光スピントロニクス機能デバイスの研究

特定領域研究(計画班), 2007 - 2010
医用画像に基づく計算解剖学の創成と診断・治療支援の高度化

新学術領域研究(研究領域提案型), 2009 - 2009
スピン流と機能制御調整班

特定領域研究, 2009 - 2009
スピン流と機能制御調整班

特定領域研究, 2008 - 2008
導波路光アイソレータモノリシック集積半導体レーザの研究

若手研究(A), 2006 - 2008
Development of all-optical packet processing monolithic integrated circuits consisting of digital photonic devices

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (A), Japan Society for the Promotion of Science, 2005 - 2007

NAKANO Yoshiaki, SUGIYAMA Masakazu, TANEMURA Takuo, HIGO Akio
窒化物半導体量子構造に基づくサブバンド間遷移機能光デバイスの研究

科学研究費助成事業, 萌芽研究, 日本学術振興会, 2005 - 2006

中野義昭, 杉山正和, 清水大雅
半導体・磁性体複合構造を用いた非相反磁気光学デバイス及び集積化の研究

科学研究費補助金(特定領域研究), 特定領域研究, 文部科学省, 2004 - 2005

清水大雅, 中野義昭
電界吸収型光変調器に基づく全光スイッチ及び波長変換デバイスの研究

若手研究(B), 2004 - 2005
半導体・磁性体複合構造を用いた非相反磁気光学デバイス及び集積化の研究

特定領域研究(公募), 2003 - 2005
半導体非相反光ロジックデバイスの基礎研究

科学研究費助成事業, 萌芽研究, 日本学術振興会, 2003 - 2004

中野義昭, 清水大雅

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Media Coverage

東京農工大、シリコン光回路とコバルト金属を組み合わせた局所加熱ヒータを実現

日本経済新聞社, 日本経済新聞, https://www.nikkei.com/article/DGXLRSP620110_S1A021C2000000/, Oct, 2021 Newspaper, magazine

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Misc.

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