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Makoto Shimizu

Section

Graduate School of Engineering

Job title

Associate Professor

Degree

博士（工学）（東北大学）
修士（工学）（東北大学）

researchmap

https://researchmap.jp/7000005536

J-GLOBAL ID

201301007145736698

Research History 4

2021/04 - Present

Tohoku University　Associate Professor
2013/04 - 2021/03

Graduate School of Engineering, Tohoku University　Assistant Professor
2015/04 - 2016/03

INSA Lyon　Visiting Scholar
2011/04 - 2013/03

日本学術振興会特別研究員ＤＣ２

Education 3

Tohoku University　Graduate School, Division of Engineering　Mechanical System and Design

2010/04 - 2013/03
Tohoku University　Graduate school of Engineering　Mechanical System and Design

2008/04 - 2010/03
Tohoku University　School of Engineering

2004/04 - 2008/03

Professional Memberships 5

電気学会
The Japan Society of Applied Physics
The Japan Society of Mechanical Engineers
Japan Solar Energy Society
Heat Transfer Society of Japan

Research Interests 5

Rectenna
Thermophotovoltaics
spectrally selective materials
solar energy
Thermal radiation

Research Areas 3

Nanotechnology/Materials / Applied physics - general /
Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Thermal engineering /
Nanotechnology/Materials / Energy chemistry /

Awards 6

文部科学大臣表彰若手科学者賞

2023/04　文部科学省　熱輻射コヒーレンス制御に基く太陽エネルギー利用技術の研究
第25回青葉工学研究奨励賞

2019/12　一般財団法人青葉工学振興会　熱光起電力発電を用いた太陽エネルギー高度利用技術の実現
優秀論文発表賞

2017/04　一般社団法人電気学会
日本太陽エネルギー学会奨励賞（学生部門）

2013/05　日本太陽エネルギー学会
大学院研究奨励賞

2010/03　公益社団法人自動車技術会
日本機械学会三浦賞

2010/03　日本機械学会

Show all ︎Show 5

Papers 58

Front-surface cooling of infrared thermophotovoltaic cells

Haolin Wang, Makoto Shimizu, Rodolphe Vaillon, Daniel Chemisana Villegas, Oriol Teixido, Hiroo Yugami

Solar Energy Materials and Solar Cells　2026/01

DOI： 10.1016/j.solmat.2025.113940 　
Direct normal irradiance forecasting for high-temperature concentrated solar thermal systems

Todd Neve, Makoto Shimizu, Hiroo Yugami

Renewable Energy　2025/12

DOI： 10.1016/j.renene.2025.123748 　
Analysis of a photon-recycling optical cavity in a cylindrical thermophotovoltaic system considering thermal load in cells

Haolin Wang, Makoto Shimizu, Zhen Liu, Hiroo Yugami

Applied Thermal Engineering　248　2024/07

DOI： 10.1016/j.applthermaleng.2024.123276 　

ISSN： 1359-4311
Angular Selective Multiband Emission Based on Optical Resonances Coupled with a Leaky Mode

Makoto Shimizu, Rihab Benlyas, Hiroo Yugami

Thermal Plasmonics and Metamaterials for a Low-Carbon Society　13-38　2024/01/01

DOI： 10.1201/9781003409090-2 　
Impact of non-ideal confinement on photon recycling effects in a confined solar-thermophotovoltaic system

Makoto Shimizu, Tomoya Furuhashi, Zhen Liu, Hiroo Yugami

AIP Conference Proceedings　2841　(1)　2023/09/07

DOI： 10.1063/5.0146826 　

ISSN： 0094-243X

eISSN： 1551-7616
熱輻射スペクトル制御に基づく熱マネジメント技術の応用とその発展 Invited

清水信, 湯上浩雄

光学　52　(7)　2023/07
ふく射伝熱に基づく熱の電力変換 Invited

清水信

伝熱　62　(260)　43-48　2023/07
Full spectrum utilization of sunlight using thermophotovoltaics Invited

Makoto Shimizu, Hiroo Yugami

JSAP Review　2023　230415-1-230415-5　2023/05

DOI： 10.11470/jsaprev.230415 　
Full-spectrum utilization of sunlight using thermophotovoltaics Invited

SHIMIZU Makoto, YUGAMI Hiroo

Oyo Buturi　92　(3)　156-160　2023/03/01
Publisher: The Japan Society of Applied Physics
DOI： 10.11470/oubutsu.92.3_156 　

ISSN： 0369-8009

eISSN： 2188-2290

More details Close

Effective solar energy utilization is extremely important to realize carbon neutral society. Therefore, a power generation technology that can utilize full spectrum of sunlight is required. A thermophotovoltaics (TPV) based solar energy conversion, called as solar-TPV, potentially enables the use of the full spectrum of sunlight and high-efficiency conversion with single-junction cells. Here, we introduce a technology of controlling thermal radiation spectrum which is important to achieve high-efficiency solar-TPV and an experimental result using designed solar-TPV system. In addition, we show a perspective of advanced solar energy utilization by solar-TPV.
Enhanced current density and asymmetry of metal-insulator-metal diodes based on self-assembly of Pt nanoparticles Peer-reviewed

Zhen Liu, Shunsuke Abe, Makoto Shimizu, Hiroo Yugami

Applied Physics Letters　122　(9)　2023/02/27

DOI： 10.1063/5.0123591 　

ISSN： 0003-6951
Highly confined spectrally selective absorber-emitter for effective solar thermophotovoltaics Peer-reviewed

Makoto Shimizu, Tomoya Furuhashi, Zhen Liu, Hiroo Yugami

Solar Energy Materials and Solar Cells　245　111878-111878　2022/09
Publisher: Elsevier BV
DOI： 10.1016/j.solmat.2022.111878 　

ISSN： 0927-0248
Advances in thermophotovoltaics: Materials, devices, and systems

Alejandro Datas, Mathieu Francoeur, Makoto Shimizu, Rodolphe Vaillon

Solar Energy Materials and Solar Cells　240　2022/06/15

DOI： 10.1016/j.solmat.2022.111711 　

ISSN： 0927-0248
Optical rectenna with wide wavelength coverage from a hollow resonator coupled with a metal-insulator-metal tunnel diode Peer-reviewed

Daisuke Matsuura, Makoto Shimizu, Zhen Liu, Hiroo Yugami

Applied Physics Express　15　(6)　2022/06

DOI： 10.35848/1882-0786/ac6c1b 　

ISSN： 1882-0778

eISSN： 1882-0786
Emission bandwidth control on a two-dimensional superlattice microcavity array Peer-reviewed

Zhen Liu, Makoto Shimizu, Hiroo Yugami

Optics Express　30　(8)　13839-13846　2022/04

DOI： 10.1364/OE.455722 　

eISSN： 1094-4087
Multiband infrared emissions limited in the grazing angle from metal-dielectric-metal metamaterials Peer-reviewed

Rihab Benlyas, Makoto Shimizu, Keiya Otomo, Zhen Liu, Hiroo Yugami

Optics Express　30　(6)　9380-9388　2022/03/14

DOI： 10.1364/OE.450802 　

eISSN： 1094-4087
Effective photon recycling in solar thermophotovoltaics using a confined cuboid emitter Peer-reviewed

Asaka Kohiyama, Makoto Shimizu, Kana Konno, Tomoya Furuhashi, Hiroo Yugami

Optics Express　28　(26)　38567-38567　2020/12/07
Publisher: The Optical Society
DOI： 10.1364/oe.412764 　

eISSN： 1094-4087
Amorphous Nanohole Patterns Formed by Spinodal Decomposition of Nickel Superalloys for Solar-Selective Absorbers Peer-reviewed

Makoto Shimizu, Zhen Liu, Hiroo Yugami

ACS Applied Nano Materials　3　(9)　9502-9509　2020/09/25

DOI： 10.1021/acsanm.0c02238 　

eISSN： 2574-0970
Quantitative evaluation of optical properties for defective 2D metamaterials based on diffraction imaging Peer-reviewed

Zhen Liu, Makoto Shimizu, Hiroo Yugami

Optics Express　28　(4)　5812-5821　2020/02/17

DOI： 10.1364/OE.385100 　

eISSN： 1094-4087
Diffraction Topography Based Optical Performance Evaluation Method for Large-scale Defective Metamaterial

Zhen LIU, Makoto SHIMIZU, Hiroo YUGAMI

The Proceedings of Conference of Tohoku Branch　2020.55　2020
Publisher: Japan Society of Mechanical Engineers
DOI： 10.1299/jsmeth.2020.55.101_paper 　

ISSN： 2424-2713
High-current density and high-asymmetry MIIM diode based on oxygen-non-stoichiometry controlled homointerface structure for optical rectenna Peer-reviewed

Daisuke Matsuura, Makoto Shimizu, Hiroo Yugami

SCIENTIFIC REPORTS　9　2019/12

DOI： 10.1038/s41598-019-55898-x 　

ISSN： 2045-2322
Evaluation of thermal stability in spectrally selective few-layer metallo-dielectric structures for solar thermophotovoltaics Peer-reviewed

Shimizu, M., Kohiyama, A., Yugami, H.

Journal of Quantitative Spectroscopy and Radiative Transfer　212　45-49　2018/06

DOI： 10.1016/j.jqsrt.2018.02.037 　

ISSN： 0022-4073
Radiative heat transfer enhancement using geometric and spectral control for achieving high-efficiency solar-thermophotovoltaic systems Peer-reviewed

Asaka Kohiyama, Makoto Shimizu, Hiroo Yugami

Japanese Journal of Applied Physics　57　(4)　2018/04/01
Publisher: Japan Society of Applied Physics
DOI： 10.7567/JJAP.57.040312 　

ISSN： 1347-4065 0021-4922
Spectrally shaping high-temperature radiators for thermophotovoltaics using Mo-HfO2 trilayer-on-substrate structures Peer-reviewed

Etienne Blandre, Makoto Shimizu, Asaka Kohiyama, Hiroo Yugami, Pierre-Olivier Chapuis, Rodolphe Vaillon

Optics Express　26　(4)　4346-4357　2018/02/19
Publisher: OSA - The Optical Society
DOI： 10.1364/OE.26.004346 　

ISSN： 1094-4087
Development of small power sources based on a micro-SOFC system operated on liquid fuels for mobile electric devices Peer-reviewed

S. Takahara, K. Kato, F. Iguchi, M. Shimizu, H. Yugami

ECS Transactions　78　(1)　1871-1878　2017/05/30
Publisher: Electrochemical Society Inc.
DOI： 10.1149/07801.1871ecst 　

ISSN： 1938-6737 1938-5862
High spectral selectivity for solar absorbers using a monolayer transparent conductive oxide coated on a metal substrate Peer-reviewed

Makoto Shimizu, Mari Suzuki, Fumitada Iguchi, Hiroo Yugami

JOURNAL OF APPLIED PHYSICS　121　(18)　2017/05

DOI： 10.1063/1.4983189 　

ISSN： 0021-8979

eISSN： 1089-7550
Application of in-situ Raman scattering spectroscopy for stress condition measurement in solid oxide fuel cells Peer-reviewed

Fumitada Iguchi, Shoma Onuki, Makoto Shimizu, Tatsuya Kawada, Hiroo Yugami

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN　125　(4)　213-217　2017/04

DOI： 10.2109/jcersj2.16275 　

ISSN： 1882-0743

eISSN： 1348-6535
Enhanced thermal transport in polymers with an infrared-selective thermal emitter for electronics cooling Peer-reviewed

Shinichiro Tsuda, Makoto Shimizu, Fumitada Iguchi, Hiroo Yugami

APPLIED THERMAL ENGINEERING　113　112-119　2017/02

DOI： 10.1016/j.applthermaleng.2016.11.024 　

ISSN： 1359-4311
Solar absorbers having high spectral selectivity with a transparent conductive oxide film

Shimizu Makoto, Iguchi Fumitada, Yugami Hiroo

The Proceedings of Autumn Conference of Tohoku Branch　2017.53　205　2017
Publisher: The Japan Society of Mechanical Engineers
DOI： 10.1299/jsmetohoku.2017.53.205 　

eISSN： 2424-2721
Analysis of MIM geometric tunnel diode in optical rectenna system that using spectrally controlled thermal radiation

Matsuura Daisuke, Shimizu Makoto, Chen Qiang, Yugami Hiroo

The Proceedings of Autumn Conference of Tohoku Branch　2017.53　420　2017
Publisher: The Japan Society of Mechanical Engineers
DOI： 10.1299/jsmetohoku.2017.53.420 　

eISSN： 2424-2721
Multilayer coated microstructure for solar selective absorbers Peer-reviewed

Makoto Shimizu, Hiroki Akutsu, Shinichiro Tsuda, Kosuke Hikichi, Masafumi Kumano, Hiroo Yugami

IEEJ Transactions on Sensors and Micromachines　137　(11)　393-399　2017
Publisher: Institute of Electrical Engineers of Japan
DOI： 10.1541/ieejsmas.137.393 　

ISSN： 1347-5525 1341-8939
High-temperature Solar Selective Absorbers Based on a Transparent Conductive Oxide Film Coated Periodic Micro-hole Array Peer-reviewed

Makoto Shimizu, Toshiro Abe, Fumitada Iguchi, Hiroo Yugami

INTERNATIONAL CONFERENCE ON CONCENTRATING SOLAR POWER AND CHEMICAL ENERGY SYSTEMS (SOLARPACES 2016)　1850　2017

DOI： 10.1063/1.4984494 　

ISSN： 0094-243X
Multilayer coated microstructure for solar selective absorbers Peer-reviewed

Makoto Shimizu, Hiroki Akutsu, Shinichiro Tsuda, Kosuke Hikichi, Masafumi Kumano, Hiroo Yugami

IEEJ Transactions on Sensors and Micromachines　137　(11)　393-399　2017
Publisher: Institute of Electrical Engineers of Japan
DOI： 10.1541/ieejsmas.137.393 　

ISSN： 1347-5525 1341-8939
Unidirectional radiative heat transfer with a spectrally selective planar absorber/emitter for high-efficiency solar thermophotovoltaic systems Peer-reviewed

Asaka Kohiyama, Makoto Shimizu, Hiroo Yugami

APPLIED PHYSICS EXPRESS　9　(11)　2016/11

DOI： 10.7567/APEX.9.112302 　

ISSN： 1882-0778

eISSN： 1882-0786
A high-temperature solar selective absorber based upon periodic shallow microstructures coated by multi-layers using atomic layer deposition Peer-reviewed

Makoto Shimizu, Hiroki Akutsu, Shinichiro Tsuda, Fumitada Iguchi, Hiroo Yugami

Photonics　3　(2)　13　2016/06/01
Publisher: MDPI AG
DOI： 10.3390/photonics3020013 　

ISSN： 2304-6732
高ふく射繊維を用いた高温炉におけるエネルギー回収 Peer-reviewed

小島匠, 酒井淳, 清水信, 井口史匡, 湯上浩雄, 井口浩詠, 久行輝美, 中川成人, 山村武民

日本機械学会論文集　82　(838)　1500588-1-1500588-12　2016

DOI： 10.1299/transjsme.15-00588 　
Development of methanol fueled micro-SOFC system for mobile electronic devices

S. Takahara, K. Kato, F. Iguchi, M. Shimizu, H. Yugami

ECS Transactions　75　(42)　33-41　2016
Publisher: Electrochemical Society Inc.
DOI： 10.1149/07542.0033ecst 　

ISSN： 1938-5862 1938-6737
Narrowband thermal radiation from closed-end microcavities Peer-reviewed

Asaka Kohiyama, Makoto Shimizu, Fumitada Iguchi, Hiroo Yugami

Journal of Applied Physics　118　(13)　2015/10/07
Publisher: American Institute of Physics Inc.
DOI： 10.1063/1.4931375 　

ISSN： 1089-7550 0021-8979
Thermal Management Technique Using Control of Thermal Radiation Spectrum for Encapsulated Electronic Devices Peer-reviewed

Shinichiro Tsuda, Makoto Shimizu, Fumitada Iguchi, Hiroo Yugami

IEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY　5　(7)　971-979　2015/07

DOI： 10.1109/TCPMT.2015.2443914 　

ISSN： 2156-3950

eISSN： 2156-3985
Anisotropic multi-step etching for large-area fabrication of surface microstructures on stainless steel to control thermal radiation Peer-reviewed

M. Shimizu, T. Yamada, K. Sasaki, A. Takada, H. Nomura, F. Iguchi, H. Yugami

SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS　16　(2)　2015/04

DOI： 10.1088/1468-6996/16/2/025001 　

ISSN： 1468-6996

eISSN： 1878-5514
Effective Thermal Dissipation through Semi-Transparent Materials with Thermal Radiation Control

清水信, 井口史匡

Proceedings of Twelfth International Conference on Flow Dynamics　12　734-735　2015
Influence of small defects produced in electrolytes during manufacturing processes on operated SOFCs

S. Onuki, F. Iguchi, M. Shimizu, T. Kawada, H. Yugami

ECS Transactions　68　(1)　2421-2428　2015
Publisher: Electrochemical Society Inc.
DOI： 10.1149/06801.2421ecst 　

ISSN： 1938-6737 1938-5862
Design of new power source based on micro-SOFC for mobile electronic devices

S. Murayama, F. Iguchi, M. Shimizu, S. Tanaka, H. Yugami

ECS Transactions　68　(1)　2349-2355　2015
Publisher: Electrochemical Society Inc.
DOI： 10.1149/06801.2349ecst 　

ISSN： 1938-6737 1938-5862
High-efficiency solar-thermophotovoltaic system equipped with a monolithic planar selective absorber/emitter Peer-reviewed

Makoto Shimizu, Asaka Kohiyama, Hiroo Yugami

JOURNAL OF PHOTONICS FOR ENERGY　5　2015/01

DOI： 10.1117/1.JPE.5.053099 　

ISSN： 1947-7988
Residual stress in NiO-YSZ composites and its relationship to microstructure

Y. Akaza, T. Syu, F. Iguchi, M. Shimizu, H. Yugami

ECS Transactions　68　(1)　1291-1296　2015
Publisher: Electrochemical Society Inc.
DOI： 10.1149/06801.1291ecst 　

ISSN： 1938-6737 1938-5862
Application of high-temperature photonics for solar energy systems Peer-reviewed

Makoto Shimizu, Asaka Kohiyama, Hiroaki Kobayashi, Mari Suzuki, Fumitada Iguchi, Hiroo Yugami

Proceedings of NanoRad2014　36-37　2014/06/06
HIGH-TEMPERATURE PHOTONICS FOR ADVANCED SOLAR ENERGY APPLICATIONS

Makoto Shimizu, Asaka Kohiyama, Fumitada Iguchi, Hiroo Yugami

Proceedings of Grand Renewable Energy 2014　2014
10% efficiency solar thermophotovoltaic systems using spectrally controlled monolithic planar absorber/emitters Peer-reviewed

Makoto Shimizu, Asaka Kohiyama, Hiroo Yugami

PHOTONICS FOR SOLAR ENERGY SYSTEMS V　9140　91400P　2014

DOI： 10.1117/12.2057315 　

ISSN： 0277-786X
High-temperature photonics using self-organization of superalloys for solar selective absorbers

Makoto Shimizu, Kiyotaka Konno, Hiroaki Kobayashi, Fumitada Iguchi, Hiroo Yugami

2013 ISES SOLAR WORLD CONGRESS　57　411-417　2014

DOI： 10.1016/j.egypro.2014.10.194 　

ISSN： 1876-6102
Spectrally Controlled Thermal Radiation Based on Surface Microstructures for High-Efficiency Solar Thermophotovoltaic system

Asaka Kohiyama, Makoto Shimizu, Hiroaki Kobayashi, Fumitada Iguchi, Hiroo Yugami

2013 ISES SOLAR WORLD CONGRESS　57　517-523　2014

DOI： 10.1016/j.egypro.2014.10.205 　

ISSN： 1876-6102
High-temperature solar selective absorbers using transparent conductive oxide coated metal

Makoto Shimizu, Mari Suzuki, Fumitada Iguchi, Hiroo Yugami

2013 ISES SOLAR WORLD CONGRESS　57　418-426　2014

DOI： 10.1016/j.egypro.2014.10.195 　

ISSN： 1876-6102
High-temperature photonic materials for thermophotovoltaic power generation

Hiroo Yugami, Makoto Shimizu

応用物理学会誌　82　(11)　946-949　2013/11
Publisher:
ISSN： 0369-8009
Design and Fabrication of Micro SOFC for the Power Source of Mobile Electric Devices

S. Murayama, F. Iguchi, Y. Inagaki, M. Shimizu, S. Tanaka, H. Yugami

SOLID OXIDE FUEL CELLS 13 (SOFC-XIII)　57　(1)　799-806　2013

DOI： 10.1149/05701.0799ecst 　

ISSN： 1938-5862
Evaluation of Stress Condition of Operated Anode Supported-Type SOFC under Operating Conditions Based on Raman Scattering Spectroscopy

S. Onuki, S. Onodera, F. Iguchi, M. Shimizu, T. Kawada, H. Yugami

SOLID OXIDE FUEL CELLS 13 (SOFC-XIII)　57　(1)　951-957　2013

DOI： 10.1149/05701.0951ecst 　

ISSN： 1938-5862
Stress Conditions Transition by Thermal Annealing in Barium Zirconate Based Proton Conducting Thin Films Fabricated Using PLD Method

T. Fukushige, F. Iguchi, M. Shimizu, H. Yugami

SOLID OXIDE FUEL CELLS 13 (SOFC-XIII)　57　(1)　1045-1051　2013

DOI： 10.1149/05701.1045ecst 　

ISSN： 1938-5862
Relationship between Electrical Properties and Stress Field in Solid Electrolyte Thin Films

Y. Osawa, F. Iguchi, M. Shimizu, H. Yugami

SOLID OXIDE FUEL CELLS 13 (SOFC-XIII)　57　(1)　1097-1102　2013

DOI： 10.1149/05701.1097ecst 　

ISSN： 1938-5862
Fabrication of quasi-periodic surface microcavities by selective etching of self-organized superalloys for high-temperature photonics Peer-reviewed

Makoto Shimizu, Kiyotaka Konno, Fumitada Iguchi, Hiroo Yugami

APPLIED PHYSICS LETTERS　101　(22)　2012/11

DOI： 10.1063/1.4767903 　

ISSN： 0003-6951
Application Technologies of Spectrally Controlled Thermal Radiation Using Microstructures for Energy Systems Peer-reviewed

Makoto Shimizu, Fumitada Iguchi, Hiroo Yugami

Proceedings of international workshop on Nano - Micro thermal radiation　92-95　2012/06
Thermal Radiation Control by Surface Gratings as an Advanced Cooling System for Electronic Devices Peer-reviewed

Makoto Shimizu, Hiroo Yugami

JOURNAL OF THERMAL SCIENCE AND TECHNOLOGY　6　(2)　297-306　2011

DOI： 10.1299/jtst.6.297 　

ISSN： 1880-5566

Show all ︎Show first 5

Misc. 37

金属ナノ薄膜を用いた微小共振器構造からの低指向性準単色熱放射

清水信, 矢部雄斗, 小桧山朝華, 井口史匡, 湯上浩雄

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　79th　ROMBUNNO.20a‐225B‐5　2018/09/05
太陽熱光起電力発電システムにおけるふく射抽出効率の向上

小桧山朝華, 小桧山朝華, 清水信, 湯上浩雄

応用物理学会春季学術講演会講演予稿集(CD-ROM)　65th　ROMBUNNO.19a‐C301‐4　2018/03/05
Fabrication of surface microstructures based on spinodal decomposition for high-temperature solar selective absorbers

Makoto Shimizu, Toshiro Abe, Fumitada Iguchi, Hiroo Yugami

International Heat Transfer Conference　2018-August　7689-7694　2018/01/01

ISSN： 2377-424X
Power Generation Test of Thermophotovoltaic Generation System using Concentrated Solar Power

小桧山朝華, 清水信, 湯上浩雄

太陽/風力エネルギー講演論文集　2017　235‐238　2017/10/25
ふく射熱輸送特性と波長選択性の太陽熱光起電力発電システム効率への影響(II)

小桧山朝華, 小桧山朝華, 清水信, 湯上浩雄

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　78th　ROMBUNNO.5p‐PB2‐1　2017/08/25
熱ふく射スペクトル制御に基づく高効率な太陽熱光起電力発電システムの開発

清水信, 小桧山朝華, 湯上浩雄

クリーンエネルギー　26　(4)　7‐12-12　2017/04/10
Publisher: 日本工業出版
ISSN： 0918-7510
ふく射熱輸送特性と波長選択性の太陽熱光起電力発電システム効率への影響

小桧山朝華, 清水信, 湯上浩雄

応用物理学会春季学術講演会講演予稿集(CD-ROM)　64th　ROMBUNNO.17a‐514‐2　2017/03/01
Controlling of thermal radiation spectrum using metal nano film-dielectric film layered structure

清水信, 小桧山朝華, 湯上浩雄

電気学会研究会資料. PHS　2016　(58)　39-42　2016/12/19
Publisher: 電気学会
Multilayer Coated Microstructure for Solar Selective Absorbers

33　1-6　2016/10/02
Publisher: Institute of Electrical Engineers of Japan
熱輸送効率向上による太陽熱光起電力発電システムの高効率化

小桧山朝華, 清水信, 湯上浩雄

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　77th　ROMBUNNO.15p‐B4‐12　2016/09/01
187 Heat Transfer Enhancement Technique Using Control of Thermal Radiation Spectrum for Electronic Devices Encapsulated with Resin

TSUDA Shinichiro, SHIMIZU Makoto, IGUCHI Fumitada, YUGAMI Hiroo

2016　(51)　171-172　2016
Publisher: The Japan Society of Mechanical Engineers
A solar thermophotovoltaic system using spectrally controlled monolithic planar thermal emitter/absorber

Hiroo Yugami, Asaka Kohiyama, Makoto Shimizu, Fumitada Iguchi

ASME 2016 5th International Conference on Micro/Nanoscale Heat and Mass Transfer, MNHMT 2016　1　2016/01/01

DOI： 10.1115/MNHMT2016-6692 　
Spectral control of thermal radiation using metal-dielectric multilayers for high-temperature usage over 1000°C

Makoto Shimizu, Asaka Kohiyama, Fumitada Iguchi, Hiroo Yugami

ASME 2016 5th International Conference on Micro/Nanoscale Heat and Mass Transfer, MNHMT 2016　1　2016/01/01

DOI： 10.1115/MNHMT2016-6699 　
Solar-thermophotovoltaic systems using spectrally selective absorber/emitter based on metal-dielectric multilayer

A. Kohiyama, M. Shimizu, H. Yugami

Proceedings of SPIE - The International Society for Optical Engineering　9937　2016/01/01

DOI： 10.1117/12.2237672 　

ISSN： 0277-786X
Low-directivity quasi-monochromatic thermal radiation from microcavities covered by thin metal film

Asaka Kohiyama, Makoto Shimizu, Fumitada Iguchi, Hiroo Yugami

ASME 2016 5th International Conference on Micro/Nanoscale Heat and Mass Transfer, MNHMT 2016　1　2016/01/01

DOI： 10.1115/MNHMT2016-6683 　
熱ふく射スペクトル制御技術を用いた太陽熱光起電力発電システム

小桧山朝華, 清水信, 井口史匡, 湯上浩雄

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　76th　ROMBUNNO.15P-2C-15　2015/08/31
Quasi-monochromatic thermal radiation based on microcavity structures

小桧山朝華, 清水信, 井口史匡, 湯上浩雄

電気学会マイクロマシン・センサシステム研究会資料　MSS-15　(15-34)　97-99　2015/07/03
熱放射スペクトル制御材料を用いた高効率ソーラー熱光起電力発電

清水信, 小桧山朝華, 酒井淳, 柳澤邦彦, 井口史匡, 湯上浩雄

応用物理学会春季学術講演会講演予稿集(CD-ROM)　62nd　ROMBUNNO.11A-P1-12　2015/02/26
マイクロキャビティ構造からの波長選択性熱ふく射スペクトル狭帯域化

小桧山朝華, 清水信, 井口史匡, 湯上浩雄

応用物理学会春季学術講演会講演予稿集(CD-ROM)　62nd　ROMBUNNO.13P-A10-6　2015/02/26
ソーラー熱光起電力発電における熱放射スペクトル制御材料の高温特性

清水信, 柳沢邦彦, 小桧山朝華, 井口史匡, 湯上浩雄

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　75th　ROMBUNNO.19A-A23-3　2014/09/01
OS1613 Electrical properties of YSZ under in-plane compressive stress

IGUCHI Fumitada, YAMANE Takuya, SHIMIZU Makoto, YUGAMI Hiroo

2014　"OS1613-1"-"OS1613-2"　2014/07/19
Publisher: The Japan Society of Mechanical Engineers

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Lattice volume of solid state ionic conductors was closely related to its electrical properties, because oxygen ion, proton and other ionic carriers migrate via hopping between sights in lattice. Therefore, in the case of conventional developing of ionic conductors, i.e. doping different valent element, lattice volume change caused by doping had been discussed. In this study, we attempted the effect of outer forces to lattice volume and its influence to electrical properties. Yttrium stabilized zirconia was adopted to be objective materials, because it is most popular electrolyte material for SOFCs. Single crystalline pellets of YSZ were fitted into the basement made of Al_2O_3 and Si_3N_4 at room temperature, and annealed. Compressive outer forces was applied in axial directions because thermal expansion coefficient is differ between YSZ (10.3×10^<-6> K^<-1>), Al_2O_3 (7.7×10^<-6> K^<-1>) and Si_3N_4 (3.2×10^<-6> K^<-1>). The applied forces reached to 800 MPa at 800 oC with the Si_3N_4 basement. Electrical conductivity of YSZ pellets was measured in vertical direction to stress plane, and the influence of lattice modulation was discussed.
Enhancement of radiation heat transfer by high-temperature photonics

清水信, 小桧山朝華, 井口史匡, 湯上浩雄

電気学会マイクロマシン・センサシステム研究会資料　MSS-14　(1-4.6-23)　109-112　2014/05/27
135 Energy recovery in the high temperature furnace using a highly emissive SiC fiber

Kojima Takumi, Sakai Jun, Shimizu Makoto, Iguchi Fumitada, Yugami Hiroo

2014　(49)　71-72　2014
Publisher: The Japan Society of Mechanical Engineers
Application of transparent conductive oxides films for high-temperature solar selective absorbers

Makoto Shimizu, Mari Suzuki, Asaka Kohiyama, Fumitada Iguchi, Hiroo Yugami

ASME 2014 8th International Conference on Energy Sustainability, ES 2014 Collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology　1　2014/01/01

DOI： 10.1115/ES2014-6353 　
High-efficiency thermophotovoltaic system by quasi-monochromatic thermal radiation

Asaka Kohiyama, Makoto Shimizu, Hiroaki Kobayashi, Fumitada Iguchi, Hiroo Yugami

ASME 2014 8th International Conference on Energy Sustainability, ES 2014 Collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology　1　2014/01/01

DOI： 10.1115/ES2014-6743 　
Thermal management of power sources for mobile electronic devices based on micro-SOFC

S. Murayama, F. Iguchi, M. Shimizu, H. Yugami

Journal of Physics: Conference Series　557　2014/01/01

DOI： 10.1088/1742-6596/557/1/012050 　

ISSN： 1742-6588
A solar thermophotovoltaic generation with a monolithic planar absorber/emitter material

Hiroaki Kobayashi, Jun Sakai, Asaka Kohiyama, Makoto Shimizu, Fumitada Iguchi, Hiroo Yugami

Optics InfoBase Conference Papers　2013/12/01
Solar Selective Absorber for Thermophotovoltaic Generation Systems Used Concentrated Solar Power

清水信, 小桧山朝華, 小林大晃

太陽/風力エネルギー講演論文集　73-76　2013
Publisher: 日本太陽エネルギー学会
Practicable fabrication technology of high-temperature photonic materials for thermophotovoltaic systems

Makoto Shimizu, Hiroaki Kobayashi, Kunihiko Yanagisawa, Fumitada Iguchi, Hiroo Yugami

Optics InfoBase Conference Papers　2013/01/01
244 Fabrication of periodic microstmcture on refractory metals for solar selective absorbers

KONNO Kiyotaka, SHIMIZU Makoto, IGUCHI Fumitada, YUGAMI Hiroo

2012　(47)　294-295　2012/03/13
Publisher: The Japan Society of Mechanical Engineers
Transparent conducting oxide for solar selective absorbers

327-330　2012
Publisher: 日本太陽エネルギー学会
Design of solar selective absorbing material using refractory metal with periodic mecrostructure

331-334　2012
Publisher: 日本太陽エネルギー学会
High-temperature solar selective absorbers based on interface effects in refractory metals coated with transparent conductive oxides

Makoto Shimizu, Fumitada Iguchi, Hiroo Yugami

ASME 2012 6th International Conference on Energy Sustainability, ES 2012, Collocated with the ASME 2012 10th International Conference on Fuel Cell Science, Engineering and Technology　423-428　2012/01/01

DOI： 10.1115/ES2012-91256 　
High-temperature solar selective absorber material using surface microcavity structures

Makoto Shimizu, Kimio Takeuchi, Hitoshi Sai, Fumitada Iguchi, Noriko Sata, Hiroo Yugami

ASME 2011 5th International Conference on Energy Sustainability, ES 2011　783-787　2011/12/01

DOI： 10.1115/ES2011-54599 　
150 Application of thermal radiation control by surface microstructures for cooling electronic devices

Shimizu Makoto, Yugami Hiroo

2011　(46)　104-105　2011/03/15
Publisher: The Japan Society of Mechanical Engineers
123 Enhancement of cooling electronic devices by spectrally selective thermal radiation

Shimizu Makoto, Yugami Hiroo

2010　(45)　48-49　2010/03/12
Publisher: The Japan Society of Mechanical Engineers
J0103-4-2 Enhancement of cooling electronic devices by spectrally selective thermal radiation

Shimizu Makoto, Yugami Hiroo

The proceedings of the JSME annual meeting　2009　71-72　2009
Publisher: The Japan Society of Mechanical Engineers
DOI： 10.1299/jsmemecjo.2009.6.0_71 　

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This paper describes the new technique of cooling electronic devices packaged in resin. In recent years, cooling electronic devices becomes very serious problem. To enhance thermal radiation from electronic devices, this problem is improved because 20%-40% of heat is dissipated by radiative heat transfer. We report new technique about cooling electronic devices to control radiative spectra from its surface. Resin which packages an electronic device prevents radiation from going outside air. We consider that radiation from electronic devices transmits resin to control radiative spectra. As a result, cooling performance improved. A spectral selective emitter which consists of periodical micron meter scale two-dimensional grating on metal surface can control radiative spectra. In this research, we decide an optimal selective emitter design from simulation and fabricated it by micro-machining technology. Finally, the fact that using spectral selective emitter enhanced cooling performance is obtained from cooling performance test.

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Books and Other Publications 4

次世代の太陽電池・太陽光発電―その発電効率向上，用途と市場の可能性―

清水信

技術情報協会　2018/04
熱ふく射スペクトル制御に基づく高効率な太陽熱光起電力発電システムの開発

清水信, 小桧山朝華, 湯上浩雄

クリーンエネルギー、26(4)　2017
ナローギャップＰＶセルを用いた熱光起電力発電

湯上浩雄, 清水信

応用電子物性分科会誌、24(2)　2015
高温フォトニクス材料を用いた熱光起電力発電システム

湯上浩雄, 清水信

応用物理、82(11)　2013

Presentations 121

Optical Rectenna Based on a Hollow Resonator for Mid-Infrared Energy Harvesting

Zhen Liu, Yuji Oka, Makoto Shimizu, Hiroo Yugami

第85回応用物理学会秋季学術講演会　2024/09/19
プラズモニック共振器からの角度選択性熱放射

清水信, Benlyas Rihab, Liu Zhen, 湯上浩雄

第85回応用物理学会秋季学術講演会　2024/09/19
InGaAs熱光起電力発電セルへ向けたパターン化誘電体裏面電極の作製

伊達仁基, 大島隆治, 庄司靖, 斎均, 清水信, 菅谷武芳, 八木修平, 矢口裕之

第85回応用物理学会秋季学術講演会　2024/09/18
Optical rectenna using a hollow resonator for broad wavelength range infrared energy harvesting

Makoto Shimizu, Zhen Liu, Daisuke Matsuura, Hiroo Yugami

7th ASME Micro/Nanoscale Heat & Mass Transfer International Conference (MNHMT2024)　2024/08/06
Narrowband Thermal Radiation on Refractory Metal Using 2d Superlattice Photonic Microcavity

Zhen Liu, Makoto Shimizu, Hiroo Yugami

7th ASME Micro/Nanoscale Heat & Mass Transfer International Conference (MNHMT2024)　2024/08/05
Design of Optical Cavity for Thermophotovoltaic Systems Considering Thermal Behavior of Gasb Cells

Haolin Wang, Makoto Shimizu, Hiroo Yugami

NanoRad2024　2024/07/19
Thermochromic thermal radiator based on angle selective thermal radiation applicable under direct solar irradiance Invited

Makoto Shimizu, Ryu Onozaki, Rihab Benlyas, Zhen Liu, Hiroo Yugami

META2024　2024/07/18
Power Generation Using Thermal Radiation and Cavity Antenna Coupling for Infrared Energy Harvesting

Makoto Shimizu, Zhen Liu, Daisuke Matsuura, Hiroo Yugami

NanoRad2024　2024/07/17
Quantitative Evaluation of Radiation Peak Intensity for Metamaterials Containing Structural Defects

Zhen Liu, Makoto Shimizu, Ryosuke Abe, Hiroo Yugami

ACTS 2024　2024/06/27
Angle-Selective Thermal Emission Over Broad Wavelength Range Using Plasmonic Metamaterials

Makoto Shimizu, Rihab Benlyas, Zhen Liu, Hiroo Yugami

ACTS 2024　2024/06/27
Designing a Photon Recycling Optical Cavity with Ray-Trace Simulations and Thermal Load Considerations for TPV Cells

Haolin Wang, Makoto Shimizu, Hiroo Yugami

ACTS 2024　2024/06/25
レクテナ技術に基づく赤外光の電力変換

清水信, 松浦大輔, Liu Zhen, 湯上浩雄

2023年度第7回無線電力伝送研究会　2024/03/15
Enhancing Photon Recycling in TPV Systems through Optical Cavity Design: Consideration of PV Cell temperature dependence

Haolin Wang, Makoto Shimizu, Hiroo Yugami

熱工学コンファレンス2023　2023/10/15
Metal-insulator-metal diode using self-assembled Pt nanoparticles for optical rectenna

Zhen Liu, Makoto Shimizu, Hiroo Yugami

第84回応用物理学会秋季学術講演会　2023/09/23
Design of Optical Cavities to Enhance Photon Transport Efficiency in Thermophotovoltaic Systems

Haolin Wang, Makoto Shimizu, Hiroo Yugami

第84回応用物理学会秋季学術講演会　2023/09/23
金属―誘電体積層構造を用いた高温フォトニクス技術 Invited

清水信, 湯上浩雄

第83回応用物理学会秋季学術講演会　2022/09/20
Optical Rectennas for Photoelectric Conversion of Infrared Light Invited

Makoto Shimizu, Daisuke Matsuura, Zhen Liu, Hiroo Yugami

The 13th International Symposium of Advanced Energy Science　2022/09/05
Directive Multiband Thermal Emitters Invited

Makoto Shimizu, Rihab Benlyas, Zhen Liu, Hiroo Yugami

META 2022 12th International Conference on Metamaterials, Photonic Crystals and Plasmonics　2022/07/21
熱輻射制御による熱光起電力発電および熱放射スペクトル制御による電子デバイス冷却 Invited

湯上浩雄, 清水信

CSJ化学フェスタ2020　2020/10/21
光レクテナのための酸素不定比性制御に基づくホモ界面MIIMダイオードの作製

清水信, 松浦大輔, 湯上浩雄

第81回応用物理学会秋季学術講演会　2020/09/08
Microstructure-based spectral shaping of thermal radiation for high-temperature solar selective absorbers Invited

Makoto Shimizu, Hiroo Yugami

APTSE2019&MNHTE　2019/11/01
光レクテナのための酸素不定比性制御に基づくホモ界面MIIMダイオード

松浦大輔, 清水信, 湯上浩雄

第80回応用物理学会秋季学術講演会　2019/09/18
Unidirectional radiative heat transfer using monolithic cube absorber/emitter in solar-thermophotovoltaic systems

Asaka Kohiyama, Makoto Shimizu, Hiroo Yugami

6th ASME International Conference of Micro/Nanoscale Heat and Mass Transfer　2019/07/08
ALD法を用いたフォトニック構造の波長選択吸収特性向上

清水信, 阿久津宏樹, 湯上浩雄

2019/05/30
Effective solar energy conversion via photon management in thermophotovoltaics

Asaka Kohiyama, Makoto Shimizu, Hiroo Yugami

2019/05/24
Effective solar energy conversion based on spectral control of thermal radiation via monolithic absorber/emitter Invited

Makoto Shimizu, Asaka Kohiyama, Kana Konno, Hiroo Yugami

Nano-Micro Conference　2018/12
金属ナノ薄膜を用いた微小共振器構造からの低指向性準単色熱放射

清水信, 矢部雄斗, 小桧山朝華, 井口史匡, 湯上浩雄

第79回応用物理学会秋季学術講演会　2018/09/20
Fabrication of Surface Microstructures Based on Spinodal Decomposition for High-Temperature Solar Selective Absorbers International-presentation

Makoto Shimizu, Toshiro Abe, Fumitada Iguchi, Hiroo Yugami

16th International Heat Transfer Conference (IHTC-16)　2018/08/14
Solar selective absorbers using submicron structures formed by spinodal decomposition International-presentation Invited

Makoto Shimizu, Fumitada Iguchi, Hiroo Yugami

Progress in Electromagnetics Research Symposium (PIERS 2018)　2018/08/03
Forming of conformal multilayer on periodic microstructures for solar selective absorption International-presentation

Makoto Shimizu, Hiroki Akutsu, Shinichiro Tsuda, Masafumi Kumano, Hiroo Yugami

18th International Conference on Atomic Layer Deposition　2018/07/30
透明導電酸化物埋め込み微細構造を用いた太陽光選択吸収材料

清水信, 阿部俊郎, 井口史匡, 湯上浩雄

第55回日本伝熱シンポジウム　2018/05/29
太陽熱光起電力発電システムにおけるふく射抽出効率の向上

小桧山朝華, 清水信, 湯上浩雄

第65回応用物理学会春季学術講演会　2018/03/19
透明導電酸化物被覆微細構造を用いた太陽光選択吸収材料の耐熱性評価

清水信, 阿部俊郎, 井口史匡, 湯上浩雄

第65回応用物理学会春季学術講演会　2018/03/19
光レクテナセルを用いたレーザー光受電システム

松浦大輔, 清水信,陳強, 湯上浩雄

第3回宇宙太陽発電シンポジウム　2017/11/29
集光太陽光を用いた熱光起電力発電システムの発電試験

小桧山朝華, 清水信, 湯上浩雄

平成29年度一般社団法人日本太陽エネルギー学会・日本風力エネルギー学会合同研究発表会　2017/10/27
透明導電酸化物膜を用いた高波長選択性太陽光選択吸収材料

清水信, 井口史匡, 湯上浩雄

機械学会東北支部第53回秋季講演会　2017/09/30
熱ふく射スペクトル制御技術を用いた光レクテナシステムにおける光応答ダイオードの特性評価

松浦大輔, 清水信,陳強, 湯上浩雄

機械学会東北支部第53回秋季講演会　2017/09/30
ふく射熱輸送特性と波長選択性の太陽熱光起電力発電システム効率への影響(Ⅱ)

小桧山朝華, 清水信, 湯上浩雄

第７８回応用物理学会秋季学術講演会　2017/09/08
透明導電酸化物被覆微細構造を用いた高温用太陽光選択吸収材料

清水信, 阿部俊郎, 井口史匡, 湯上浩雄

第７８回応用物理学会秋季学術講演会　2017/09/08
High-efficiency solar-thermophotovoltaic systems based on controlling asymmetricity of radiative heat transfer in a monolithic absorber/emitter International-presentation

Asaka Kohiyama, Makoto Shimizu, Hiroo Yugami

Summer Heat Transfer Conference ASME2017　2017/07/11
A Few Layer Coating on Periodic Shallow Microstructures as a Spectrally Selective Absorber International-presentation

Makoto Shimizu, Hiroki Akutsu, Shinichiro Tsuda, Hiroo Yugami

Summer Heat Transfer Conference ASME2017　2017/07/11
High-efficiency Solar-thermophotovoltaic Systems Based on Controlling Unidirectional Radiative Heat Transfer with a Monolithic absorber/emitter International-presentation

Asaka Kohiyama, Makoto Shimizu, Hiroo Yugami

NanoRad2017　2017/06/27
High Spectral Selectivity Based on A Few Layer Structure for Solar-Thermophotovoltaics International-presentation

Makoto Shimizu, Etienne Blandre, Asaka Kohiyama, P. Olivier Chapuis, Rodolphe Vaillon, Hiroo Yugami

NanoRad2017　2017/06/27
ふく射熱輸送特性と波長選択性の太陽熱光起電力発電システム効率への影響

小桧山朝華, 清水信, 湯上浩雄

第64回応用物理学会春季学術講演会　2017/03/17
金属―透明誘電体積層構造による熱ふく射スペクトル制御

清水信, 小桧山朝華, 湯上浩雄

フィジカルセンサ/マイクロマシン・センサシステム研究会　2016/12/19
Optical Design of Few-layer Thermal Radiation Emitters for Thermophotovoltaics International-presentation

Etienne Blandre, Makoto Shimizu, P.-Olivier Chapuis, Rodolphe Vaillon

International Mechanical Engineering Congress & Exposition　2016/11/11
多層膜積層型微細構造による太陽光選択吸収材料

清水信, 阿久津宏樹, 津田慎一郎, 井口史匡, 湯上浩雄

第33回「センサ・マイクロマシンと応用システム」シンポジウム；メタマテリアル・プラズモニック構造　2016/10/24
System design and experiment of solar-thermophotovoltaic generation based on spectrally selective absorber/emitter International-presentation

Hiroo Yugami, Asaka Kohiyama, Makoto Shimizu

Solar PACES 2016 Conference　2016/10/13
High-temperature solar selective absorbers based on a transparent conductive oxide film coated metal microstructures International-presentation

Makoto Shimizu, Toshiro Abe, Fumitada Iguchi, Hiroo Yugami

Solar PACES 2016 Conference　2016/10/13
熱輸送効率向上による太陽熱光起電力発電システムの高効率化

小桧山朝華, 清水信, 湯上浩雄

第77回応用物理学会秋季学術講演会　2016/09/15
金属―誘電体積層構造を用いた高温用太陽光選択吸収材料

清水信, 阿久津宏樹, 津田慎一郎, 井口史匡, 湯上浩雄

第77回応用物理学会秋季学術講演会　2016/09/15
高温フォトニクスによる太陽熱利用技術の高度化 Invited

湯上浩雄, 清水信

第77回応用物理学会秋季学術講演会　2016/09/13
Solar-thermophotovoltaic systems using spectrally selective absorber/emitter based on metal-dielectric multilayer International-presentation

Asaka Kohiyama, Makoto Shimizu, Hiroo Yugami

SPIE Optics + Photonics for Sustainable Energy　2016/05
Tailoring the spectral emissivity of few-layer structures with interference effects International-presentation

E. Blandre, M. Shimizu, P.O. Chapuis, R. Vaillon

WE-Heraeus-Seminar: Heat transfer and heat conduction on the nanoscale　2016/04
熱輻射による半透明体の輻射輸送促進

津田慎一郎, 清水信, 井口史匡, 湯上浩雄

第63回応用物理学会春季学術講演会　2016/03/20
Low-directivity quasi-monochromatic thermal radiation from microcavities covered by thin metal film

Asaka Kohiyama, Makoto Shimizu, Fumitada Iguchi, Hiroo Yugami

ASME 2016 5th International Conference on Micro/Nanoscale Heat and Mass Transfer, MNHMT 2016　2016/01/01

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© 2016 by ASME. Here, closed-end microcavity is proposed in which a semi-transparent metal film was formed atop microcavity. The structure shows weak angular dependence as well as quasimonochromatic absorptance. Au is employed as material of the cavity walls and the covering thin film. Quasi-monochromatic absorption from the structure is observed in numerical simulation. High quality factor (Q factor) is obtained by strong confinement in the closed-end microcavity. Asymmetric and quasi-monochromatic absorption band with a Q factor of ∼28 at 1.85 μm was observed. This value was about 4-fold larger than that of the open-end microcavity. Additionally, the closed-end microcavity structure filled with SiO2in cavity exhibits isotropic and quasi-monochromatic thermal radiation over a wide solid angle. This result suggests that both quasimonochromatic and low-directivity absorptance can be realized by using this configuration.
Spectral control of thermal radiation using metal-dielectric multilayers for high-temperature usage over 1000°C

Makoto Shimizu, Asaka Kohiyama, Fumitada Iguchi, Hiroo Yugami

ASME 2016 5th International Conference on Micro/Nanoscale Heat and Mass Transfer, MNHMT 2016　2016/01/01

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© 2016 by ASME. The spectrally selective coating technology which can be applicable for solar-thermophotovoltaic (solar-TPV) generation systems is described in this paper. In solar-TPV system, the spectrally selective absorber plays a key role to obtain highefficiency. The technologies of controlling thermal radiation spectrum at temperature over 1000oC, however, have not been established yet. We focus on metal-dielectric multi-layer coating. This selective coating shows enormously high absorptance at short wavelength range and sharp cutoff property. Thermal stability test confirms that this multi-layer structure can be one of the candidates for the selective coatings for solar-TPV systems.
Solar-thermophotovoltaic systems using spectrally selective absorber/emitter based on metal-dielectric multilayer

A. Kohiyama, M. Shimizu, H. Yugami

Proceedings of SPIE - The International Society for Optical Engineering　2016/01/01

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© 2016 SPIE. In this paper, high-efficiency STPV systems are investigated using spectrally selective absorber/emitter consisted of metal-dielectric multilayer and a GaSb TPV cell. A solar-thermophotovoltaic (STPV) system is expected to as highefficiency solar energy conversion using single-junction photovoltaic (PV) cells. However, the reached experimental system efficiency has been still low because spectral control of emitter is not sufficient. Narrowband thermal radiation from the emitter is effective for obtaining high-efficiency STPV systems, exceeding the Shockley-Queisser limit. From theoretical analysis, the narrowband thermal emitter can leads to obtain PV conversion efficiency over 45% at Qvalue= 30 and 1300K. The spectrally selective absorber/emitter was also investigated to obtain high ηPV. The ηPV = 23.5% was estimated by the fabricated emitter spectrum, which exceeds the Shockley-Queisser limit of 19.6% for a GaSb bandgap of 0.67 eV. The entire STPV system and the power generation tests were conducted using the fabricated absorber/emitter. The total system efficiency 4.9% at 1505K was obtained under an irradiance of 109 Wcm-2.
A solar thermophotovoltaic system using spectrally controlled monolithic planar thermal emitter/absorber Invited

Hiroo Yugami, Asaka Kohiyama, Makoto Shimizu, Fumitada Iguchi

ASME 2016 5th International Conference on Micro/Nanoscale Heat and Mass Transfer, MNHMT 2016　2016/01/01

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© 2016 by ASME. Solar-thermophotovoltaic system is expected to have high efficiency by converting wide spectral range solar energy into useful thermal radiation energy. However, the experimental STPV system shows much lower efficiency than theoretical one. To achieve high-efficiency, it is essential to obtain good spectrally matching between thermal radiation spectrum and PV cells spectral response. In this paper, the power generation tests using the whole configuration of the STPV system is described. The conversion efficiency of GaSb PV cell is estimated to be 20 to 23% against to the light intensity irradiated on the PV cell surface. The net system efficiency of 1.9% can be achieved. The application of thermal storage system to the STPV is also considered.
熱ふく射スペクトル制御技術を用いた太陽熱光起電力発電システム

小桧山朝華, 清水信, 井口史匡, 湯上浩雄

第76回応用物理学会秋季学術講演会　2015/09/15
マイクロキャビティ構造からの波長選択性熱ふく射スペクトル狭帯域化

小桧山朝華, 清水信, 井口史匡, 湯上浩雄

第62回応用物理学会春季学術講演会　2015/03/13
波長選択性熱放射による狭空間内における電子デバイス冷却技術

津田慎一郎, 清水信, 井口史匡, 湯上浩雄

第62回応用物理学会春季学術講演会　2015/03/11
熱放射スペクトル制御材料を用いた高効率ソーラー熱光起電力発電

清水信, 小桧山朝華, 酒井淳, 柳澤邦彦, 井口史匡, 湯上浩雄

第62回応用物理学会春季学術講演会　2015/03/11
ナローギャップPVセルを用いた熱光起電力発電 Invited

湯上浩雄, 清水信

応用電子物性分科会研究会　2015
固体酸化物形燃料電池用Ni-YSZ サーメットの高温機械特性

KASEMCHAI CHAIPRASOBPHOL, 井口史匡, 清水信, 湯上浩雄

2014年度電気化学会秋季大会　2014/09/27
ソーラー熱光起電力発電における熱放射スペクトル制御材料の高温特性

清水信, 小桧山朝華, 井口史匡, 湯上浩雄

第75回応用物理学会秋季学術講演会　2014/09/17
SOFC/SOEC based on yttrium doped barium zirconate perovskite type proton conductors International-presentation

Takahumi Kumagai, Fumitada Iguchi, Makoto Shimizu, Hiroo Yugami

17th International Conference on Solid State Protonic Conductors (SSPC-17)　2014/09/14
HIGH-TEMPERATURE PHOTONICS FOR ADVANCED SOLAR ENERGY APPLICATIONS International-presentation

Makoto Shimizu, Asaka Kohiyama, Fumitada Iguch, Hiroo Yugami

Grand Renewable Energy 2014 International Conference　2014/07/27
面内圧縮応力状態下における安定化ジルコニアの電気的特性

井口史匡, 山根拓也, 清水信, 湯上浩雄

日本機械学会 M&M2014材料力学カンファレンス　2014/07/18
Application of transparent conductive oxides films for high-temperature solar selective absorbers International-presentation

Asaka Kohiyama, Makoto Shimizu, Hiroaki Kobayashi, Fumitada Iguchi, Hiroo Yugami

ASME 2014 8th International Conference on Energy Sustainability & 12th Fuel Cell Science, Engineering and Technology Conference　2014/06/29
High-efficiency thermophotovoltaic system by quasi-monochromatic thermal radiation International-presentation

Makoto Shimizu, Mari Suzuki, Asaka Kohiyama, Fumitada Iguchi, Hiroo Yugami

ASME 2014 8th International Conference on Energy Sustainability & 12th Fuel Cell Science, Engineering and Technology Conference　2014/06/29
Application of high-temperature photonics for solar energy systems International-presentation

Makoto Shimizu, Asaka Kohiyama, Hiroaki Kobayashi, Mari Suzuki, Fumitada Iguchi, Hiroo Yugami

NanoRad 2014　2014/06/07
高温フォトニクスによるふく射熱輸送の高効率化

清水信, 小桧山朝華, 井口史匡, 湯上浩雄

電気学会マイクロマシン・センサシステム研究会　2014/05/27
10% efficiency solar thermophotovoltaic systems using spectrally controlled monolithic planar absorber/emitters International-presentation

Makoto Shimizu, Asaka Kohiyama, Hiroo Yugami

SPIE photonics europe　2014/04/14
透明導電膜を用いた太陽光選択吸収材料の吸収特性向上

清水信, 鈴木麻里, 井口史匡, 湯上浩雄

第61回応用物理学会春季学術講演会　2014/03/17
GaSb 単接合セルを用いた集光太陽光による高効率熱光起電力発電システム

小桧山朝華, 小林大晃, 清水信, 井口史匡, 湯上浩雄

第61回応用物理学会春季学術講演会　2014/03/17
高ふく射性SiC系繊維を用いた高温炉におけるエネルギー回収

小島匠, 酒井淳, 清水信, 井口史匡, 湯上浩雄

第5回マイクロ・ナノシンポジウム　2014/03/14
Thermal management of power sources for mobile electronic devices based on micro-SOFC

S. Murayama, F. Iguchi, M. Shimizu, H. Yugami

Journal of Physics: Conference Series　2014/01/01

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© Published under licence by IOP Publishing Ltd. Small power sources based on micro-SOFC for mobile electronic devices required two conditions, i,e, thermally compatibility and thermally self-sustain, because of high operating temperature over 300oC. Moreover, high energy efficiency was also required. It meant that this system should be designed considering thermal management. In this study, we developed micro-SOFC packages which have three functions, thermal insulation, thermal recovery, and self-heating. Heat conduction analysis based on finite element method, and thermochemical calculation revealed that vacuum thermal insulation was effective for size reduction and gas-liquid heat exchanger could reduce the temperature of outer surface. We fabricated the package with three functions for proof of concept and evaluated. As a result, it was suggested that developed package could satisfy both two requirements with high efficiency.
Application of transparent conductive oxides films for high-temperature solar selective absorbers

Makoto Shimizu, Mari Suzuki, Asaka Kohiyama, Fumitada Iguchi, Hiroo Yugami

ASME 2014 8th International Conference on Energy Sustainability, ES 2014 Collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology　2014/01/01

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Copyright © 2014 by ASME. At present, the utilization of thermal energy from sunlight has been widely adopted as the working principle of concentrated solar power (CSP) generation systems. In this research, we suggest a CSP technology based on the properties of transparent conductive oxide (TCO) films on metal substrates which is compatible with mass production of solar selective absorbers that can be utilized at high temperatures. TCO material has plasma wavelength in infrared region. Therefore the electromagnetic wave with shorter wavelength than plasma wavelength goes through the material, while the electromagnetic wave with longer wavelength is reflected on the surface. By coating metal surface with a TCO film, interference is occurred in transparent wavelength range of TCO. Therefore, solar energy is highly absorbed, though thermal radiation from the absorber is suppressed. The optical property of fabricated TCO coated metal is well consistent with the simulated property. It is revealed that the performance of the absorber is improved by fabricating microstructures on the metal substrate. Thermal stability is confirmed at 700°C in vacuum for 3 hours. Solar absorptance and hemispherical emittance of the fabricated absorber are 0.82 and 0.17, respectively, which is comparable to that of commercialized absorbers.
High-efficiency thermophotovoltaic system by quasi-monochromatic thermal radiation

Asaka Kohiyama, Makoto Shimizu, Hiroaki Kobayashi, Fumitada Iguchi, Hiroo Yugami

ASME 2014 8th International Conference on Energy Sustainability, ES 2014 Collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology　2014/01/01

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Copyright © 2014 by ASME. Efficiency of solar-thermophotovoltaic (TPV) systems can be improved by controlling spectral property of thermal radiation to match the photovoltaic (PV) cells spectral response. We developed a spectrally selective emitter which can emit quasi-monochromatic thermal radiation to improve the efficiency of TPV systems. From the evaluation by the detailed-balance model for gallium antimonite (GaSb) TPV cells, the photovoltaic conversion efficiency over 50 % is achievable in the case of the emitter temperature over 1800K and emitter Q-value over 15. The numerical simulation based on Rigorous-Coupled Wave Analysis revealed that the quasi-monochromatic thermal radiation can be obtained by closed-end microcavity structure. A solar-TPV system equipped with a solar-simulator is fabricated to evaluate the effect of spectrally selective emitter. By using GaSb TPV cells and spectrally selective emitter based on dielectric layer coating, photovoltaic conversion efficiency of 26% and total efficiency of 7.7% are obtained at emitter temperature of 1654 K under 384 suns.
A solar thermophotovoltaic generation with a monolithic planar absorber/emitter material

Hiroaki Kobayashi, Jun Sakai, Asaka Kohiyama, Makoto Shimizu, Fumitada Iguchi, Hiroo Yugami

Optics InfoBase Conference Papers　2013/12/01

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A planar absorber/emitter in solar thermophotovoltaic system reaches high temperature with a small concentration ratio because of low thermal radiation loss. Using this planar absorber/emitter, the net efficiency is estimated to be 21%. Renewable Energy and the Environment Congress © 2013.
A solar thermophotovoltaic generation with a monolithic planar absorber/emitter material

Hiroaki Kobayashi, Jun Sakai, Asaka Kohiyama, Makoto Shimizu, Fumitada Iguchi, Hiroo Yugami

Optics InfoBase Conference Papers　2013/12/01

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A planar absorber/emitter in solar thermophotovoltaic system reaches high temperature with a small concentration ratio because of low thermal radiation loss. Using this planar absorber/emitter, the net efficiency is estimated to be 21%. Renewable Energy and the Environment Congress © 2013.
A solar thermophotovoltaic generation with a monolithic planar absorber/emitter material

Hiroaki Kobayashi, Jun Sakai, Asaka Kohiyama, Makoto Shimizu, Fumitada Iguchi, Hiroo Yugami

Optics InfoBase Conference Papers　2013/12/01

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A planar absorber/emitter in solar thermophotovoltaic system reaches high temperature with a small concentration ratio because of low thermal radiation loss. Using this planar absorber/emitter, the net efficiency is estimated to be 21%. Renewable Energy and the Environment Congress © 2013.
Practicable fabrication technology of high-temperature photonic materials for thermophotovoltaic systems International-presentation

Makoto Shimizu, Hiroaki Kobayashi, Kunihiko Yanagisawa, Fumitada Iguchi, Hiroo Yugami

2013 Renewable Energy and the Environment Meeting　2013/11/03
A Solar Thermophotovoltaic Generation with a Monolithic Planar Absorber/emitter Material International-presentation

Hiroaki Kobayashi, Jun Sakai, Asaka Kohiyama, Makoto Shimizu, Fumitada Iguchi, Hiroo Yugami

2013 Renewable Energy and the Environment Meeting　2013/11/03
High-temperature solar selective absorbers using transparent conductive oxide coated metal International-presentation

Makoto Shimizu, Mari Suzuki, Fumitada Iguchi, Hiroo Yugami

2013 ISES Solar World Congress　2013/11/03
High-temperature photonics using self-organization of superalloys for solar selective absorbers International-presentation

Makoto Shimizu, Kiyotaka Konno, Hiroaki Kobayashi, Fumitada Iguchi, Hiroo Yugami

2013 ISES Solar World Congress　2013/11/03
Spectrally Controlled Thermal Radiation Based on Surface Microstructures for High-Efficiency Solar Thermophotovoltaic System International-presentation

Asaka Kohiyama, Hiroaki Kobayashi, Makoto Shimizu, Fumitada Iguchi, Hiroo Yugami

2013 ISES Solar World Congress　2013/11/03
Relationship between Electrical Properties and Stress Field in Solid Electrolyte Thin Films International-presentation

Yohei Osawa, Fumitada Iguchi, Makoto Shimizu, Hiroo Yugami

13th international symposium on Solid Oxide Fuel Cells (SOFC-XIII)　2013/10/06
Evaluation of Stress Condition of Operated Anode Supported-Type SOFC under Operating Conditions Based on Raman Scattering Spectroscopy International-presentation

Shoma Onuki, Syo Onodera, Fumitada Iguchi, Makoto Shimizu, Tatsuya Kawada, Hiroo Yugami

13th international symposium on Solid Oxide Fuel Cells (SOFC-XIII)　2013/10/06
Stress Conditions Transition by Thermal Annealing in Barium Zirconate Based Proton Conducting Thin Films Fabricated Using PLD Method International-presentation

Taro Fukushige, Fumitada Iguchi, Makoto Shimizu, Hiroo Yugami

13th international symposium on Solid Oxide Fuel Cells (SOFC-XIII)　2013/10/06
Design and fabrication of micro SOFC for the power source of mobile electric devices International-presentation

Shoya Murayama, Fumitada Iguchi, Yu Inagaki, Makoto Shimizu, Shuji Tanaka, Hiroo Yugami

13th international symposium on Solid Oxide Fuel Cells (SOFC-XIII)　2013/10/06
Ni 基超合金の自己組織化に基づく熱輻射スペクトル制御材料の作製

清水信, 今野晴天, 小林大晃, 井口史匡, 湯上浩雄

第74回応用物理学会秋季学術講演会　2013/09/16
透明導電膜を用いた太陽光選択吸収材料のカットオフ波長制御

鈴木麻里, 清水信, 井口史匡, 湯上浩雄

第74回応用物理学会秋季学術講演会　2013/09/16
Residual Stress and Strain in Thin Films Fabricated Using PLD Method International-presentation

Fumitada Iguchi, Yohei Osawa, Taro Fukushige, Hiroo Yugami

19th International Conference on Slid State Ionics (SSI-19)　2013/06/02
Ni 基超合金の自己組織化による周期的微細構造作製

清水信, 今野晴天, 小林大晃, 井口史匡, 湯上浩雄

第60回応用物理学会春季学術講演会　2013/03/27
透明導電酸化物膜を用いた太陽光選択吸収材料

鈴木麻里, 清水信, 井口史匡, 湯上浩雄

第61回応用物理学会春季学術講演会　2013/03/27
A solar thermophotovoltaic generation with a monolithic planar absorber/emitter material

Hiroaki Kobayashi, Jun Sakai, Asaka Kohiyama, Makoto Shimizu, Fumitada Iguchi, Hiroo Yugami

Optics InfoBase Conference Papers　2013/01/01

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A planar absorber/emitter in solar thermophotovoltaic system reaches high temperature with a small concentration ratio because of low thermal radiation loss. Using this planar absorber/emitter, the net efficiency is estimated to be 21%. Renewable Energy and the Environment Congress © 2013.
Practicable fabrication technology of high-temperature photonic materials for thermophotovoltaic systems

Makoto Shimizu, Hiroaki Kobayashi, Kunihiko Yanagisawa, Fumitada Iguchi, Hiroo Yugami

Optics InfoBase Conference Papers　2013/01/01

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The high-temperature photonic materials fabricated by practicable technology is described. The high-temperature photonic material using self-organization of a super-alloys and a monolithic planer absorber/emitter with multi-layer coating is obtained. Renewable Energy and the Environment Congress © 2013.
A solar thermophotovoltaic generation with a monolithic planar absorber/emitter material

Hiroaki Kobayashi, Jun Sakai, Asaka Kohiyama, Makoto Shimizu, Fumitada Iguchi, Hiroo Yugami

Optics InfoBase Conference Papers　2013/01/01

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A planar absorber/emitter in solar thermophotovoltaic system reaches high temperature with a small concentration ratio because of low thermal radiation loss. Using this planar absorber/emitter, the net efficiency is estimated to be 21%. Renewable Energy and the Environment Congress. © 2013.
透明導電酸化物の太陽光選択吸収材料への応用

清水信, 今野晴天, 井口史匡, 湯上浩雄

平成24年度日本太陽エネルギー学会・日本風力エネルギー学会・Korea Solar Energy Society合同研究発表会　2012/11/07
周期的微細構造を持つ耐熱性合金を用いた太陽光選択吸収材料の作製

今野晴天, 清水信, 井口史匡, 湯上浩雄

平成24年度日本太陽エネルギー学会・日本風力エネルギー学会・Korea Solar Energy Society合同研究発表会　2012/11/07
High-Temperature Solar Selective Absorbers Based on Interface Effects in Refractory Metals Coated with Transparent Conductive Oxides International-presentation

M. Shimizu, F. Iguchi, H. Yugami

ASME 2012 6th International Conference on Energy Sustainability & 10th Fuel Cell Science, Engineering and Technology Conference　2012/07/23
Application Technologies of Spectrally Controlled Thermal Radiation Using Microstructures for Energy Systems International-presentation

M. Shimizu, F. Iguchi, H. Yugami

International Workshop on Nano-Micro Thermal Radiation　2012/05/23
High-temperature solar selective absorbers based on interface effects in refractory metals coated with transparent conductive oxides

Makoto Shimizu, Fumitada Iguchi, Hiroo Yugami

ASME 2012 6th International Conference on Energy Sustainability, ES 2012, Collocated with the ASME 2012 10th International Conference on Fuel Cell Science, Engineering and Technology　2012/01/01

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At present, the utilization of thermal energy from sunlight has been widely adopted as the working principle of concentrated solar power (CSP) generation systems. In this research, we suggest a CSP technology based on the properties of transparent conductive oxide (TCO) thin films on metal substrates which is compatible with mass production of solar selective absorbers that can be utilized at high temperatures. Since the plasma wavelength of TCO materials is in the infrared region, electromagnetic waves with wavelengths longer than the plasma wavelength are reflected at the surface, whereas electromagnetic waves with shorter wavelengths pass through the surface layer and reach the substrate. In other words, a TCO thin film behaves as an antireflection film only in the transparency range of TCO coating. This phenomenon is demonstrated through numerical simulations based on rigorous coupled-wave analysis (RCWA). The prepared samples also show favorable spectral selectivity and satisfactory performance as solar selective absorbers, with a solar absorptance of 0.76, a thermal emittance of 0.12 at 800°C and a spectral selectivity of 6.5 at 800°C. Copyright © 2012 by ASME.
高温フォトニクス材料による太陽エネルギー利用

湯上浩雄, 清水信, 前神有里子, 井口史匡

応用物理学会東北支部第66回学術講演会特別シンポジウム　2011/12/03
High-temperature solar selective absorber material using surface microcavity structures

Makoto Shimizu, Kimio Takeuchi, Hitoshi Sai, Fumitada Iguchi, Noriko Sata, Hiroo Yugami

ASME 2011 5th International Conference on Energy Sustainability, ES 2011　2011/12/01

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The spectral properties of thermal radiation can be controlled by surface microstructures with feature size in the optical wavelength range. We applied this technology to solar selective absorbers for concentrated solar power (CSP) generation systems. We investigated the spectral properties and thermal stability of two-dimensional periodic microstructures on a tungsten (W) surface to develop solar selective absorbers for high-temperature applications. The developed absorbers exhibited good spectral selectivity and sufficient thermal stability under vacuum. Although we could verified that the microstructured solar selective absorbers improved CSP efficiency, this method cannot be put into practical use because of cost and time, and also because there is currently no technology for fabricating surface gratings on high melting point materials over a large area. Therefore, we used W-Cu alloys to investigate an approach to mass production of surface microcavity structures over a large area. We then confirmed that the absorptivity in the visible light range could be increased by using this simple method. Copyright © 2011 by ASME.
Development of High Temperature Solar Selective Absorber Using Refractory Material with Surface Microstructures International-presentation

Makoto Shimizu, Kimio Takeuchi, Hitoshi Sai, Fumitada Iguchi, Hiroo Yugami

8th International Conference on Flow Dynamics　2011/11/09
金属-絶縁体相転移物質を用いた環境応答型波長選択性熱輻射の空間熱制御への適用

清水信, 井口史匡, 湯上浩雄

2011年秋季第72回応用物理学会学術講演会　2011/08/28
High Temperature Solar Selective Absorber Material Using the Surface Microcavity Structures International-presentation

M. Shimizu, K. Takeuchi, H. Sai, F. Iguchi, N. Sata, H. Yugami

ASME 2011 5th International Conference on Energy Sustainability & 9th Fuel Cell Science　2011/08/07
波長選択性太陽光吸収材料としての周期的微細構造を持つ耐熱性合金の作製

今野晴天, 清水信, 井口史匡, 湯上浩雄

東北支部第47期総会・講演会　2011/03/13
Application of thermal radiation control by surface gratings to advance cooling system for electronic devices International-presentation

M. Shimizu, H. Yugami

7th International Conference on Flow Dynamics　2010/11
Application of thermal radiation control by surface gratings to energy efficient windows International-presentation

M. Shimizu, T. Kawano, F. Iguchi, H. Yugami

Renewable Energy 2010　2010/07
電子デバイス冷却への波長選択性熱放射の適用

清水信, 湯上浩雄

東北支部第46期総会・講演会　2010/03/12
123 Enhancement of cooling electronic devices by spectrally selective thermal radiation

Shimizu Makoto, Yugami Hiroo

The Proceedings of Conference of Tohoku Branch　2010
Application of Spectral Selective Thermal Radiation for Cooling Electronic device Packaged in Resin International-presentation

M. Shimizu, H. Yugami

6th International Conference on Flow Dynamics　2009/11/04
波長選択性熱放射による樹脂パッケージされた電子デバイスの冷却促進

清水信, 湯上浩雄

日本機械学会 2009年度年次大会　2009/09/14
熱放射スペクトル制御による樹脂パッケージされた電子デバイスの冷却促進

清水信, 湯上浩雄

第56回応用物理学関係連合講演会　2009/03/29
J0103-4-2 Enhancement of cooling electronic devices by spectrally selective thermal radiation

Shimizu Makoto, Yugami Hiroo

The Proceedings of Mechanical Engineering Congress, Japan　2009

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This paper describes the new technique of cooling electronic devices packaged in resin. In recent years, cooling electronic devices becomes very serious problem. To enhance thermal radiation from electronic devices, this problem is improved because 20%-40% of heat is dissipated by radiative heat transfer. We report new technique about cooling electronic devices to control radiative spectra from its surface. Resin which packages an electronic device prevents radiation from going outside air. We consider that radiation from electronic devices transmits resin to control radiative spectra. As a result, cooling performance improved. A spectral selective emitter which consists of periodical micron meter scale two-dimensional grating on metal surface can control radiative spectra. In this research, we decide an optimal selective emitter design from simulation and fabricated it by micro-machining technology. Finally, the fact that using spectral selective emitter enhanced cooling performance is obtained from cooling performance test.
波長選択性熱放射によるパッケージされた電子デバイスからの排熱促進

清水信, 湯上浩雄, 吉岡文孝, 豊永隆

第69回応用物理学会学術講演会　2008/09/04
光レクテナのための酸素不定比性制御に基づくホモ界面MIIMダイオード(II)

松浦大輔, 清水信, 湯上浩雄

第67回応用物理学会春季学術講演会

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Industrial Property Rights 4

宇宙用放熱素子及びその設計方法と製造方法

佐々木浩司, 高田昭夫, 松野雄介, 安藤麻紀子, 田中洸輔, 矢部高宏, 湯上浩雄, 清水信

Property Type: Patent
ナノインプリント方法によるアルミニウムシートからなる波長選択性熱放射材料の製造方法

湯上浩雄, 清水信, 豊永隆, 木村直史, 吉岡文孝

Property Type: Patent
熱吸収材及びその製造方法

山田隆俊, 高田昭夫, 湯上浩雄, 井口史匡, 清水信

特許第6224345号

Property Type: Patent
波長選択性熱放射または熱吸収材料の製造方法

湯上浩雄, 井口史匡, 清水信

特許第5725658号

Property Type: Patent

Research Projects 16

コヒーレント近接場熱放射誘起共鳴電場振動の一方向抽出による革新的熱発電

清水信, LIU ZHEN

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 基盤研究(B)

Institution: 東北大学

2024/04/01 - 2028/03/31
Advanced hydrogen production using thermo-photo chemical reactions

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (B)

Institution: Tohoku University

2023/04/01 - 2026/03/31
光波発電を用いた赤外光エネルギー利用

清水信

Offer Organization: 国立研究開発法人新エネルギー・産業技術総合開発機構

System: ＮＥＤＯ先導研究プログラム

Category: 2020年度／ 2020年度未踏チャレンジ２０５０

Institution: 国立大学法人東北大学

2020/10 - 2025/09
再結晶強化組織とイオン注入組織安定化による「再結晶脆化しない」超耐熱金属の新創生

野上修平, 能登裕之, 清水信

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 挑戦的研究(萌芽)

Institution: 東北大学

2022/06/30 - 2025/03/31
シリコン太陽電池を用いた中小規模廃棄物焼却炉における熱発電技術

清水信

Offer Organization: 独立行政法人環境再生保全機構

System: 環境研究総合推進費

Institution: 東北大学

2024/04 - 2025/03
Enhancement of methane reforming hydrogen production reaction using plasmon-induced charge separation by thermal radiation standing wave resonance

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Challenging Research (Exploratory)

Institution: Tohoku University

2021/07/09 - 2024/03/31
固体イオン導電体における結晶学的力学因子の解明

井口史匡, 清水信

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 基盤研究(B)

Institution: 日本大学

2021/04/01 - 2024/03/31

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申請者の異動に伴い2021年度は東北大と日本大学で分かれて研究を遂行せざる負えなくなり，研究の実施計画を変更し研究を行った。実施計画は既有装置の改良と力学因子の測定であり大きく3つに分けた。1つ目はレーザドップラー計を購入，in-situでひずみと導電率が同時計測可能な装置へのアップグレードとそれによる酸化物イオン導電体の力学因子の評価，2つ目は二軸で弾性波を導入可能となるよう弾性波を用いた実験装置の改良，3つ目はガーネット型，ペロブスカイト型，リン酸型等のリチウムイオン導電体に対して既有の装置を用いた力学因子の評価であった。レーザドップラー振動計を用いたひずみの計測は既有の装置に追加しただけでは，振動変位に導波管の軸方向振動に加え，軸に垂直方向の大きな振動変位が加わり正確な評価が行えず，装置に用いた導波管の交換を余儀なくされたが最終的には，軸方向の弾性波により物質に加わるひずみのin-situ評価が行えるようになり，酸化物イオン導電体でのひずみ，導電率の同時計測を行うことができ力学因子の評価を行うことができた。また，2つ目の二軸で弾性波を導入する装置へのアップグレードについては導入される二軸ひずみの正確な評価には二軸に加え斜め方向の三軸のひずみを評価する必要があったため，今年度はそれを考慮したアップグレード方法の検討までを行った。 In-situ計測，二軸導入の双方について問題が生じ，その解決に時間を要したため3つ目のリチウムイオン導電体の力学因子の評価は弾性波では行わず，粉体プレスを用いた等方圧を用いた行った。ガーネット型，ペロブスカイト型，リン酸型の異なる結晶構造を持つ3種において最大250MPaの等方圧を印加し導電率を計測した結果，導電率の変化率は導電体毎に異なり，さらに結晶構造と導電経路の双方と関連があることが明らかになった。
Self-aligned amorphous nanostructure patterns for large-area metasurface

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (C)

Institution: Tohoku University

2021/04/01 - 2024/03/31
熱光起電力発電を用いた廃棄物発電技術の開発

山田裕史, 掃部宏文, 湯上浩雄, 清水信

Offer Organization: 国立研究開発法人新エネルギー・産業技術総合開発機構

System: ベンチャー企業等による新エネルギー技術革新支援事業（旧：新エネルギーベンチャー技術革新事業）

Institution: 株式会社プランテック、国立大学法人東北大学

2018/04 - 2021/01
Controlling of thermal radiation spectrum using super-insulation multilayer photonic crystals composed of silica aerogel

Shimizu Makoto

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists

Category: Grant-in-Aid for Early-Career Scientists

Institution: Tohoku University

2018/04/01 - 2020/03/31

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Generally, energy transport of thermal radiation is determined by the temperature and physical properties of the materials, but it is possible to transport energy effectively by controlling the wavelength distribution (spectrum) of the thermal radiation intensity. The “photonic structure” can be made to have almost zero transmittance in a specific wavelength region by using a periodic multilayer film. In this research, we realize a photonic structure using silica-aerogel with extremely low refractive index and thermal conductivity. This device makes it possible to extract only heat radiation in a specific wavelength range, because heat transfer from the surface is small. This makes it possible to realize highly efficient heat transfer control using only effective heat radiation, which is not possible with conventional technologies.
High-efficiency solar-thermophotovoltaic power generation systems using thermal diode based on controlling of thermal radiation spectrum

Hiroo Yugami, Iguchi Fumitada

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

Category: Grant-in-Aid for Scientific Research (A)

Institution: Tohoku University

2016/04/01 - 2019/03/31

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Solar-thermophotovoltaic (TPV) are expected as an advanced solar energy conversion systems because they potentially have conversion efficiency as high as that with multi-junction cells even with single junction cells and also have high affinity to thermal storage systems. We developed thermal diode technology based on controlling of thermal radiation spectrum which is important to lead the incident solar power toward TPV cell with high-efficiency. Based on this technology, the solar-TPV system could achieve the world highest record conversion efficiency of 5.6% using GaSb TPV cells. We also revealed the conversion efficiency could be more than 20% with our system.
High-efficiency rectenna solar cell based on quasi monochromatic conversion of sunlight

Yugami Hiroo, Iguchi Fumitada

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

Category: Grant-in-Aid for Challenging Exploratory Research

Institution: Tohoku University

2015/04/01 - 2018/03/31

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Optical rectenna is a new photo-voltaic conversion system that expected to break through the limit efficiency of existing system. The most important technology to realize this device is ultra-high speed diodes to rectify optical light frequency (>100THz) and controlling broad solar spectrum into narrow band emission. In this study, we developed a technique to control broad thermal radiation spectrum into quasi-monochromatic thermal emission. For the diode, we suppose to apply geometrical e-field enhancement in order to improve response frequency and quantum efficiency of Metal-Insulator-Metal (MIM) tunnel diode that is one of the most hopeful rectifier for optical rectenna.
樹脂窓領域を利用した電子デバイスの波長選択熱放射冷却

清水信

Offer Organization: 公益財団法人村田学術振興財団

System: 研究助成

Institution: 国立大学法人東北大学

2016/10 - 2017/09
高温フォトニクスを用いた高度太陽エネルギー利用

湯上浩雄、井口史匡、清水信

Offer Organization: 国立研究開発法人科学技術振興機構

System: 先端的低炭素化技術開発（ALCA）

Institution: 国立大学法人東北大学

2011/10 - 2017/03
Advanced energy devices based on suppression of thermal radiation in infrared range at high-temperature operation

Shimizu Makoto

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)

Category: Grant-in-Aid for Young Scientists (B)

Institution: Tohoku University

2014/04/01 - 2016/03/31

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In this research, we try to realize high-performance spectrally selective emitter at high-temperature by suppressing emission property in infrared range. Main achievements are shown in followings. (1) Systematization of fundamental knowledges on the device controlling thermal radiation spectrum with considering oxidization of refractory metals. (2) Understanding of degradation mechanism on spectrally selective property of Ni based superalloys. (3) Detail analysis on high spectrally selective emission properties of metal-dielectric multilayer structure based on the knowledge from Ni-based superalloys, and evaluation of the fabricated multilayer structures. (4) Demonstration of high-temperature stability of the multilayer structures.
耐熱超合金の自己組織化によるバルク3次元フォトニック結晶創製

清水信

Offer Organization: 日本学術振興会

System: 科学研究費助成事業特別研究員奨励費

Category: 特別研究員奨励費

Institution: 東北大学

2011 - 2012

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本研究の目的はエネルギーシステムの高効率化を目的とした熱輻射スペクトル制御デバイスのためのバルク耐熱金属における周期的微細構造大面積作製技術の確立である。耐熱金属は加工が難しく、既存の微細構造作製技術では大面積作製が難しい。それに代用し得る大面積作製技術として、本研究では金属の自己組織化を用いたバルク3次元フォトニック結晶の作製に関する基盤技術に関して研究を行ってきた。最終年度の研究計画は組織形態のコントロールによる3次元構造の作製および研究成果のまとめとなる学位論文の執筆である。3次元構造作製のためには深さ方向へのエッチングと構造不均一性の解消という二つの課題を解決する必要があった。深さ方向へエッチングを進めるためには異方性エッチングが必要であり、今回はウェットエッチングとFAB加工を組み合わせてエッチングを行った。具体的にはウェットエッチングで表面に2次元周期的微細構造を作製した後、FAB加工によって構造の床部分をエッチングし、さらに2層目をウェットエッチングするという方法で加工を行った。その結果、表層だけではなく、2層目以降も選択的にエッチングが可能であることが示唆された。この加工を精度良く行うためには分離組織の均一性が重要であると考えられる。自己組織化による2層分離組織を利用するため、半導体作製プロセス等によって作製された構造と比較すると、構造サイズ、分布のばらつきが生じてしまうが、数値計算によりそれらの標準偏差を求め、熱処理条件を変化させることで均一化を行った。その結果、時効熱処理を2回行うことで構造サイズの不均一性が抑制され理論値と同等のものが得られるという結果が示唆された。以上、得られた結果はバルク金属3次元フォトニック結晶作製法の基盤技術として重要な成果である。この技術を用いることでエネルギーシステムの高効率化に向けた多様な熱輸送の制御方法が達成できると考えている。

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