Rchr
J-GLOBAL ID：202201016294821761
Update date: Jun. 27, 2024
Okawa Ayahisa
オオカワ アヤヒサ | Okawa Ayahisa
Affiliation and department：
Job title：
Assistant Professor
Research field (2)：
Material fabrication and microstructure control
, Inorganic compounds/materials chemistry
Research keywords (3)：
MAX phases
, MXene
, Rare earth
Research theme for competitive and other funds (5)：
- 2023 - 2026 Development of a highly efficient method of utilising dielectrics with smart pulse power supplies
- 2024 - 2026 非晶質希土類珪酸塩の相転移挙動と新亀裂修復メカニズム
- 2020 - 2025 Creation and construction of basic technologies of indium-free functional nanomaterials for smart windows
- 2023 - 2025 Development of Crack Healing Mechanism Pioneered by Metastable Phase Sintered Materials
- 2023 - Thermal property measurements and phase transition behavior of rare earth silicates for optimization of thermal spraying and heat treatment of environmental barrier coatings
Papers (17)：
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Yibei Xue, Lei Miao, Peng Song, Takuya Hasegawa, Ayahisa Okawa, Ryo Maezono, Tohru Sekino, Shu Yin. Unveiling the NIR modulation performance enhancement of VO2 endowed by oxygen vacancy elimination. Solar Energy Materials and Solar Cells. 2024. 274. 113007-113007
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Yibei Xue, Lei Miao, Takuya Hasegawa, Ayahisa Okawa, Shunya Yoshino, Hideki Kato, Masato Kakihana, Shu Yin. Uncovering the distinctive phase transition characteristics and thermochromic performance of VO2 with different N-doping sites. Applied Surface Science. 2024. 657. 159779-159779
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Ayahisa Okawa, Son Thanh Nguyen, Tadachika Nakayama, Thi-Mai-Dung Do, Hisayuki Suematsu, Shu Yin, Takuya Hasegawa, Tsuneo Suzuki, Takashi Goto, Koichi Niihara. High-temperature corrosion of sintered RE2Si2O7 (RE = Yb and Ho) environmental barrier coating materials by volcanic ash. International Journal of Minerals, Metallurgy and Materials. 2024. 31. 7. 1628-1638
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Suzuka Noda, Takuya Hasegawa, Tomoyo Goto, Yasushi Sato, Ayahisa Okawa, Shu Yin. Acquisition of Emissive Single-Crystalline <i>A</i>Eu(MoO<sub>4</sub>)<sub>2</sub> (<i>A</i> = Na, K, Rb, and Cs) Double Molybdates by One-Pot Hydrothermal Synthesis: Relationship between Particle Morphology and Photoluminescence Properties. Crystal Growth & Design. 2024
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Son Thanh Nguyen, Ayashisa Okawa, Thi-Mai-Dung Do, Chu Minh Ngo, Tsuyoshi Takahashi, Tadachika Nakayama, Hisayuki Suematsu, Koichi Niihara. Self-healing ability and full strength recovery at medium temperatures of low content titanium carbide/alumina composites. Journal of the Ceramic Society of Japan. 2024. 132. 3. 85-92
ｍore...
MISC (1)：
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Son Thanh Nguyen, Ayahisa Okawa, Hirokazu Iwasawa, Tadachika Nakayama, Hideki Hashimoto, Tohru Sekino, Hisayuki Suematsu, Koichi Niihara. Inside Front Cover. Advanced Materials Interfaces. 2021. 8. 22. 2170126-2170126
Books (1)：
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Development Trends of Smart Windows
2023 ISBN:9784781317465
Lectures and oral presentations (18)：
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希土類珪酸塩ガラスへの熱処理による微細構造進化の観察
(日本希土類学会 第40回希土類討論会 2024)
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Yb2Si2O7およびHo2Si2O7の高温火山灰腐食挙動の観察
(日本セラミックス協会 2024年年会 2024)
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Mechanical properties and self-healing mechanism of SiC dispersed Yb2Si2O7 composite
(48th International Conference and Expo on Advanced Ceramics and Composites (ICACC2024) 2024)
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Control of Surface Functional Groups and Room Temperature Gas Sensing Behavior of Nb2CTx
(The 37th International Korea-Japan Seminar on Ceramics (KJ-Ceramics 37) 2023)
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Control of gas sensing behavior based on various etching methods of MXene
(The 3rd USTB-TU Symposium 2023)
ｍore...
Education (4)：
- 2019 - 2022 Nagaoka University of Technology Graduate School of Engineering Department of Science of Technology Innovation
- 2018 - 2019 Nagaoka University of Technology Graduate School of Engineering Department of Mechanical Engineering
- 2016 - 2018 Nagaoka University of Technology Faculty of Engineering Mechanical Engineering
- 2011 - 2016 Tomakomai National College of Technology Mechanical Engineering
Professional career (3)：
- Doctor of engineering (Nagaoka University of Technology)
- Bachelor of engineering (Nagaoka University of Technology)
- Foundation degree (Tomakomai National College of Technology)
Work history (5)：
- 2022/10 - 現在 Tohoku University Institute of Multidisciplinary Research for Advanced Materials Center for Exploration of New Inorganic Materials Environmental Inorganic Materials Chemistry Assistant Professor
- 2020/02 - 2020/03 Friedrich-Alexander Universität Erlangen-Nürnberg Department of Materials Science and Engineering
- 2017/12 - 2018/02 Indira Gandhi Centre for Atomic Research Mechanical Metallurgy Division
- 2017/09 - 2017/11 Indian Institute of Technology Madras Department of Metallurgical and Materials Engineering
- 2017/02 - 2017/03 Indian Institute of Technology Madras Department of Metallurgical and Materials Engineering
Awards (6)：
Association Membership(s) (2)：
The Ceramic Society of Japan
, The American Ceramic Society
