The University of Tokyo, Hitosugi lab (Solid-state chemistry lab)

Research interest

• Metal hydride
• Reactive magnetron sputtering
• High pressure synthesis

Academic

• 2019.03: M. S. in Engineering, Tokyo Institute of Technology
• 2017.03: B. S. in Engineering, Tokyo Institute of Technology

Professional Experience

• 2020.04 - present: JSPS Research Fellowship (DC2)

Selected Recognition

• 2021.10: The 62nd High Pressure Conference of Japan Poster Award
• 2021.01: The 12th Lecture on ferroic and its operation Excellent Poster Award
• 2019.06: The 4th SSCF Meeting Grand Prize
• 2019.04: JVSS Kanto 2019 Meeting Excellent Presentation Award
• 2018.11: The 15th Hydrogen Quantum Atomics Workshop / The 1st Hydrogenomics Workshop
  　　　　　Young Scientist Presentation Award
• 2017.11: The 43rd JSAP Young Scientist Presentation Award
• 2017.04: SSSJ 2nd Kanto Chapter Meeting Poster Award
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  For other awards and more detailed profiles, please click here.

Selected Papers

• "Polarity reversal of the charge carrier in tetragonal TiH_x (x = 1.6-2.0) at low temperatures"
  

  Ryota Shimizu, Yuki Sasahara, Ikutaro Hamada, Hiroyuki Oguchi, Shohei Ogura, Tetsuroh Shirasawa, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Shin-ichi Orimo, Katsuyuki Fukutani, and Taro Hitosugi
  Phys. Rev. Research, 2, 033467 (2020).

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• "The impact of surface roughness on recrystallization of α-Al₂O₃(001) single crystal to α-AlO(OH) diaspore microcrystals"
  

  Yuki Sasahara, Koki Kanatani, Masayuki Matsuhisa, Yuji Wada, Ryota Shimizu, Norimasa Nishiyama and Taro Hitosugi
  ACS Omega, 5, 23520 (2020).

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• "Ultrahigh-pressure fabrication of single-phase α-PbO₂-type TiO₂ epitaxial thin films"
  

  Yuki Sasahara, Koki Kanatani, Hiroaki Asoma, Masayuki Matsuhisa, Kazunori Nishio, Ryota Shimizu, Norimasa Nishiyama, and Taro Hitosugi
  AIP Advances, 10, 025125 (2020).

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• "A hysteresis loop in electrical resistance of NbH_x observed above the β-λ transition temperature"
  

  Yuki Sasahara, Ryota Shimizu, Hiroyuki Oguchi, Kazunori Nishio, Shohei Ogura, Hitoshi Morioka, Shin-ichi Orimo, Katsuyuki Fukutani, and Taro Hitosugi.
  AIP Advances, 9, 015027 (2019).

  Highlight
  Hydrogenomics News Letter
  

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• "Fabrication of atomically abrupt interfaces of single-phase TiH₂ and Al₂O₃"
  

  Ryota Shimizu, Yuki Sasahara, Hiroyuki Oguchi, Kuniko Yamamoto, Issei Sugiyama, Susumu Shiraki, Shin-ichi Orimo, Taro Hitosugi
  APL Materials, 5, 086102 (2017).

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  For all published papers, please click here.

Selected Presentations

• "H^-イオン導電体La₂LiHO₃のエピタキシャル薄膜成長"
  

  笹原 悠輝, 廣瀬 隆, 松井 直喜, 柿木園 拓矢, 鈴木 耕太, 平山 雅章, 中山 亮, 西尾 和記, 清水 亮太, 菅野 了次, 小林 玄器, 一杉 太郎
  第67回応用物理学会春季学術講演会　2020年3月12-15日　上智大学(四谷キャンパス)

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• "Fabrication of High-Pressure-Phase α-PbO₂-type TiO₂ Epitaxial Thin Films via Ultrahigh Pressure Treatment"
  

  Yuki Sasahara, Hiroaki Asoma, Koki Kanatani, Kazunori Nishio, Ryota Shimizu, Norimasa Nishiyama, and Taro Hitosugi
  The 2019 MRS Spring Meeting April 22-26, 2019, Phoenix, USA

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• "[講演奨励賞受賞記念講演] NbH_x (0≦x＜1)エピタキシャル薄膜の構造相転移と電子伝導特性"
  

  笹原 悠輝, 清水 亮太, 小倉 正平, 西尾 和記, 杉山 一生, 大口 裕之, 福谷 克之, 折茂 慎一, 一杉 太郎
  第65回応用物理学会春季学術講演会　2018年3月17-20日　早稲田大学（西早稲田キャンパス）

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• "Orientation control of metal hydride epitaxial thin films"
  

  Yuki Sasahara, Ryota Shimizu, Rie Nakanishi, Issei Sugiyama, Kazunori Nishio, Hiroyuki Oguchi, Shin-ichi Orimo, and Taro Hitosugi
  The 8th International Symposium on Surface Science October 22-26, 2017, Tsukuba JPN

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• "TiH₂エピタキシャル薄膜の配向制御と電子輸送特性評価"
  

  笹原 悠輝, 清水 亮太, 中西 利栄, 杉山 一生, 西尾 和記, 大口 裕之, 折茂 慎一, 一杉 太郎
  第78回応用物理学会秋季学術講演会　2017年9月5-8日　福岡国際会議場

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  For all presentations, please click here.