Seki Takehito

セキタケヒト | Seki Takehito

Affiliation and department：
Other affiliations (1)：

Japan Science and Technology Agency PRESTO

Research field (3)： Inorganic materials , Metallic materials , Nanomaterials

Research keywords (9)： scanning transmission electron microscopy (STEM) , Optimum Bright Field , differential phase contrast , semiconductor , magnetic materials , intermetallics , interface , grain boundary , quasicrystals

Research theme for competitive and other funds (10)：

2021 - 2025 Development of Ultra-Low Electron Dose STEM and Real-Space Real-Space Structural Analysis of Atomic and Molecular Arrangements
2020 - 2025 Development of atomic-resolution magnetic field imaging electron microscopy and its application to interface characterization in magnetic materials
2019 - 2024 Nanoscale Interface Characterization
2021 - 2023 Development and application of ultra-high sensitive atomic-resolution imaging using a high-speed segmented STEM detector
2020 - 2023 Development of low-dose atomic resolution STEM imaging method

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Papers (36)：

Kousuke Ooe, Takehito Seki, Mitsuru Nogami, Yuichi Ikuhara, Naoya Shibata. Dose-efficient phase-contrast imaging of thick weak phase objects via OBF STEM using a pixelated detector. Microscopy. 2024
Satoko Toyama, Takehito Seki, Bin Feng, Yuichi Ikuhara, Naoya Shibata. Direct observation of space-charge-induced electric fields at oxide grain boundaries. Nature Communications. 2024. 15. 1. 8704
Masaya Takamoto, Takehito Seki, Yuichi Ikuhara, Naoya Shibata. Diffraction contrast of ferroelectric domains in DPC STEM images. Microscopy. 2024. 73. 5. 422-429
Koudai Tabata, Takehito Seki, Scott D. Findlay, Ryo Ishikawa, Ryuji Tamura, Yuichi Ikuhara, Naoya Shibata. Direct Imaging of Atomic Rattling Motion in a Clathrate Compound. Small Science. 2024. 4. 4. 2300254
Yuji Kohno, Takehito Seki, Shun Tsuruoka, Shinobu Ohya, Naoya Shibata. Magnetic field observation in a magnetic tunnel junction by scanning transmission electron microscopy. Microscopy. 2023. 73. 4. 329-334

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MISC (32)：

関岳人, 河野祐二, 幾原雄一, 柴田直哉. 原子分解能磁場フリー電子顕微鏡による超高分解能磁場観察. 表面と真空. 2023. 66. 12. 683-688
関岳人, 河野祐二, 幾原雄一, 柴田直哉. 走査透過電子顕微鏡による原子レベルの磁場観察. 固体物理. 2023. 58. 7. 377-383
Kousuke Ooe, Takehito Seki, Yuji Kohno, Akiho Nakamura, Yuichi Ikuhara, Naoya Shibata. Low-dose atomic-resolution observation of beam-sensitive materials via OBF STEM imaging technique. JEOL News. 2023. 58. 1. 21-28
大江耕介, 関岳人, 河野祐二, 中村明穂, 幾原雄一, 柴田直哉. OBF STEMによる電子線敏感材料の低ドーズ原子分解能観察. 日本電子News. 2023. 55. 1. 2-7
Takehito Seki, Yuji Kohno, Yuichi Ikuhara, Naoya Shibata. Atomic-scale Magnetic Field Imaging by Scanning Transmission Electron Microscopy. Solid State Physics. 2023. 58. 21-27

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Patents (2)：

OBSERVATION METHOD BY MEANS OF SCANNING TRANSMISSION ELECTRON MICROSCOPE, SCANNING TRANSMISSION ELECTRON MICROSCOPE SYSTEM, AND PROGRAM
走査型透過電子顕微鏡による測定方法、走査型透過電子顕微鏡システム及びプログラム

Lectures and oral presentations (21)：

Developing STEM Techniques with Segmented Detectors and Exploring Pixelated Detector Applications
(The 2nd China 4D-STEM Forum 2024)
Advancing Scanning Transmission Electron Microscopy Through Instrumentation and Technique Development
(Hong Kong Advanced Transmission Electron Microscopy 2024 2024)
STEM位相イメージング法の最近の展開
(日本顕微鏡学会シンポジウム 2024)
電子顕微鏡による材料観察技術の最先端
(先端電子顕微鏡分析技術講演会 2024)
DPC STEMの結像理論と局所電磁場解析への応用
(日本顕微鏡学会シンポジウム 2023)

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Education (1)：

2011 - 2014 The University of Tokyo The Graduate School of Engineering Department of Materials Science and Engineering PhD Course

Professional career (1)：

博士(工学) (東京大学)

Work history (6)：

2024/03 - 現在 The University of Tokyo The Graduate School of Engineering Institute of Engineering Innovation Senior Assistant Professor
2021/10 - 現在 Japan Science and Technology Agency PRESTO Researcher (Concurrent Position)
2019/04 - 2024/02 The University of Tokyo The Graduate School of Engineering Institute of Engineering Innovation Assistant Professor
2015/04 - 2019/03 The University of Tokyo The Graduate School of Engineering Institute of Engineering Innovation Research Fellow
2014/04 - 2015/03 The University of Tokyo Department of Materials Science and Engineering, School of Engineering JSPS Research Fellow (PD)

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Awards (9)：

2024/05 - 日本顕微鏡学会和文誌賞 OBF STEM法を利用した低ドーズ原子分解能観察
2024/03 - 東京大学大学院工学系研究科萌芽賞
2023/03 - Quasicrystals meeting AnPang Tsai Award
2022/05 - The Japanese Society of Microscopy Encouragement Award Theoretical Study of Phase Imaging and Development of New Imaging Technique in Scanning Transmission Electron Microscopy
2021/03 - Kazato Research Foundation Kazato Research Encouragement Prize Development and application of ultra-high sensitive atomic-resolution imaging using a high-speed segmented STEM detector

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