Koudai Tabata




Yayoi 2-11-16, Bunkyo-ku, Tokyo, Japan, 113-8656
Phone +81-3-5841-7689
Fax +81-3-5841-7694
mail: tabata   sigma.t.u-tokyo.ac.jp(please insert @ instead of space)



Profile



  • Mar. 2021 B.E. The University of Tokyo (Department of Materials Science, School of Engineering)
  • Apr. 2021~ M.S. The University of Tokyo (Department of Materials Science, School of Engineering)
  • Research



    Development of direct observation of local atomic vibrations by using segmented detector STEM





    I am developing a method to directly observe atomic vibrations at the atomic scale by scanning transmission electron microscopy (STEM). In recent years, it has become important to understand heat transport in nanoscale materials such as thermoelectric materials and electronic devices. Phonons are scattered by crystal defect structures such as atomic vacancies, substituted atoms, and grain boundaries. Direct measurement of atomic vibrations in the local region is required to elucidate the correlation between the local atomic structure and heat transport. However, a method for quantitative observation of thermal vibrations in such local regions has not yet been established. In this research, the aim is to realize direct observation of atomic vibrations in the local region by combining a STEM with a segmented detector.





    Publication list



    Conference

    1. 田畑浩大,関岳人,幾原雄一,柴田直哉,「分割型STEM検出器を用いた局所原子振動直接観察法の開発」,日本顕微鏡学会 第64回シンポジウム,福岡市,2021年11月.(poster)

    2. 田畑浩大,関岳人,幾原雄一,柴田直哉,「分割型検出器を用いたSTEMによる局所原子振動観察法の開発」,日本顕微鏡学会 第78回学術講演会,郡山市,2022年5月.(oral)

    Awards

  • 第21回結晶界面研究会 優秀発表賞, 2021年9月
  • 日本顕微鏡学会第64回シンポジウム 優秀ポスター賞(装置手法系), 2021年11月