Dr. Shoichi Yamaguchi, Senior Research Scientist

Dr. Shoichi Yamaguchi

Spectroscopic Analyses of Liquid Surfaces

RIKEN

*The organization and the title are those when awarded

Abstract

  • 日本語
  • English

液体の表面を分光分析するための新しい方法,ヘテロダイン検出(HD-)和周波発生(SFG)分光法を開発した。このHDSFGは,従来のSFGとは比較にならないほど質の高いデータを提供することができる。まず,表面の分子種の濃度に比例するデータを直接与えることによって,これまでは不可能だった定量的な分光分析を液体表面に対して初めて可能にした。また,表面の分子の“上下”の配向を,データの値の正負の符号で非常に明快に示すことができる。今後,HD-SFGは液体表面の分光分析の標準的方法になると期待される。

Heterodyne-Detected Sum Frequency Generation(HD-SFG)spectroscopy has been newly developed for spectroscopic analyses of liquid surfaces. HD-SFG can provide very high quality data that cannot be given by existing SFG. HD-SFG allows one for the first time to perform quantitative analyses of liquid surfaces by directly providing spectroscopic data proportional to the density of surface molecules. HD-SFG can also indicate "up" versus "down" alignment of surface molecules very clearly by the sign of data. It is expected that HD-SFG will become a standard method for spectroscopic analyses of liquid surfaces.

Research summary

Four referees nominated him within TOP3 as the most distinguished research of all.  

His application field covers both material aspect and biological aspect, which are the subject of this years’ awards.

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