Study on surface reactions by spatial and temporal mapping

本研究的目的是利用新发展的和频产生显微镜、扫描隧道显微镜、理论模拟、时间分辨二次谐波和和频产生光谱等多种手段，阐明固体表面和界面上各种过程和现象的机理。本研究主要集中在氧化银表面的反应、金纳米团簇的光还原、有机半导体和介电体界面的载流子分布、碱金属吸附系统的相干表面声子激发以及金属表面纳米厚层的振动能量输运等方面。

The purpose of this study is to elucidate the mechanisms of various processes and phenomena at solid surfaces and interfaces by using various means including newly developed sum-frequency generation microscopy, scanning tunneling microscopy, theoretical simulations, and time-resolved second harmonic and sum-frequency generation spectroscopy. This study mainly focused on reactions at oxidized silver surfaces, photo-reduction at gold nanoclusters, carrier distributions at the interface between organic semiconductor and dielectrics, coherent surface phonon excitation at alkali metal adsorption systems, and vibrational energy transport in nanometer-thick layers on metal surfaces.