Dynamical studies of photoinduced structural phase transitions

在本研究项目中，我们的目的是阐明在选定的重要的典型材料的光致结构相变的超快动力学，使用最先进的实验方法和理论方法。新的材料相被发现，电子激发态的弛豫已经直接在飞秒时间域解决。研制了一种性能优异的新型时间分辨电子衍射仪，从原子水平上揭示了金属和半导体的超快结构动力学。

In this research project, we aimed to elucidate ultrafast dynamics of photoinduced structural phase transitions in selected important typical materials, using the state-of-art experimental methods and theoretical methodology. New material phases have been discovered, and relaxation of electronically excited state has been resolved directly at femtosecond temporal domains. The develope a new time-resolved electron diffractometer, which shows outstanding performance, and ultrafast structural dynamics of metals and semiconductors have been revealed from atomic levels.