Dynamics and Energetics of Atomic Processes on Solid Surfaces

这是一个实验性的研究项目，旨在回答以下科学问题：吸附的杂质原子如何调制表面的电子电荷密度，电荷密度的调制如何影响表面和界面附近化学物质的平衡分布，什么是位点比结合能，以及这些调制如何影响表面的结构。实验技术采用了场离子显微镜和飞行时间原子探针。研究的重点是表面原子过程的动力学和能量学，以及它们与金属、合金、半导体及其组合的近表面和界面层中的原子结构和化学物质的平衡分布的关系。

This is an experimental research program designed to answer the following scientific issues: how the electronic charge density at the surface is modulated by adsorbed impurity atoms, how modulation of charge density affects the equilibrium distribution of chemical species near surfaces and interfaces, what are site specific binding energies, and how these modulations affect structure at surfaces. The experimental techniques being used field ion microscopy and time-of-flight atom probe. The main emphasis of the research is the dynamics and energetics of surface atomic processes and how they are correlated to the atomic structures as well as the equilibrium distribution of chemical species in the near surface and interface layers of metals, alloys, semiconductors, and their combinations.