Stranski-Krastanov Growth in a Binary Eutectic

0075834 Marks在这个更新项目的努力，研究的结构方面，热力学和动力学的Stranski-Krastanov增长在二元共晶系统进行。感兴趣的主要领域之一是了解这样的系统如何表现为颗粒尺寸从大到小的减小，其中大的是适用于体相图的，小的是诸如表面自由能的项可能导致共晶温度的降低。与此同时，进行了确定表面结构的“直接方法”的工作。这里的目标是提供一个通用的代码，是免费提供解决，从头算，三维表面结构的透射电子衍射或表面X射线衍射数据。一个新的领域添加到该计划是电荷转移在重建的表面，原则上应该是可检测和可量化的使用透射电子衍射。另一个领域是旋进电子衍射照相机，它可能成为未来利用透射电子衍射确定结构的一个非常重要的工具。%随着电子器件尺寸的不断减小，金属材料没有理由遵循传统的体特性行为。 这项研究采用了经典的冶金学，表面科学和小颗粒科学，以更好地了解薄金属薄膜的性能和行为。

0075834MarksIn this renewal project effort, research into the structural aspects, thermodynamics and kinetics of Stranski-Krastanov growth in a binary eutectic system is performed. One of the primary areas of interest is to understand how such a system behaves as the particle size decreases from large, where the bulk phase diagram is applicable, to small where terms such as the surface free energy may lead to depression of the eutectic temperature. Parallel with this research, work on 'Direct Methods' for determining surface structures is performed. The target here is to provide a general code that is freely available to solve, ab-initio, three-dimensional surface structures from transmission electron diffraction or surface x-ray diffraction data. A new area added to the program is charge-transfer at reconstructed surfaces which should in principle be detectable and quantifiable using transmission electron diffraction. Another area is a precession electron diffraction camera, which could become a very important tool in the future for determining structures using transmission electron diffraction. %%%As dimensions continue to decrease in electronic devices, there is no reason why metallic materials should follow the traditional bulk property behavior. This research employs classic metallurgy, surface science, and small particle science to better understand the properties and behavior of thin metallic films.***