Surface Electromigration on Metals

该项目将应用一系列现代表面科学技术来研究施加电流对金属表面原子表面迁移的影响。这种现象被称为表面电迁移。有趣的是，人们对表面上的电磁知之甚少，尽管人们认为它具有潜在的重大技术价值。过去曾用现代表面结构工具对其进行过研究，但并不深入。利用低能电子显微镜研究在外加电流作用下台阶结构的变化，对表面质量输运进行实验研究。这个项目将研究表面原子在外加电场的影响下如何移动或不移动。在表面形态的变化之后，将使用一种新的表面显微镜，可以实时收集表面结构图像的数据。这是一台低能电子显微镜。令人惊讶的是，人们对表面电迁移现象知之甚少。它已经被研究了很多年，但没有采用这个项目的现代技术。目标是获得关于表面电迁移的明确数据，这被认为具有潜在的重大技术意义，特别是在微电子工业中。＊＊＊

9225080 Williams This project will apply a range of modern surface science techniques to investigate the effects of applied electrical currents on the surface migration of atoms on metal surfaces. The phenomenon is known as surface electromigration (EM). Interestingly, EM on surfaces is rather poorly understood, though it is considered to potentially be of substantial technological interest. In the past it has been studied, but not in depth, with modern surface structure tools. Surface mass transport will be investigated experimentally by studying the changes of step structure under an applied electrical current using low-energy electron microscopy. %%% This project will investigate how surface atoms move or do not move under the influence of an applied electric field. The changes in surface morphology will be followed with a new surface microscope that allows real-time data collection of surface structure images. This is a low-energy electron microscope. The phenomenon of surface electromigration is surprisingly poorly understood. It has been studied for many years, but not with the modern techniques of this project. The objective is to obtain definitive data about surface electromigration, which is acknowledged to be potentially of great technological significance, particularly in the microelectronics industry. ***