Nanostructure Formation and Evolution in Thin Films

在这个由分析和表面化学计划支持的研究项目中，爱荷华州州立大学的James Evans和Patricia Thiel教授及其同事正在研究薄膜生长的原子水平机制。 使用实验/计算相结合的方法，该团队正在研究金属在金属上的各向异性同质外延生长，集中在Ag（110）单晶表面上的银的生长。 研究了吸附质表面活性剂对薄膜生长机理和形貌的影响。 变温扫描隧道显微镜，高分辨率低能电子衍射，和动力学蒙特卡罗方法都被用来检查这些生长过程。 这项工作的结果有助于定义和控制各种技术应用的纳米结构的结构和稳定性。了解金属对金属生长的详细机制是在爱荷华州州立大学进行的这一研究项目的目标。 实验和计算方法相结合，用于检查各向异性生长，表面活性剂介导的生长，以及金属和石墨表面上的纳米结构的稳定性和形态。 从这些研究中获得的信息影响了电子器件制造和纳米结构材料的技术。

In this research project supported by the Analytical and Surface Chemistry Program, Professors James Evans and Patricia Thiel and their coworkers at Iowa State University are examining the atomic level mechanisms of thin film growth. Using a combined experimental/computational approach, this team is investigating the anisotropic homoepitaxial growth of metals on metals, concentrating on the growth of silver on the Ag(110) single crystal surface. The effect of adsorbate surfactants on the growth mechanism and morphology of the thin film is also examined. Variable temperature scanning tunneling microscopy, high-resolution low energy electron diffraction, and kinetic Monte Carlo methods are all used to examine these growth processes. The results of this work help to define and control the structure and stability of nanostructures for various technological applications.Understanding the detailed mechanism of metal on metal growth is the goal of this research project carried out at Iowa State University. A combination of experimental and computational methods is used to examine anisotropic growth, surfactant mediated growth, and the stability and morphology of nanostructures on metal and graphite surfaces. Information obtained from these studies impacts technologies for electronic device fabrication and nanostructured materials.