Nonequilibrium Structure of Metal Films

该奖项是在材料化学和化学 支持合作研究的加工倡议 泰尔和埃文斯教授在爱荷华州州立大学的演讲。联合 资金由化学和材料部门提供 Research.研究的重点是调查 金属衬底上的金属膜的扩散限制结构 在低温状态下， 薄膜是缓慢的，薄膜结构受到 吸附事件的特征。 将开发复杂的薄膜生长模型，使用 独特的分子动力学模拟和Monte Carlo模拟和/或速率方程分析， 可以与实验值进行比较的统计量 数据要研究的典型系统是高表面自由 能量金属如铁或镍对低表面自由能 例如银或金的金属。在实验中，两个主要的 补充技术，低能电子衍射和 将采用扫描隧道显微镜。

This award is made in the Materials Chemistry and Chemical Processing Initiative in support of the collaborative research of Professors Thiel and Evans at Iowa State University. Joint funding is provided by the Divisions of Chemistry and Materials Research. The thrust of the research is an investigation of the diffusion-limited structure of metal films on metal substrates in the low-temperature regime, where thermal diffusion within the film is slow and film structure is strongly influenced by characteristics of the adsorption event. Sophisticated models for film growth will be developed, using a unique combination of molecular dynamics simulations and Monte Carlo simulations and/or rate equation analyses which yield statistical quantities which can be compared to experimental data. Typical systems to be studied are high-surface free energy metals such as iron or nickel on low-surface free energy metals such as silver or gold. Experimentally, two main complementary techniques, low-energy electron diffraction and scanning tunneling microscopy will be employed.