Dynamics of Atomically Thin Layers

原子薄层的动力学

• 批准号: 9423307
• 负责人: Ludwig Bruch
• 金额: $ 18万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-07-01 至 1999-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9423307&HistoricalAwards=false
• 关键词: Dynamics; Atomically; Thin; Layers

9423307 Bruch This research involves the structure and dynamics of atomically thin layers, emphasizing physically adsorbed gases and adsorbed alkalis on metal substrates. The objective is to achieve a quantitative understanding of observed structures and dynamics of nonuniform systems in terms of an atomic scale description. The phenomena under investigation include: spatially modulated lattices, structural relaxation in thin films, defect structures, specific heat of thin films, adsorbate-substrate potentials and potential barriers, lattice liquids, diffusion in thin films, and the dynamical excitations of superlattices. %% This research deals with the theoretical study of layers of atoms, often only a single layer or a partial layer, on atomically smooth surfaces. Professor Bruch is a world expert in developing the theory when the interactions between the layers and substrate are weak, as occurs for the inert gases. Here Professor Bruch seeks to clear up some cases where the experimental results are at odds with theory. He also plans to extend his studies to alkali metal atoms attached to metal surfaces. ***

9423307这项研究涉及原子薄层的结构和动力学，重点是物理吸附的气体和金属衬底上吸附的碱。其目的是通过原子尺度的描述实现对观察到的非均匀系统的结构和动力学的定量理解。所研究的现象包括：空间调制晶格、薄膜的结构弛豫、缺陷结构、薄膜的比热、吸附-衬底势垒、晶格液体、薄膜中的扩散以及超晶格的动态激发。这项研究涉及原子光滑表面上原子层的理论研究，通常只有一层或部分原子层。布鲁赫教授是这一理论的世界专家，他研究的理论是，当层与衬底之间的相互作用很弱时，就像惰性气体一样。在这里，布鲁克教授试图澄清一些实验结果与理论不符的案例。他还计划将他的研究扩展到附着在金属表面的碱金属原子。***