Surfaces and Thin Films of sp-bonded Metals

sp结合金属的表面和薄膜

• 批准号: 9510132
• 负责人: E. Ward Plummer
• 金额: $ 42.1万
• 依托单位: University of Tennessee Knoxville
• 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: 1995-08-01 至 1999-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9510132&HistoricalAwards=false
• 关键词: Surfaces; Thin; Films; sp; bonded

9510132 Plummer This research program is aimed at an investigation of the physical and chemical properties of surfaces, interfaces, and thin films of simple metals, with the objective of using these model systems to elucidate fundamental concepts. A wealth of fascinating physical phenomena awaits investigation, such as pinned charge density waves at the surface of potassium, pre-martensitic surface transitions on lithium, surface reconstructions such as the missing row reconstruction on a beryllium surface, oscillatory structural transformations in thin films, and collective excitations in "designed" multilayers. The impact of these studies will be the development of new concepts that govern the behavior of a surface and an interface. %%% The physical and chemical properties of materials are varied and extremely complex, governed by the details of the interactions of billions and billions of electrons with billions of ions. On the other hand, it is this complexity that leads to applicability of materials in our daily lives, such as integrated circuits (computers), magnetic recording, catalytic activity, and light weight but strong materials, so that new material, with quite different or better physical or chemical properties can be prepared. This research program uses the simple metals (e.g., lithium, sodium, beryllium) as the vehicle for developing a fundamental understanding of the physical and chemical properties of surfaces and interfaces. It is the characteristics of the surface or interface that dictates the behavior in most of the applications above. ***

小行星9510132 该研究计划旨在调查简单金属的表面，界面和薄膜的物理和化学性质，目的是使用这些模型系统来阐明基本概念。 丰富的迷人的 物理现象有待研究，例如钾表面的钉扎电荷密度波、锂上的前马氏体表面转变、铍表面上的表面重建（例如缺失行重建）、薄膜中的振荡结构转变以及“设计”多层膜中的集体激发。 这些研究的影响将是新概念的发展，支配的表面和界面的行为。 材料的物理和化学性质是多种多样的，并且极其复杂，由数十亿电子与数十亿离子相互作用的细节所控制。 另一方面，正是这种复杂性导致了材料在我们日常生活中的适用性，例如集成电路（计算机），磁记录，催化活性和轻质但坚固的材料，以便可以制备具有完全不同或更好的物理或化学性质的新材料。 这项研究计划使用简单的金属（例如，锂，钠，铍）作为发展表面和界面的物理和化学性质的基本理解的工具。 正是表面或界面的特性决定了上述大多数应用中的行为。 ***