Optical Properties of Small Metal and Dielectric Structures

小型金属和电介质结构的光学特性

• 批准号: 9420441
• 负责人: Keith Bonin
• 金额: $ 22.85万
• 依托单位: Wake Forest University
• 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: 1995-01-01 至 1998-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9420441&HistoricalAwards=false
• 关键词: Optical; Properties; Small; Metal; Dielectric

In this project in the Physical Chemistry program of the Chemistry Division and the Atomic, Molecular and Optical Physics program of the Physics Division, Prof. Keith Bonin of the Physics Department of Wake Forest University will measure the scalar and tensor polarizabilities of neutral and ionic lithium clusters, neutral and ionic sodium clusters, and fullerene-type carbon structures. The measurements will be made at two frequencies, that of the Nd:YAG laser fundamental at 1059 nm, corresponding to an energy of 1.17 eV, and that of the Hydrogen, Stokes Raman shifted line at 1907 nm, corresponding to an energy of 0.65 eV. The experimental method will be based on the newly developed light force technique. The electrical polarizability is an important property of a molecular system. The so-called dynamical, i.e., frequency dependent, polarizabilities serve as benchmarks for electronic structure calculations of electric response properties. The measurements will be made on free, single cluster units in the gas phase and the results correlated to those for the condensed-phase. The data thus obtained will contribute to a better understanding of the transition from the gas to the condensed phase, and the electrical and electro-optical properties of materials.

在这个项目中的物理化学程序的化学 原子、分子和光学物理系 物理系教授基思博宁 森林大学将测量的标量和张量极化率的 中性和离子锂簇，中性和离子钠簇， 和富勒烯型碳结构。 测量将在 两个频率，Nd：YAG激光器基频在1059 nm， 对应于1.17 eV的能量，以及氢的能量，斯托克斯 在1907 nm处的拉曼位移线，对应于0.65 eV的能量。 实验方法将基于新开发的光力 法 电极化率是分子的一个重要性质 系统 所谓的动态，即，频率相关， 极化率作为电子结构的基准 电响应特性的计算。 测量结果将是 在气相中的自由单簇单元上进行，结果 与凝聚相相关。 由此获得的数据将 有助于更好地理解从气体到 凝聚相，以及电和电光性质， 材料.