Giant resonances and giant dipoles: Cluster-beam spectroscopy of metal nanoparticle ions and amino acid zwitterions

巨共振和巨偶极子：金属纳米粒子离子和氨基酸两性离子的簇束光谱

• 批准号: 0354834
• 负责人: Vitaly Kresin
• 金额: --
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-07-01 至 2008-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0354834&HistoricalAwards=false
• 关键词: Giant; resonances; giant; dipoles; Cluster

This project focuses on the study of the electronic and structural properties of size-resolved clusters, which possess large static or dynamic electric dipole moments. The experiments will be carried out on free clusters in beams. The following topics will be explored: (i) the electronic surface structure of sliver and gold nanoclusters, specifically, the screening parameters of s- and d-electrons in the surface region; (ii) the influence of adsorbed molecules on the optical spectra of such clusters; (iii) the formation of dipolar amino acid zwitterions in water clusters. The broader impacts involve education of both undergraduate and graduate students, encouragement of diversity and outreach to local high school students.

该项目重点研究尺寸分辨簇的电子和结构特性，这些簇具有大的静态或动态电偶极矩。实验将在梁中的自由团簇上进行。将探讨以下主题：（i）银和金纳米团簇的电子表面结构，特别是表面区域s电子和d电子的筛选参数； (ii) 吸附分子对此类团簇光谱的影响； (iii)在水簇中形成偶极氨基酸两性离子。更广泛的影响涉及本科生和研究生的教育、鼓励多样性以及向当地高中生进行推广。