Material Properties of Nanospheres and Nanorods Studied by Time-Resolved Spectroscopy

通过时间分辨光谱研究纳米球和纳米棒的材料特性

• 批准号: 0236279
• 负责人: Gregory Hartland
• 金额: $ 31.24万
• 依托单位: University of Notre Dame
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-02-01 至 2006-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0236279&HistoricalAwards=false
• 关键词: Material; Properties; Nanospheres; Nanorods; Studied

In this project, funded by the Experimental Physical Chemistry Program of the Chemistry Division, Hartland will study the material properties of nanospheres and nanorods by means of ultrafast time-resolved spectroscopy. Specifically, the technique relies on beats due to coherently excited vibrational modes that result from short pulse laser illumination. Electronic properties are probed by examining electron-electron and electron-phonon coupling. Six individual projects will be undertaken, ranging from measurements of the symmetric breathing modes of metal nanoparticles at high temperatures, through ultrafast studies of electron-electron interactions in bimetallic particles, to measurements of the time-resolved anisotropy of single Au nanorods. The proposed research includes the development of new methods that will result in applications to the technology of nanoparticles. Teaching and training of students will be done at all levels, inclusive of research participation. The students will thereby receive training in one of the forefront areas of materials science and chemistry in preparation for advanced studies or employment in industry, academia, or government laboratories.

在这个由化学部实验物理化学计划资助的项目中，哈特兰将通过超快时间分辨光谱学研究纳米球和纳米棒的材料特性。 具体地，该技术依赖于由于短脉冲激光照射产生的相干激发的振动模式的拍频。 通过检查电子-电子和电子-声子耦合来探测电子性质。 将进行六个单独的项目，从高温下金属纳米粒子的对称呼吸模式的测量，通过超快研究电子-电子相互作用的纳米粒子，测量单个Au纳米棒的时间分辨各向异性。 拟议的研究包括开发新方法，将导致纳米粒子技术的应用。 学生的教学和培训将在各级进行，包括参与研究。 因此，学生将在材料科学和化学的前沿领域之一接受培训，为工业，学术界或政府实验室的高级研究或就业做准备。