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

具体地说，这项技术依赖于短脉冲激光照射产生的相干激发振动模式产生的节拍。通过研究电子-电子和电子-声子耦合来探讨电子性质。将开展六个单独的项目，从测量金属纳米粒子在高温下的对称呼吸模式，到双金属粒子中电子-电子相互作用的超快研究，到测量单个Au纳米棒的时间分辨各向异性。拟议的研究包括新方法的开发，这些方法将导致纳米技术的应用。对学生的教学和培训将在各级进行，包括参与研究。因此，学生将接受材料科学和化学前沿领域之一的培训，为深造或在工业、学术界或政府实验室就业做准备。

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.