报告题目：Optical and Electron Spectroscopy of Metal Nanoparticles

报 告 人：Emilie Ringe , Rice University, Houston, USA

报告时间：2015年7月20日下午4：00

报告地点：理科楼三楼报告厅C302

报告摘要：Interest in nanotechnology is driven by unprecedented means to tailor physical behavior via structure and composition. Most properties, including optical, catalytic, and electronic, can be fine tuned through choice of composition, size, and shape of nanoparticles. Characterization and modeling of such structure-function relationships are crucial to the development of novel applications such as biological sensors and plasmonic devices. This talk covers recent experimental advances in optical and electron microscopy aimed at the correlation of local and far-field mapping of the plasmon resonance in noble metal nanoparticles (Ag, Au, and alloys). In particular, high throughput single particle optical scattering approaches will be discussed, in addition to monochromated electron-energy loss spectroscopy and electron tomography. Results from such approaches will be discussed, including new quantitative understanding on the effects of size, composition, and shape on the resonance frequency, field enhancement and distribution, and plasmon decay.