报告题目：Insights from single particle spectroscopy of plasmonic nanostructures

报告人：Stephan Link教授，University of Illinois Urbana-Champaign, USA

报告时间：2025年11月27日（周四）09：00

报告地点：W210会议室

报告人简介：Stephan Link，现任美国伊利诺伊大学厄巴纳-香槟分校讲席教授，2001年博士毕业于美国佐治亚理工学院，之后在美国得克萨斯大学奥斯汀分校从事博士后工作，2006-2024在美国莱斯大学开启独立学术生涯，2024年起加入美国伊利诺伊大学厄巴纳-香槟分校，主要从事单颗粒谱学、等离激元光学、纳米结构的光物理与光化学、光谱电化学等领域研究，现担任The Journal of Physical Chemistry C期刊的Senior Editor，已发表论文200余篇，引用3万多次。

报告简介：A surface plasmon in a metal nanoparticle is the coherent oscillation of the conduction band electrons leading to both absorption and scattering as well as strong local electromagnetic fields. These fundamental properties have been exploited in many different ways, including surface enhanced spectroscopy and sensing, photothermal cancer therapy, and color display generation. The performance of plasmonic nanoparticles for a desired application not only depends on the particle size and shape, but is tunable through nanoparticle interactions on different length scales that support near- and far-field coupling. Chemical synthesis and assembly of nanostructures are able to tailor plasmonic properties that are, however, typically broadened by ensemble averaging. Single particle spectroscopy together with correlated imaging is capable of removing heterogeneity in size, shape, and assembly geometry and also allows one to separate absorption and scattering contributions. In this talk I will discuss our recent work on understanding the radiative and non-radiative properties of individual and coupled plasmonic nanostructures.