报 告 人：李自由 教授（Nanoscale Physics Research Laboratory, School of Physics and Astronomy, University of Birmingham）

报告时间：2015年12月10日(星期四)，下午15:30

报告地点：bat365在线平台官方网站六层学术报告厅（致知楼3623-3624）

报告摘要：

Clusters and nanoparticles occupy special places in fundamental research and practical applications. To understand the properties of functional nano-structures, it is essential to gain full knowledge of their three-dimensional atomic structures. However, this is still a challenging task for clusters and nanoparticles. In this talk, the current status of cluster structure research will be briefly reviewed, together with what an aberration-corrected scanning transmission electron microscopy (STEM) can offer in this area. The STEM capabilities will be illustrated by examples from our recent research in nano-catalysis and nano-optics: (1) counting gold atom by atom; and (2) seeing below surfaces. In both cases, direct evidence of atomistic details at surface, subsurface and interfaces will be presented and the size-dependent effects and their mechanistic origins will be discussed with computer modeling results. The possibility of linking the atomic structures of nanoclusters with their enhanced catalytic properties or novel optical properties will be discussed.

报告人简介：

Dr. Ziyou Li obtained her BSc in physics from Fudan University in 1982 and PhD in physics in 1989 at Cavendish Laboratory, University of Cambridge in U.K. She is now a Reader in Nanoscale Science in the School of Physics and Astronomy, University of Birmingham. Dr. Li is a committee member of IoP Electron Microscopy Analysis Group since 2009. She is also a committee member of British Vacuum Council, as IUVSTA Surface Science Divisional Representative for Great Britain, since 2010.

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2015年12月7日