兰州大学110周年校庆“聚英萃华”萃英学院学术讲座(第九场)——Nan Jiang教授

日期: 2018-11-07 阅读: 来源: 关键词:

应萃英学院、化学化工学院邀请,芝加哥伊利诺伊大学Nan Jiang教授来我校进行学术交流,欢迎全校师生积极参加!

报告人:Nan Jiang教授

题 目:"Nanoscale Chemical Imaging viaScanning Tunneling Microscopy and Advanced Raman Spectroscopy Techniques"

时间:2018年11月9日(星期五)晚上7:30

地点:观云楼813报告厅

报告摘要:

Tip-Enhanced Raman Spectroscopy (TERS) performed under ultrahigh vacuum (UHV) conditions affords the spatial resolution of traditional Scanning Tunneling Microscopy (STM) while collecting the chemical information provided by Raman spectroscopy. By using a plasmonically-active material for our scanning probe, the Raman signal at the tip-sample junction is incredibly enhanced, allowing for single-molecule probing. This system, further aided by the benefits of Ultra-High Vacuum, is uniquely capable of obtaining surface data that would otherwise be unobtainable with less-specialized methods. By investigating substrate structures, superstructures, and the adsorption orientations obtained from vibrational modes, we extract novel surface-chemistry data at an unprecedented spatial (<1nm) and energy (<10 wavenumber) resolution.

专家简介:

Department of Chemistry,University of Illinois at Chicago, USA.Our group focuses on applying scanning probe-based nanotechnology, including scanning probe microscopy (SPM) and tip enhanced Raman spectroscopy (TERS), to design, synthesize and characterize new nanomaterials and molecular assemblies. We are interested in fundamental science and applications at the nano-scale, including charge transfer, electron localization and generation, photoabsorption and photoemission, which are at the heart of the next generation single-molecule devices.

萃英学院 化学化工学院
2018年11月7日

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编辑:孙寒璞
 

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