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  www.dicp.cas.cn    发布时间:2017-11-27    供稿部门:DNL2002
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报告题目:Spatio-temporally Resolved in Situ Transmission Electron Microscopy of the Dynamics of Nanostructured Materials

报告时间:11月30日(星期四)上午9:30-11:00

报告地点:能源基础楼一楼会议室

报告人:Thomas Willum Hansen 博士 丹麦技术大学

  报告摘要:

  Recent advances in MEMS based instrumentation for transmission electron microscopy has paved the way for in situ investigation of materials with unprecedented spatial resolution under high pressures and elevated temperatures. Combined with traditional differentially pumped environmental TEMs, researchers can investigate phenomena such as the melting of nanoparticles, growth of individual graphene layers, nanowire and nanotube growth and surface structure of catalytic materials exposed to pressures in the range spanning from 10-8 Pa to atmospheric pressure all at a resolution in the Ångstrøm regime. Here, we have modelled the melting point of platinum nanoparticles using molecular dynamics as a function of nanoparticle diameter using molecular dynamics simulations performed in the Atomic Simulation Environment (ASE) in combination with the ASAP package.

  报告人简介:

  Thomas Willium Hansen 2006年博士毕业于丹麦技术大学,随后在Frtiz Haber研究所、丹麦技术大学从事博士后研究,现任丹麦技术大学纳米电子显微中心高级研究员。主要研究领域涉及纳米材料、多相催化、电催化、光催化等,重点关注材料的形貌、动态过程以及表界面现象。主要研究手段为高分辨透射电子显微术、扫描电子显微术、电子能量损失谱、能量色散X射线光谱等,并综合利用这些技术在加热、气氛条件下进行原位表征。目前,已发表研究论文75篇,总引用次数1600余次,H-index为21。

  联系人:DNL2002 赵旭

  联系电话:84379707

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