纳米标准与检测重点实验室第245期学术报告

报告题目：Concepts of Heat Transport in Low-Dimensional Materials

报  告 人：徐志平 教授，清华大学

时      间：2020年9月11日（星期五）上午10:00

地      点：国家纳米科学中心科研楼三层阶梯教室

邀 请 人：裘晓辉 研究员

Abstract：

Heat transport is a key energy transfer process in materials and devices. At nanoscale, the reduced size, low-dimensional nature of samples and the rich spectrum of material imperfection result in unconventional behaviors, which is crucial for the understandings of materials with nanostructures, or the development of nanoscale devices.

In this talk, I will summarize our recent theoretical exploration of heat transport processes in low-dimensional materials and structures. Two topics will be presented – (1) structural disorder induces phonon localization and leads to the mode transition between wave propagation to thermal hopping in two-dimensional materials, and (2) interface engineering offers a new way to manage heat transport and dissipation through nanoscale interfaces. The physics uncovered from computational simulations, experimental studies (in collaboration), and analytical models will be reviewed, followed by a perspective on the challenges in the field.

报告人简介：

徐志平博士2002年和2007年于清华大学获得学士和博士学位，2007-2008年与2008-2010年间分别在美国Rice大学和MIT从事博士后研究工作，2010年起在清华大学航天航空学院工作，现任工程力学系教授，主要研究兴趣为微纳米尺度下的物理、化学过程及其对材料与器件性能的调控机制。