报告题目：Nanostructured Thermoelectrics: Role of Hierarchical Length-Scale Architecture

报告人：何佳清（南方科大物理系主任）

报告时间：6月2日（周四）上午10:00

报告地点：物理院新楼五楼多功能厅

报告摘要：The core intellectual challenge in the next generation bulk thermoelectric materials revolves around synthesis and fabrication of hierarchically organized microstructure that does not appreciably compromise the innate high power factor of the chosen thermoelectric matrix systems but significantly reduces lattice thermal conductivity to enhance the overall figure of merit, ZT.

An effective emerging strategy involves introducing nanostructures in the bulk thermoelectric materials, wherein there are exciting prospects for understanding and tailoring microstructural elements with due attention to the hierarchical length-scale influence across atomic-, nano- and micro-meter dimensions. We will present this intricate but tractable relationship between various microstructural attributes (point, line and interfacial defects as well as associated elastic and plastic strain) and lattice thermal conductivity in important nanostructured thermoelectric systems. We will emphasize the need for overarching approach for understanding hierarchical length-scale influences enable specific design strategies for the next generation thermoelectric materials.

报告人简介：Jiaqing He is a full professor at South University of Science and Technology of China. He received his joint Ph.D. degree in physics from both Juelich Research Center and Wuhan University in 2004. He was a postdoctor at Brookhaven National Laboratory (2004-2008), research assistant professor (2008-2012) at Northwestern University, and a professor at Xi’an Jiaotong University (2012-2013). His research interests include transmission electron microscopy，thermoelectric materials, and structure and property relationship.

邀请人：王建波教授