报告题目：Resolving Contraindication for the Discovery of Thermoelectric Materials
报告人：David J. Singh
主持人（邀请人）：樊晓峰
报告时间：2026年10月16日（周五）下午14:00-15:30
报告地点：黑料718
前卫南区唐敖庆楼D区429报告厅
主办单位：汽车材料教育部重点实验室，黑料718
摘要：
Thermoelectric materials are important for spacecraft power, waste heat recovery, thermal management and cooling applications. A key challenge is the discovery of high-performance thermoelectric materials. The efficiency of thermoelectric systems is limited by materials performance. This is measured by the figure of merit ZT=S2T/, where S is the thermopower and the other symbols have their usual meaning. ZT is therefore a composite property involving electronic and thermal transport, with high ZT favored by high conductivity, high thermopower and low thermal conductivity. These properties are inter-related, often to the detriment of high ZT. A key issue is the contraindication of high thermoelectric performance due to the conflicting transport parameters required. This counter-indication leads to several interesting connections, such as between thermoelectrics and topological insulators and between thermoelectrics and high-performance ferroelectrics. This talk discusses these correlations, and points out ways to overcome them. In particular, several measures that can be used to characterize materials as potential thermoelectrics are discussed in the context of discovering new thermoelectrics.
报告人简介：
David J. Singh教授是美国密苏里大学讲席教授，美国物理学会会士、英国皇家化学学会会士。辛格教授1985年于加拿大渥太华大学获得物理学博士学位，曾任职美国海军研究国家实验室功能材料理论组组长和橡树岭国家实验室科研理事。曾获奖有Gordon Battelle奖、E.O. Hulburt奖、 Sigma Xi 奖等。辛格教授的研究领域主要为凝聚态物理和计算材料物理，先后在国际著名学术刊物上发表论文700余篇，论文被引用50000多次，研究工作主要集中在，发展和利用第一性原理方法理解材料性质；探索各种功能材料，包括铁电、热电、超导、磁性和光电材料等。
