Negative Thermal Transport in Conduction and Advection

作     者：Liujun Xu Jiping Huang 须留钧;黄吉平

作者机构：Department of PhysicsState Key Laboratory of Surface Physicsand Key Laboratory of Micro and Nano Photonic Structures(MOE)Fudan UniversityShanghai 200438China 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2020年第37卷第8期

页      面：19-24页

核心收录：

学科分类：07[理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：Supported by the National Natural Science Foundation of China(Grant No.11725521) 

主　　题：structure. imaginary refractive 

摘      要：Negative refractive index has drawn a great deal of attention due to its unique properties and practical applications in wave *** promote the related physics in thermotics,here we manage to coin a complex thermal conductivity whose imaginary part corresponds to the real part of complex refractive ***,the thermal counterpart of negative refractive index is just negative imaginary thermal conductivity,which is featured by the opposite directions of energy flow and wave vector in thermal conduction and advection,thus called negative thermal transport *** avoid violating causality,we design an open system with energy exchange and explore three different cases to reveal negative thermal *** further provide experimental suggestions with a solid ring *** finite-element simulations agree with theoretical analyses,indicating that negative thermal transport is physically *** results have potential applications such as designing the inverse Doppler effect in thermal conduction and advection.