Influence of size effect and boundary conditions on temperature overshooting in nanoscale thermal conduction

作     者：Xuefang Li Mingtian Xu David M.Christopher 

作者机构：Key Laboratory for Thermal Science and Power Engineering of Ministry of Education Tsinghua University Institute of Thermal Science and Technology Shandong University 

出 版 物：《Chinese Science Bulletin》 (中国科学通报)

年 卷 期：2014年第59卷第12期

页      面：1334-1339页

核心收录：

学科分类：08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Basic Research Program of China(2011CB706904) 

主　　题：边界温度 过冲现象 边界条件 纳米级 热传导 尺寸效应 纳米薄膜 热传递过程 

摘      要：The temperature overshooting phenomenon in one-dimensional nanoscale heat conduction in thin films is studied for various boundary *** results show that when ballistic heat transport strongly affects the heat transport process,temperature overshooting is more likely to occur.A sudden increase of temperature on only one surface of a thin film cannot trigger temperature overshooting,while symmetric boundary temperature perturbations lead to the largest temperature *** heat conduction is also studied in a nanoscale *** analytic results show that Fourier’s law may severely underestimate the temperatures in nanofilms as well as in nanoareas when temperature overshooting occurs.