东南大学学报（自然科学版）2016，Vol.46Issue(6)：1155-1160,6.DOI:10.3969/j.issn.1001-0505.2016.06.008
声子聚焦效应对薄膜间接触热阻尺寸效应的影响
Effect of phonon focusing on thickness-dependent contact thermal conductance between thin films
摘要
Abstract
Thickness-dependent contact thermal conductance(CTC)between multilayer graphene as well as silicon thin films was investigated using the nonequilibrium molecular dynamics simulation method.The simulation results show that the CTC between multilayer graphenes is thickness depend-ent,and increases as the thickness gets larger.However,the CTC between silicon thin films is al-most thickness independent.In addition,according to the phonon irradiation theory and the aniso-tropic Debye model,size effect strengthαwas defined and was calculated to show its variation trend as the film thickness increases.The results show that the phonon focusing dose plays an important role in the thickness dependence of CTC.This conclusion is helpful in establishing the model of CTC between thin films and in controlling the engineering thermal transport properties of nanocomposites.关键词
分子动力学/声子聚焦/声子辐射/接触热导/尺寸效应Key words
molecular dynamics/phonon focusing/phonon irradiation/contact thermal conduct-ance/size effect分类
数理科学引用本文复制引用
陈伟宇,刘晨晗,陶毅,蔡爽,魏志勇,毕可东,杨决宽,陈云飞..声子聚焦效应对薄膜间接触热阻尺寸效应的影响[J].东南大学学报（自然科学版）,2016,46(6):1155-1160,6.基金项目
国家自然科学基金重点资助项目（51435003）、江苏省普通高校学术学位研究生创新计划资助项目（KYLX15＿0058）、东南大学优秀博士学位论文培育基金资助项目（YBJJ1541）． （）
