Influence of Surface Effects on the Elastic Properties of Silicon Nanowires with Different Cross Sections

作     者：GU Fang ZHANG Jia-Hong XU Lin-Hua LIU Qing-Quan LI Min 顾芳;张加宏;徐林华;刘清惓;李敏

作者机构：College of Mathematics and PhysicsNanjing University of Information Science and TechnologyNanjing 210044 College of Electronic and Information EngineeringNanjing University of Information Science and TechnologyNanjing 210044 

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

年 卷 期：2011年第28卷第10期

页      面：165-168页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos.41075026 and 61001044 the Open Research Fund of Key Laboratory of MEMS of Ministry of Education,Southeast University under Grant Nos.2009-03 and 2010-02 the Special Fund for Meteorology Research in the Public Interest under Grant No.GYHY200906037 

主　　题：nanowires bending size 

摘      要：Based on the anharmonic Keating model and the modified bending theory,an analytical semi-continuum atomistic lattice model is proposed for the size-dependent bending mechanical analysis of silicon nanowires(SiNWs)with different cross-sectional *** semi-continuum model proves that the elastic behavior of SiNWs is size-dependent and predicts softer or stiffer SiNWs which depend on the relaxation coefficient and the surface *** also shows that the size effects of the mechanical responses of SiNWs depend on not only surface effects but also the cross-sectional shapes of SiNWs.