Influence of Surface Effects on the Elastic Properties of Silicon Nanowires with Different Cross Sections
GU Fang1, ZHANG Jia-Hong2**, XU Lin-Hua1, LIU Qing-Quan2, LI Min2
1College of Mathematics and Physics, Nanjing University of Information Science and Technology, Nanjing 210044 2College of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044
Influence of Surface Effects on the Elastic Properties of Silicon Nanowires with Different Cross Sections
GU Fang1, ZHANG Jia-Hong2**, XU Lin-Hua1, LIU Qing-Quan2, LI Min2
1College of Mathematics and Physics, Nanjing University of Information Science and Technology, Nanjing 210044 2College of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044
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 shapes. The 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 tension. It 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.
Abstract：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 shapes. The 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 tension. It 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.
GU Fang;ZHANG Jia-Hong**;XU Lin-Hua;LIU Qing-Quan;LI Min
. Influence of Surface Effects on the Elastic Properties of Silicon Nanowires with Different Cross Sections[J]. 中国物理快报, 2011, 28(10): 106102-106102.
GU Fang, ZHANG Jia-Hong**, XU Lin-Hua, LIU Qing-Quan, LI Min
. Influence of Surface Effects on the Elastic Properties of Silicon Nanowires with Different Cross Sections. Chin. Phys. Lett., 2011, 28(10): 106102-106102.
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2011, Vol. 28 
