Surface effects on buckling of nanowires under uniaxial compression

被引：307

作者：

Wang, Gang-Feng ^{[1
]}

Feng, Xi-Qiao ^{[2
]}

机构：

[1] Xi An Jiao Tong Univ, Dept Engn Mech, SV Lab, Xian 710049, Peoples R China

[2] Tsinghua Univ, Dept Engn Mech, Appl Mech Lab, Beijing 100084, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 14期

基金：

中国国家自然科学基金;

关键词：

buckling; compressibility; elasticity; nanowires; surface energy; surface tension;

D O I：

10.1063/1.3117505

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Based on the conventional Euler buckling model, uniaxial compression tests have been utilized recently to measure the mechanical properties of nanowires. However, owing to the increasing ratio of surface area to bulk at nanoscale, the influence of surface energy becomes prominent and should be taken into consideration. In this letter, an analytical relation is given for the critical force of axial buckling of a nanowire by accounting for both the effects of surface elasticity and residual surface tension. This study might be helpful to characterize the mechanical properties of nanowires or design nanobeam-based devices in a wide range of applications.

引用

页数：3

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