Open Access Nano Express

Shock-induced breaking of the nanowire with the dependence of crystallographic orientation and strain rate

Fenying Wang, Yajun Gao, Tiemin Zhu and Jianwei Zhao*

Author Affiliations

Key Laboratory of Analytical Chemistry for Life Sciences, Ministry of Education, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210008, P. R. China

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Nanoscale Research Letters 2011, 6:291  doi:10.1186/1556-276X-6-291

Published: 5 April 2011

Abstract

The failure of the metallic nanowire has raised concerns due to its applied reliability in nanoelectromechanical system. In this article, the breaking failure is studied for the [100], [110], and [111] single-crystal copper nanowires at different strain rates. The statistical breaking position distributions of the nanowires have been investigated to give the effects of strain rate and crystallographic orientation on micro-atomic fluctuation in the symmetric stretching of the nanowires. When the strain rate is less than 0.26% ps-1, macro-breaking position distributions exhibit the anisotropy of micro-atomic fluctuation. However, when the strain rate is larger than 3.54% ps-1, the anisotropy is not obvious because of strong symmetric shocks.