Investigation of mechanical properties of twin gold crystal nanowires under uniaxial load by molecular dynamics method

doi:10.1088/1674-1056/25/8/086203

Abstract Twin gold crystal nanowires, whose loading direction is parallel to the twin boundary orientation, are simulated. We calculate the nanowires under tensile or compressive loads, different length nanowires, and different twin boundary nanowires respectively. The Young modulus of nanowires under compressive load is about twice that under tensile load. The compressive properties of twin gold nanowires are superior to their tensile properties. For different length nanowires, there is a critical value of length with respect to the mechanical properties. When the length of nanowire is greater than the critical value, its mechanical properties are sensitive to length. The twin boundary spacing hardly affects the mechanical properties.

Keywords: molecular dynamics twinned crystal boundary gold nanowires uniaxial load mechanical properties

Received: 29 January 2016
Revised: 11 April 2016
Accepted manuscript online:

PACS:	62.25.-g	(Mechanical properties of nanoscale systems)
	61.46.-w	(Structure of nanoscale materials)
	81.07.Nb	(Molecular nanostructures)

Fund: Project supported by the National Science and Technology Pillar Program, China (Grant No. 2015BAK17B06), the Earthquake Industry Special Science Research Foundation Project, China (Grant No. 201508026-02), the Natural Science Foundation of Heilongjiang Province, China (Grant No. A201310), and the Scientific Research Starting Foundation for Post Doctorate of Heilongjiang Province, China (Grant No. LBHQ13040).

Corresponding Authors: Zai-Lin Yang
E-mail: yangzailin00@163.com

Cite this article:

Guo-Wei Zhang(张国伟), Zai-Lin Yang(杨在林), Gang Luo(罗刚) Investigation of mechanical properties of twin gold crystal nanowires under uniaxial load by molecular dynamics method 2016 Chin. Phys. B 25 086203

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Investigation of mechanical properties of twin gold crystal nanowires under uniaxial load by molecular dynamics method

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