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

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 compres...

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Bibliographic Details
Published inChinese physics B Vol. 25; no. 8; pp. 279 - 283
Main Author 张国伟 杨在林 罗刚
Format Journal Article
LanguageEnglish
Published 01.08.2016
Subjects
Compressive properties
Crystal structure
Gold
Mathematical analysis
Mechanical properties
Nanowires
Tensile stress
Twin boundaries
分子动力学方法
力学性能
加载方向
单轴
压缩载荷
拉伸载荷
载荷作用
金纳米线
Online AccessGet full text
ISSN1674-1056
2058-3834
1741-4199
DOI10.1088/1674-1056/25/8/086203

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Summary: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.
Bibliography:Guo-Wei Zhang, Zai-Lin Yang, Gang Luo（College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China）
molecular dynamics, twinned crystal boundary, gold nanowires, uniaxial load, mechanical prop-erties
11-5639/O4
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.
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ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/25/8/086203