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Numerical investigation of mechanical properties of nanowires: a review

  • Gu, Y.T. (School of Engineering Systems, Queensland University of Technology) ;
  • Zhan, H.F. (School of Engineering Systems, Queensland University of Technology) ;
  • Xu, Xu (School of Mathematics, Jilin University)
  • Received : 2011.07.31
  • Accepted : 2012.04.05
  • Published : 2012.06.25

Abstract

Nanowires (NWs) have attracted intensive researches owing to the broad applications that arise from their remarkable properties. Over the last decade, immense numerical studies have been conducted for the numerical investigation of mechanical properties of NWs. Among these numerical simulations, the molecular dynamics (MD) plays a key role. Herein we present a brief review on the current state of the MD investigation of nanowires. Emphasis will be placed on the FCC metal NWs, especially the Cu NWs. MD investigations of perfect NWs' mechanical properties under different deformation conditions including tension, compression, torsion and bending are firstly revisited. Following in succession, the studies for defected NWs including the defects of twin boundaries (TBs) and pre-existing defects are discussed. The different deformation mechanism incurred by the presentation of defects is explored and discussed. This review reveals that the numerical simulation is an important tool to investigate the properties of NWs. However, the substantial gaps between the experimental measurements and MD results suggest the urgent need of multi-scale simulation technique.

Keywords

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