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Nanoscale Res Lett. 2011 Aug 3;6:481. doi: 10.1186/1556-276X-6-481.

Mechanical characterization of nanoindented graphene via molecular dynamics simulations.

Author information

  • 1Department of Mechanical Engineering, National Kaohsiung University of Applied Sciences, 415 Chien Kung Rd,, Kaohsiung 807, Taiwan. fang.tehua@msa.hinet.net.

Abstract

The mechanical behavior of graphene under various indentation depths, velocities, and temperatures is studied using molecular dynamics analysis. The results show that the load, elastic and plastic energies, and relaxation force increased with increasing indentation depth and velocity. Nanoindentation induced pile ups and corrugations of the graphene. Resistance to deformation decreased at higher temperature. Strong adhesion caused topological defects and vacancies during the unloading process.

PMID:
21813011
PMCID:
PMC3211995
DOI:
10.1186/1556-276X-6-481
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