Size dependent mechanical properties of graphene nanoribbons: Molecular dynamics simulation

  • Y. J. Sun
  • , F. Ma
  • , K. W. Xu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations

Abstract

Strain engineering is an effective method to tune the band gap and electronic transport properties of graphene nanoribbons (GNRs). However, strain/stress field may promote the system deviating from the equilibrium state, and the mechanical stability will become one of the key issues for reliable services of relevant devices. In this paper, the size-dependent mechanical properties of GNRs under tensile loading were studied by Molecular Dynamics (MD) simulations. The results indicate that the yield stress of both zigzag and armchair GNRs decreases with the ribbon length changing from 240 Â to 30 Â. However, the ductility of armchair GNRs was significantly improved. Radial Distribution Function (RDF) was employed to analyze the evolution of atomic configurations. It showed that lattice shearing is the main mechanism for the ductility of armchair GNRs.

Original languageEnglish
Title of host publicationMaterials Performance, Modeling and Simulation
PublisherTrans Tech Publications Ltd
Pages456-460
Number of pages5
ISBN (Print)9783037856093
DOIs
StatePublished - 2013
EventChinese Materials Congress 2012, CMC 2012 - Taiyuan, China
Duration: 13 Jul 201218 Jul 2012

Publication series

NameMaterials Science Forum
Volume749
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

ConferenceChinese Materials Congress 2012, CMC 2012
Country/TerritoryChina
CityTaiyuan
Period13/07/1218/07/12

Keywords

  • Fracture stress
  • Graphene nanoribbons
  • Lattice shearing
  • Radial distribution function

Fingerprint

Dive into the research topics of 'Size dependent mechanical properties of graphene nanoribbons: Molecular dynamics simulation'. Together they form a unique fingerprint.

Cite this