Mechanical Properties Of Graphene Using Different Potentials

1434 Words May 8th, 2015 6 Pages
Mechanical Properties of Graphene using Different Potentials
G. Rajasekaran and Avinash Parashar*
Department of Mechanical and Industrial Engineering Indian Institute of Technology, Roorkee - 247667, India
* Corresponding author: E-Mail: drap1fme@iitr.ac.in, Ph: +91-1332-284801
Abstract

1.0 Introduction
Due to outstanding properties, graphene got more attention by the scientific community; all its exceptional properties are owing to hexagonal monolayer of honeycomb lattice packed with carbon atoms. The mechanical properties of graphene have been investigated using various experimental, theoretical and computational approaches. By experimental based work, Lee et al. [1] estimated the mechanical properties of graphene such as Young’s modulus of about 1.0 ± 0.1 TPa and fracture strength of 130 ± 10 GPa. Frank et al. [2] estimated Young’s modulus of 0.5 TPa for 2 to 8nm thickness of graphene sheets. Zhang et al. [3] measured Young’s modulus of 0.89 TPa for single layer graphene sheet. Besides experimental work, numerous theoretical and computational studies have been carried out to investigate mechanical properties of graphene. By orthogonal tight-binding method Zhao et al. [4] estimated Young’s modulus of 1.01 ± 0.03 and fracture strength and strain of 107 GPa and 0.20 in zigzag direction and 90 GPa and 0.13 in armchair direction respectively. By Ab initio calculation Liu et al. [5] estimated young’s modulus of 1.05 TPa and also estimated uniaxial tensile stress of 121…
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