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Mechanical properties of graphene under shear deformation K. Min and N. R. Alurua

Summary: Mechanical properties of graphene under shear deformation
K. Min and N. R. Alurua
Department of Mechanical Science and Engineering, Beckman Institute for Advanced Science
and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
Received 5 October 2010; accepted 7 December 2010; published online 7 January 2011
In this letter, we investigate the mechanical properties of graphene under shear deformation.
Specifically, using molecular dynamics simulations, we compute the shear modulus, shear fracture
strength, and shear fracture strain of zigzag and armchair graphene structures at various
temperatures. To predict shear strength and fracture shear strain, we also present an analytical theory
based on the kinetic analysis. We show that wrinkling behavior of graphene under shear deformation
can be significant. We compute the amplitude to wavelength ratio of wrinkles using molecular
dynamics and compare it with existing theory. Our results indicate that graphene can be a promising
mechanical material under shear deformation. 2011 American Institute of Physics.
Graphene has recently attracted significant attention
from the scientific community because of its extraordinary
mechanical and electrical properties. The attractive proper-
ties of graphene are currently being explored for a number of
applications including nanoelectromechanical systems, nano-
electronics, etc. Recent mechanical experiments have shown


Source: Aluru, Narayana R. - Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign


Collections: Engineering; Materials Science