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Issue 46, 2013
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Mechanical properties and instabilities of ordered graphene oxide C6O monolayers

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Abstract

We investigate the mechanical properties and instabilities of ordered honeycomb monolayer structures of graphene oxide C6O under various large strains using density functional theory. We found that the in-plane Young's modulus and intrinsic strengths are reduced by the oxidation of graphene with only the epoxy groups in ordered graphene oxide C6O by a factor of 20% and 33%, respectively, opposite to 11% increase of the Poisson's ratio. We obtained the second, third, fourth, and fifth order elastic constants for a rigorous continuum description of the nonlinear elastic response. The pressure effect on the second order elastic constants and Poisson's ratio were predicted from the third order elastic constants.

Graphical abstract: Mechanical properties and instabilities of ordered graphene oxide C6O monolayers

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Publication details

The article was received on 07 Sep 2013, accepted on 07 Oct 2013 and first published on 11 Oct 2013


Article type: Paper
DOI: 10.1039/C3RA44949A
Citation: RSC Adv., 2013,3, 24337-24344
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    Mechanical properties and instabilities of ordered graphene oxide C6O monolayers

    Q. Peng and S. De, RSC Adv., 2013, 3, 24337
    DOI: 10.1039/C3RA44949A

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