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Effect of Tensile Strain on Thermal Properties of Graphene

Published online by Cambridge University Press:  13 February 2014

Ayman Salman Alofi  and
Gyaneshwar P. Srivastava
Ayman Salman Alofi
Affiliation:
School of Physics, University of Exeter, Stocker Road, Exeter, EX4 4QL, UK
Gyaneshwar P. Srivastava
Affiliation:
School of Physics, University of Exeter, Stocker Road, Exeter, EX4 4QL, UK
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Abstract

We have employed a semicontinuum model to investigate the effect of tensile strain on thermal properties of graphene. Analytical expressions derived by Nihira and Iwata for phonon dispersion relations and vibrational density of states are employed, based on the semicontinuum model proposed by Komatsu and Nagamiya. The thermal conductivity is computed within the framework of Callaway’s effective relaxation time theory. It is found that thermal properties of graphene are quite sensitive to tensile strain. In the presence of tensile strain, the specific heat increases but the thermal conductivity decreases.

Keywords

stress/strain relationshipthermal conductivityspecific heat
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1661: Symposium UU – Phonon-Interaction-Based Materials Design—Theory, Experiments and Applications , 2014 , mrsf13-1661-uu02-08
Copyright
Copyright © Materials Research Society 2014 

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