Thermal rectification in asymmetric U-shaped graphene flakes

Details Thermal rectification in asymmetric U-shaped graphene flakes Thermal rectification in asymmetric U-shaped graphene flakes

2011-08-26

arxiv.org/abs/1108.5270v2

Physics

Condensed Matter

Materials Science

3 pages, 4 figures

Scientific paper

In this paper, we study the thermal rectification in asymmetric U-shaped graphene flakes by using nonequilibrium molecular dynamics simulations. The graphene flakes are composed by a beam and two arms. It is found that the heat flux runs preferentially from the wide arm to the narrow arm which indicates a strong rectification effect. The dependence of the rectification ratio upon the heat flux, the length and the width of the beam, the length and width of the two arms are studied. The result suggests a possible route to manage heat dissipation in U-shaped graphene based nanoelectronic devices.

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