TITLE

Intrinsic anisotropy of thermal conductance in graphene nanoribbons

AUTHOR(S)
Yong Xu; Xiaobin Chen; Bing-Lin Gu; Wenhui Duan
PUB. DATE
December 2009
SOURCE
Applied Physics Letters;12/7/2009, Vol. 95 Issue 23, p233116
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Thermal conductance of graphene nanoribbons (GNRs) with the width varying from 0.5 to 35 nm is systematically investigated using nonequilibrium Green’s function method. Anisotropic thermal conductance is observed with the room temperature thermal conductance of zigzag GNRs up to ∼30% larger than that of armchair GNRs. At room temperature, the anisotropy is found to disappear when the width is larger than 100 nm. This intrinsic anisotropy originate from different boundary condition at ribbon edges, and can be used to tune thermal conductance, which have important implications for the applications of GNRs in nanoelectronics and thermoelectricity.
ACCESSION #
46708336

 

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