We have calculated thermal conductance of graphene nanoribbons (GNRs) and their dependence on the type of ribbon edge termination (zigzag or armchair) and the width of the ribbon, which ranges from 50 to 50 μm. Our model incorporates the effect of edge roughness and includes edge roughness correlation functions for both types of termination. The dependence of thermal conductance on the width of the ribbons and relative contribution of different scattering mechanisms are also analyzed by means of the Green’s function approach to the edge scattering. High temperature thermal conductance of the nanoribbons was found to be 0.15 nW/K and 0.18 nW/K (corresponding to thermal conductivity, 4641 and 5266 W/mK, respectively, for 10 μm long GNRs) which is in a good agreement with the experimental results.
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December 2012
This article was originally published in
Journal of Heat Transfer
Research-Article
Thermal Conductivity of Graphene Nanoribbons: Effect of the Edges and Ribbon Width
Paul Plachinda,
Paul Plachinda
1
Graduate Research Assistant
Department of Physics,
e-mail: plachind@pdx.edu
Department of Physics,
Portland State University
,Portland, OR 97201
e-mail: plachind@pdx.edu
1Corresponding author.
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Raj Solanki
Raj Solanki
Search for other works by this author on:
Paul Plachinda
Graduate Research Assistant
Department of Physics,
e-mail: plachind@pdx.edu
Department of Physics,
Portland State University
,Portland, OR 97201
e-mail: plachind@pdx.edu
David Evans
Raj Solanki
1Corresponding author.
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received August 9, 2011; final manuscript received February 21, 2012; published online October 5, 2012. Assoc. Editor: Pamela M. Norris.
J. Heat Transfer. Dec 2012, 134(12): 122401 (7 pages)
Published Online: October 5, 2012
Article history
Received:
August 9, 2011
Revision Received:
February 21, 2012
Citation
Plachinda, P., Evans, D., and Solanki, R. (October 5, 2012). "Thermal Conductivity of Graphene Nanoribbons: Effect of the Edges and Ribbon Width." ASME. J. Heat Transfer. December 2012; 134(12): 122401. https://doi.org/10.1115/1.4006297
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