In this paper, phonon transmission through a graphene sheet is investigated using an atomistic Green’s function (AGF) method. Reported best-fit results from first-principles calculations using a 4th nearest neighbor force-constant (4NNFC) model are used to establish the matrices that describe the interactions among carbon atoms. Calculations reveal that graphene dispersion curves so obtained are in good agreement with experiments as well as other published first-principles calculations. The effect of carbon isotopes on thermal conductance is investigated, and the results reveal that isotopic doping moderately reduces both phonon transmission function and thermal conductance. The phonon transmission function of each vibrational branch in the heterogeneous interface is also calculated based on a method described in recent work, and comparisons indicate the major and minor channels of phonon transport through graphene. The results herein offer a useful reference and suggest directions for future research on thermal applications of this material.
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ASME 2009 International Mechanical Engineering Congress and Exposition
November 13–19, 2009
Lake Buena Vista, Florida, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-4385-7
PROCEEDINGS PAPER
Simulation of Phonon Transmission Through Graphene With a Green’s Function Method
Zhen Huang,
Zhen Huang
Purdue University, West Lafayette, IN
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Timothy Fisher,
Timothy Fisher
Purdue University, West Lafayette, IN
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Jayathi Murthy
Jayathi Murthy
Purdue University, West Lafayette, IN
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Zhen Huang
Purdue University, West Lafayette, IN
Timothy Fisher
Purdue University, West Lafayette, IN
Jayathi Murthy
Purdue University, West Lafayette, IN
Paper No:
IMECE2009-10651, pp. 971-980; 10 pages
Published Online:
July 8, 2010
Citation
Huang, Z, Fisher, T, & Murthy, J. "Simulation of Phonon Transmission Through Graphene With a Green’s Function Method." Proceedings of the ASME 2009 International Mechanical Engineering Congress and Exposition. Volume 12: Micro and Nano Systems, Parts A and B. Lake Buena Vista, Florida, USA. November 13–19, 2009. pp. 971-980. ASME. https://doi.org/10.1115/IMECE2009-10651
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