The kinetic theory of gas is used to predict the specific heat and thermal conductivity of ZnO nanostructures. In this model, phonons are considered as a gas whose basic properties are given by phonon dispersion curves. The model also requires knowledge of the boundary relaxation time parameter (F), the defect relaxation time parameter D, and the relaxation time parameters which take into account lattice anisotropy. These parameters can be determined independently from experimental measurements. Excellent agreements were found when comparing both the estimated specific heat and thermal conductivity to bulk sample measurement data. Comparison with previous results obtained with molecular dynamics (MD) simulations leads to the conclusion that for ultra narrow nanobelts, thermal conductivity depends on their length. Behavior of the thermal conductivity of nanofilms is also studied. The results are consistent with previous works on 1D and 2 D systems. Finally, the thermal conductivity of nanobelts is presented as are the influences of boundary and defect parameters.
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e-mail: Patrice.chantrenne@insa-lyon.fr
e-mail: fulbrighter@hotmail.com
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Prediction of the Thermal Conductivity of ZnO Nanostructures
P. Chantrenne,
P. Chantrenne
Centre de Thermique de Lyon CETHIL UMR 5008,
e-mail: Patrice.chantrenne@insa-lyon.fr
Université de Lyon
, INSA de Lyon, CNRS Université de Lyon 1, Lyon F-69621, France
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C. Ould-Lahoucine
C. Ould-Lahoucine
Department of Mechanical Engineering,
e-mail: fulbrighter@hotmail.com
University of Guelma
, 24000 Guelma, Algeria
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P. Chantrenne
Centre de Thermique de Lyon CETHIL UMR 5008,
Université de Lyon
, INSA de Lyon, CNRS Université de Lyon 1, Lyon F-69621, France
e-mail: Patrice.chantrenne@insa-lyon.fr
C. Ould-Lahoucine
Department of Mechanical Engineering,
University of Guelma
, 24000 Guelma, Algeria
e-mail: fulbrighter@hotmail.com
J. Heat Transfer. Apr 2012, 134(4): 042401 (7 pages)
Published Online: February 13, 2012
Article history
Received:
September 21, 2011
Online:
February 13, 2012
Published:
February 13, 2012
Citation
Chantrenne, P., and Ould-Lahoucine, C. (February 13, 2012). "Prediction of the Thermal Conductivity of ZnO Nanostructures." ASME. J. Heat Transfer. April 2012; 134(4): 042401. https://doi.org/10.1115/1.4005164
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