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ISSN Online: 2377-424X

ISBN CD: 1-56700-226-9

ISBN Online: 1-56700-225-0

International Heat Transfer Conference 13
August, 13-18, 2006, Sydney, Australia

MOLECULAR DYNAMICS SIMULATIONS OF PHONON HEAT TRANSFER AT THE MICROSCALE

Get access (open in a dialog) DOI: 10.1615/IHTC13.p14.20
11 pages

Abstract

Miniaturization of electronic devices will lead to nanoscale structures in the near future. As the system size decreases, the heat dissipation density increases rapidly and the heat conduction becomes an important problem. Moreover, in very small systems the conduction is a size dependent phenomenon — conductivity decreases as the size decreases. In this paper, the molecular dynamics method with modified embedded atom and Lennard-Jones potentials is used to study non-equilibrium heat transfer in solid argon and silicon. In addition to system size, the role hot spot size in simulations is analysed quantitatively. A relaxation time for the hot spots is calculated based on the simulation results. Possibilities of studying the non-equilibrium nature heat transport in these simulations are discussed.