Increase of Thermal Resistance Between a Nanostructure and a Surface due to Phonon Multireflections

Details Increase of Thermal Resistance Between a Nanostructure and a Surface due to Phonon Multireflections Increase of Thermal Resistance Between a Nanostructure and a Surface due to Phonon Multireflections

2007-11-29

arxiv.org/abs/0711.4718v1

Physics

Classical Physics

Scientific paper

10.1063/1.2837833

The thermal resistance between a nanostructure and a half-body is calculated in the framework of particle-phonons physics. The current models approximate the nanostructure as a thermal bath. We prove that the multireflections of heat carriers in the nanostructure significantly increase resistance in contradiction with former predictions. This increase depends on the shape of the nanostructure and the heat carriers mean free path only. We provide a general and simple expression for the contact resistance and examine the specific cases of nanowires and nanoparticles.

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