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

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Type
Preprint
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Submission Date
Identifiers
DOI: 10.1063/1.2837833
Source
arXiv
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Unknown
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Abstract

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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