Interface thermal behavior in nanomaterials by thermal grating relaxation

Abstract

We study the relaxation of a thermal grating in multilayer materials with interface thermal resistances. The analytical development allows for the nu- merical determination of this thermal property in Approach to Equilibrium Molecular Dynamics and suggests an experimental setup for its measurement. Possible non-diffusive effects at the nanoscale are take into consideration by a non-local formulation of the heat equation. As a case study, we numerically apply the present approach to silicon grain boundary thermal resistance

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