Interface thermal behavior in nanomaterials by thermal grating relaxation
Pier Luca Palla, Sonia Zampa, Evelyne Lampin, Fabrizio Cleri
TL;DR
This paper investigates the thermal relaxation behavior of nanomaterials with interfaces, proposing a method to measure interface thermal resistance using thermal grating relaxation and considering non-diffusive nanoscale effects.
Contribution
It introduces an analytical and numerical approach to determine interface thermal resistance in multilayer nanomaterials, including non-local effects, and suggests an experimental setup for measurement.
Findings
Numerical application to silicon grain boundary thermal resistance.
Inclusion of non-local effects at the nanoscale.
Proposal of an experimental measurement approach.
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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Taxonomy
TopicsThermal properties of materials · Thermoelastic and Magnetoelastic Phenomena · Thermal Radiation and Cooling Technologies