Thermal transport in 2D and 3D nanowire networks

Abstract

We report on thermal transport properties in 2 and 3 dimensions interconnected nanowire networks (strings and nodes). The thermal conductivity of these nanostructures decreases in increasing the distance of the nodes, reaching ultra-low values. This effect is much more pronounced in 3D networks due to increased porosity, surface to volume ratio and the enhanced backscattering at 3D nodes compared to 2D nodes. We propose a model to estimate the thermal resistance related to the 2D and 3D interconnections in order to provide an analytic description of thermal conductivity of such nanowire networks; the latter is in good agreement with Molecular Dynamic results.

References in corpus (5)

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Cited by in corpus (5)

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• Hierarchically nanostructured thermoelectric materials: Challenges and opportunities for improved power factors
• Thermal transport enhancement of hybrid nanocomposites; impact of confined water inside nanoporous silicon
• Thermal rectification optimization in nanoporous Si using Monte Carlo simulations
• Entropic signature of resonant thermal transport: Ordered form of heat conduction