Issue 27, 2019

Negative differential thermal resistance through nanoscale solid–fluid–solid sandwiched structures

Abstract

In this work, we propose a negative differential thermal resistance (NDTR) system using a nanoscale sandwiched fluid. Non-equilibrium molecular dynamics simulations and kinetic theory analyses show that the heat flux through the system can be suppressed and even prohibited when the temperature difference across the system becomes sufficiently high. The phenomenon of NDTR is caused by the fluid adsorption on the solid surface at the cold end, which reduces the number density of the free fluid molecules and increases the total thermal resistance of the whole system. The proposed NDTR system provides theoretical insights for the design of certain thermal devices.

Graphical abstract: Negative differential thermal resistance through nanoscale solid–fluid–solid sandwiched structures

Supplementary files

Article information

Article type
Paper
Submitted
22 Feb 2019
Accepted
27 Jun 2019
First published
27 Jun 2019

Nanoscale, 2019,11, 13051-13057

Negative differential thermal resistance through nanoscale solid–fluid–solid sandwiched structures

F. Li, J. Wang, G. Xia and Z. Li, Nanoscale, 2019, 11, 13051 DOI: 10.1039/C9NR01606F

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