Dynamic near-field heat transfer between macroscopic surfaces

2017/11/07 by Karthik Sasihithlu, G. S. Agarwal, Sasihithlu, Karthik +1
Engineering · #FOS: Physical sciences #Heat Transfer Mechanisms #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Near-Field Optical Microscopy #Thermal Radiation and Cooling Technologies

paper · pdf · doi:10.48550/arxiv.1711.02398

openalex publication_date 2017/11/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The dynamic heat transfer between two half-spaces separated by a vacuum gap due to coupling of their surface modes is modelled using the theory that describes the dynamic energy transfer between two coupled harmonic oscillators each separately connected to a heat bath and with the heat baths maintained at different temperatures. The theory is applied for the case when the two surfaces are made up of a polar crystal which supports surface polaritons that can be excited at room temperature and the predicted heat transfer is compared with the steady state heat transfer value calculated from standard fluctuational electrodynamics theory. It is observed that for small time intervals the value of heat flux can reach as high as 1.5 times that of steady state value.

Related

• A coupled harmonic oscillator model to describe the near-field radiative heat transfer between nanoparticles and planar surfaces
• General formulation of coupled radiative and conductive heat transfer between compact bodies
• Local heating variations and transient effects in the coupling of thermal radiation and non-Fourier heat transport
• Tuning near field radiative heat flux through surface excitations with a metal insulator transition
• A microscopic theory for ultra-near-field radiation