Near-field thermal emission between corrugated surfaces separated by nano-gaps
Type :
Article
Publication Status :
published
Access :
restrictedAccess
Abstract
Near-field thermal radiation with its many potential applications in different fields requires a thorough understanding for the development of new devices. In this paper, we report that near-field thermal emission between two parallel SiC thin films separated by a nano-gap, supporting surface phonon polaritons, as modeled via Finite DifferenceTime Domain Method (FDTD), can be enhanced when structured nanoparticles of different shapes and sizes are present on the surface of the emitting films. We compare different nano-particle shapes and discuss the configurations, which have the highest impact on the enhancement of near-field thermal emission and on the near-field heat flux. Convolutional Perfectly Matched Layer (CPML) boundary condition is used as the boundary condition of choice as it was determined to give the most accurate results compared against the other methodologies when working with sub-wavelength structures.
Source :
Journal of Quantitative Spectroscopy and Radiative Transfer
Date :
2015
Volume :
158
Publisher :
Elsevier
URI
http://hdl.handle.net/10679/2743http://www.sciencedirect.com/science/article/pii/S0022407315000692
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