Collective Near-Field Thermal Emission from Polaritonic Nanoparticle Arrays

Abstract

The spectral characteristics of near-field thermal emission from nanoparticle arrays are explained by comparison to the dispersions for propagating modes. Using the coupled dipole model, we analytically calculate the spectral emission from single particles, chains, planes, and 3D arrays of SiO2 and SiC. We show that the differences in their spectra are due to the existence or absence of propagating surface phonon polariton modes and that the emission is dominated by these modes when they are present. This work paves the way for understanding and control of near-field radiation in nanofluids, nanoparticle beds, and certain metamaterials.

7 pages, 4 figures

References in corpus (2)

• Heat Transport Through Plasmonic Interactions in Closely Spaced Metallic Nanoparticles Chains
• Heat Transfer Through Near-Field Interactions in Nanofluids

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• Topological phonon polariton enhanced radiative heat transfer in bichromatic nanoparticle arrays mimicking Aubry-André-Harper model
• Saturation of radiative heat transfer due to many-body thermalization
• Generalized many-body approach for near-field radiative heat transfer between nonspherical dipoles
• Near-field thermal emission from metasurfaces constructed of SiC ellipsoidal particles