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Photonic thermal conduction by infrared plasmonic resonators in semiconductor nanowires
Ist Teil von
Applied physics letters, 2019-04, Vol.114 (16)
Ort / Verlag
United States: American Institute of Physics (AIP)
Erscheinungsjahr
2019
Quelle
American Institute of Physics (AIP) Journals
Beschreibungen/Notizen
Photons typically do not contribute to thermal transport within a solid due to their low energy density and tendency to be absorbed quickly. In this article, we propose a practical material system—infrared plasmonic resonators embedded in a semiconductor nanowire—that leverages near-field electromagnetic coupling to achieve photonic thermal transport comparable to the electronic and phononic contributions. We analytically show photonic thermal conductivities up to about 1 W m-1 K-1 for 10 nm diameter Si and InAs nanowires containing repeated resonators at 500 K. Finally, the nanowire system outperforms plasmonic particles in isotropic environments and presents a pathway for photonic thermal transport to exceed that of phonons and electrons.