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arXiv · 2205.08342

Radiative heat transfer with a cylindrical waveguide decays logarithmically slow

Kiryl Asheichyk·Matthias Krüger
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Abstract

Radiative heat transfer between two far-field-separated nanoparticles placed close to a perfectly conducting nanowire decays logarithmically slow with the interparticle distance. This makes a cylinder an excellent waveguide which can transfer thermal electromagnetic energy to arbitrary large distances with almost no loss. It leads to a dramatic increase of the heat transfer, so that, for almost any (large) separation, the transferred energy can be as large as for isolated particles separated by a few hundred nanometers. A phenomenologically found analytical formula accurately describes the numerical results over a wide range of parameters.

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Kiryl Asheichyk, Matthias Krüger. 2022-05-17. Radiative heat transfer with a cylindrical waveguide decays logarithmically slow. https://doi.org/10.1103/physrevlett.129.170605

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