Heat radiation and transfer for point particles in arbitrary geometries

Abstract

We study heat radiation and heat transfer for pointlike particles in a system of other objects. Starting from exact many-body expressions found from scattering theory and fluctuational electrodynamics, we find that transfer and radiation for point particles are given in terms of the Green's function of the system in the absence of the point particles. These general expressions contain no approximation for the surrounding objects. As an application, we compute the heat transfer between two point particles in the presence of a sphere of arbitrary size and show that the transfer is enhanced by several orders of magnitude through the presence of the sphere, depending on the materials. Furthermore, we compute the heat emission of a point particle in front of a planar mirror. Finally, we show that a particle placed inside a spherical mirror cavity does not radiate energy.

arXiv comment14 pages, 9 figures (v2: Sec. IIIE was added; explanation of Eq. (29) was added; sentence in Acknowledgments was added; Ref. [69] was added; minor changes in text)

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Cited by in corpus (27)

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• Metasurface-mediated anisotropic radiative heat transfer between nanoparticles
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• Enhancing near-field heat transfer between composite structures through strongly-coupled surface modes
• Magnetically tunable multi-band near-field radiative heat transfer between two graphene sheets
• Giant resonant radiative heat transfer between nanoparticles
• Radiative thermal switch exploiting hyperbolic surface phonon polaritons
• Scalable radiative thermal logic gates based on nanoparticle networks
• Heat radiation and transfer in confinement
• Thermal radiative energy exchange between a closely-spaced linear chain of spheres and its environment
• Green-Kubo relation for thermal radiation in non-reciprocal systems
• Topological near-field heat flow in a honeycomb lattice
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• Long-range super-Planckian heat transfer between nanoemitters in a resonant cavity
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• Twist-induced near-field radiative thermal regulator assisted by cylindrical surface modes
• Time-dependent radiative heat flux after the beginning of thermal radiation
• Generalized coupled dipole method for thermal far-field radiation
• Propulsion force and heat transfer for nonreciprocal nanoparticles
• Radiative heat transfer with a cylindrical waveguide decays logarithmically slow
• Reflectors Tune Near-Field Thermal Transport