Heat radiation and transfer for nanoparticles in the presence of a cylinder
arXiv:2312.09714 · doi:10.1103/PhysRevB.109.125412
Abstract
We study heat radiation and radiative heat transfer for nanoparticles in the presence of an infinitely long cylinder in different geometrical configurations, based on its electromagnetic Green's tensor. The heat radiation of a single particle can be enhanced by placing it close to a nanowire, and this enhancement can be much larger as compared to placing it close to a plate of the same material. The heat transfer along a cylinder decays much slower than through empty vacuum, being especially long-ranged in the case of a perfectly conducting nanowire, and showing nonmonotonic behavior in the case of a SiC cylinder. Exploring the dependence on the relative azimuthal angle of the nanoparticles, we find that the results are insensitive to small angles, but they can be drastically different when the angle is large, depending on the material. Finally, we demonstrate that a cylinder can either enhance or block the heat flux when placed perpendicular to the interparticle distance line, where the blocking in particular is strongly enhanced compared to the geometry of a sphere of same radius.
17 pages, 8 figures. Changes compared to v1: the title is changed; Figs. 3 and 6 (and the corresponding discussions in the text) were added; Refs. [39] and [42] were added; minor updates for most of the figures; minor changes in the text
References in corpus (14)
- Near-field Radiative Heat Transfer in Many-Body Systems
- Fluctuating surface-current formulation of radiative heat transfer for arbitrary geometries
- Radiative Heat Transfer in Anisotropic Many-Body Systems: Tuning and Enhancement
- Many body heat radiation and heat transfer in the presence of a non-absorbing background medium
- Graphene-based thermal repeater
- Radiative Heat Transfer in Fractal Structures
- Ballistic near-field heat transport in dense many-body systems
- Many-body effective thermal conductivity in phase-change nanoparticle chains due to near-field radiative heat transfer
- Radiative heat transfer between metallic nanoparticle clusters in both near field and far field
- Polarized light emission from individual incandescent carbon nanotubes
- Near-field radiative heat transfer between irregularly shaped dielectric particles modeled with the discrete system Green's function method
- Polarized thermal emission by thin metal wires
- Long-range super-Planckian heat transfer between nanoemitters in a resonant cavity
- Many-body interaction on near-field radiative heat transfer between two nanoparticles caused by proximate particle ensembles