Proximity Effects in Radiative Transfer

Abstract

Though the dependence of near-field radiative transfer on the gap between two planar objects is well understood, that between curved objects is still unclear. We show, based on the analysis of the surface polariton mediated radiative transfer between two spheres of equal radii $R$ and minimum gap $d$, that the near--field radiative transfer scales as $R/d$ as $d/R\to 0$ and as $\ln (R/d)$ for larger values of $d/R$ up to the far--field limit. We propose a modified form of the proximity approximation to predict near--field radiative transfer between curved objects from simulations of radiative transfer between planar surfaces.

5 journal pages, 4 figures

References in corpus (6)

• Precision Measurement of the Casimir Force from 0.1 to 0.9 microns
• Near-field radiative heat transfer between a sphere and a substrate
• A mesoscopic description of radiative heat transfer at the nanoscale
• Casimir effect for curved geometries: PFA validity limits
• Resonant photon tunneling enhancement of the radiative heat transfer
• The Casimir effect in the nanoworld

Cited by in corpus (26)

• Near-field Radiative Heat Transfer in Many-Body Systems
• Trace formulae for non-equilibrium Casimir interactions, heat radiation and heat transfer for arbitrary objects
• Integrated near-field thermo-photovoltaics for on-demand heat recycling
• Fluctuating surface-current formulation of radiative heat transfer: theory and applications
• Exact microscopic theory of electromagnetic heat transfer between a dielectric sphere and plate
• Non-equilibrium Fluctuational Quantum Electrodynamics: Heat Radiation, Heat Transfer, and Force
• Radiative heat transfer between two dielectric nanogratings in the scattering approach
• Fluctuating volume-current formulation of electromagnetic fluctuations in inhomogeneous media: incandecence and luminescence in arbitrary geometries
• A Green's function formalism of energy and momentum transfer in fluctuational electrodynamics
• Near-field radiative heat transfer between arbitrarily-shaped objects and a surface
• Convergence analysis of the thermal discrete dipole approximation
• Thermal conductance and thermoelectric figure of merit of C${}_{60}$-based single-molecule junctions: electrons, phonons, and photons
• Heat radiation and transfer in confinement
• Heat transfer between anisotropic nanopartricles: Enhancement and switching
• Near field radiative thermal transfer between nano-structured periodic materials
• Near-field thermal electromagnetic transport: An overview
• Near-field radiative heat transfer between irregularly shaped dielectric particles modeled with the discrete system Green's function method
• Thermal radiative energy exchange between a closely-spaced linear chain of spheres and its environment
• Three-body radiation dynamics in systems with anisotropic nanoparticles
• Interplay of roughness/modulation and curvature at proximity
• Near-field thermal radiative transfer between two coated spheres
• Radiative energy and momentum transfer for various spherical shapes: a single sphere, a bubble, a spherical shell and a coated sphere
• Small distance expansion for radiative heat transfer between curved objects
• A thermokinetic approach to radiative heat transfer at the nanoscale
• Something Can Come of Nothing: Surface Approaches to Quantum Fluctuations and the Casimir Force
• Time-dependent radiative heat flux after the beginning of thermal radiation