Twist-induced near-field radiative thermal regulator assisted by cylindrical surface modes

Abstract

Near-field radiative heat transfer (RHT) can surpass Planck's blackbody limit by several orders of magnitude due to the tunneling effect of thermal photons. The ability to understand and regulate RHT is of great significance in contactless energy transfer. In this work, we construct a rotating system with a hexagonal boron nitride (h-BN) cylinder for actively regulating the RHT between two nanoparticles (NPs). The results show that when the two NPs are located directly above the cylinder, energy can be directionally transmitted along the cylindrical channel in the form of low-loss surface waves, which can significantly enhance RHT. In addition, we find that the RHT can be regulated by actively manipulating the excitation of cylindrical surface modes. When the rotation point is located in the middle of the line connecting the two NPs, the modulation contrast approaches five orders of magnitude, higher than that of cylinders made of other materials under the same conditions. When its diameter is slightly less than the distance between NPs, the h-BN cylinder shows excellent tunability in the heat exchange. The present work may offer a theoretical possibility for actively regulating and controlling near-field RHT between arbitrary objects based on cylindrical waveguides.

References in corpus (19)

• Near-field Radiative Heat Transfer in Many-Body Systems
• Near-field heat transfer between graphene/hBN multilayers
• Radiative thermal diode driven by non-reciprocal surface waves
• Twist-induced control of near-field heat radiation between magnetic Weyl semimetals
• Radiative thermal switch exploiting hyperbolic surface phonon polaritons
• Many-body effective thermal conductivity in phase-change nanoparticle chains due to near-field radiative heat transfer
• Multi-tip near-field scanning thermal microscopy
• Twist-induced Near-field Thermal Switch Using Nonreciprocal Surface Magnon-Polaritons
• Perspective on Near-Field Radiative Heat Transfer
• High-rectification near-field radiative thermal diode using Weyl semimetals
• Control of the Radiative Heat Transfer in a Pair of Rotating Nanostructures
• Long-range super-Planckian heat transfer between nanoemitters in a resonant cavity
• Photothermal behavior for two-dimensional nanoparticle ensembles: Multiple scattering and thermal accumulation effects
• Twisting the near-field radiative heat switch in hyperbolic antiferromagnets
• Near-field radiative heat transfer between shifted graphene gratings
• Magnetic field control of the near-field radiative heat transfer in three-body planar systems
• Effect of graphene grating coating on near-field radiative heat transfer
• Heat radiation and transfer for nanoparticles in the presence of a cylinder
• Spatial Coherence of Thermal Emission by a Sphere