A multi-band nonreciprocal thermal emitter involving a Weyl semimetal with a Thue–Morse multilayer

Abstract

The giant enhancement of multi-band nonreciprocal radiation effect, which based on the Weyl semimetal-dielectric spacer-Thue morse multilayer-metallic mirror structure, is investigated. As an illustration, a novel dual-band nonreciprocal thermal emitter...

Wide-angle and Fano-shape contrast between emission and absorption in hybrid polariton-involved planar structure

“…In simulations, we employ the 4 × 4 transfer matrix method (TMM) to study the anisotropic optical performances of the proposed emitter by using Matlab codes. Then the emission can be calculated by [59,60]:…”

“…The above simulation results show that the proposed emitter has robust angle tolerance for s-polarization, which is crucial and needful for harvesting emission and absorption. Compared with photonic crystal and complex structures [58,60,63], strong nonreciprocity supported with limited layers (3 layers) has been numerically demonstrated, which is attributed from the hybrid polaritons formed by coupling PhPs and ENZ mode when modal frequencies are overlapped. It also provides a relatively simple structure to break Kirchhoff's law under both and p-polarizations.…”

A tunable infrared emitter based on phase-changing material GST for visible-infrared compatible camouflage with thermal management

“…An object at a temperature higher than absolute zero (0 K) continuously radiates electromagnetic waves into free space, and this phenomenon is known as thermal radiation. 1 Therefore, the ability to control thermal radiation in the near- and far-field is essential for some practical applications, including solar energy harvesting, 2,3 infrared camouflage, 4 spacecraft thermal control devices, 5 near-field radiative heat transfer, 6 and passive daytime radiative cooling. 7 According to Planck's blackbody radiation law, the thermal radiation spectra of most objects are mainly located in the infrared bands.…”