Controlling emission and absorption, and radiative heat transfer, is important for photonic
energy conversion and thermal management. However, the reciprocal emission and …

The reciprocity between thermal emission and absorption in materials that satisfy the
Lorentz reciprocity places a fundamental constraint on photonic energy conversion and …

Violating Kirchhoff's radiation law through magneto-optical materials or spatiotemporal
(Floquet) metamaterials can open a new door for engineering thermal radiation by breaking …

A nonreciprocal thermal emitter, consisting of a high refractive dielectric grating atop a Weyl
semimetal (WS) grating and a metallic reflector, is proposed and studied. The emitter …

Kirchhoff's law is one of the most fundamental law in thermal radiation. The violation of
traditional Kirchhoff's law provides possibilities for achieving energy conversion with higher …

The recent review [Phys. Rev. Appl. 18, 027001 (2022)] has considered that the existing
schemes of nonreciprocal radiation are greatly limited by the narrow-operated bandwidth …

Various nonreciprocal thermal emitters, which provide opportunities for higher energy
conversion efficiency, have been proposed to completely violate the traditional Kirchhoff's …

Singular behaviors are increasingly being found in structures supporting bound states in the
continuum (BICs), while the nonreciprocity with spectral phase singularity has not been …

Nonreciprocal radiation has potential applications in the fields of aerospace, energy
conversion, and communications. In this paper, the strong nonreciprocal radiation effect in …

The perfect nonreciprocal radiation effect for extreme small incident angle is studied. The
proposed scheme consists of a patterned magneto-optical (MO) material on a continuous …