Kirchhoff's law of reciprocal relation strongly violated, enabling more efficient energy harvesting, heat transfer, and infrared sensing

https://phys.org/news/2025-06-rewriting-century-physics-law-thermal.html 

"material's capability to absorb EMR at given wavelength/ angle must equal capability to emit at same wavelength/ angle strong violation enables new way to control thermal radiation... nonreciprocal emitters redirect/ capture otherwise wasted photons enabling harvesting solar energy at thermodynamic efficiency limits... 0.43 contrast between emissivity/ absorptivity over broad 10 µm wavelength band... can change object's temperature, subject it to strong magnetic field, key to strong breaking of Kirchhoff's law"