Broadband directional thermal emission with anisothermal microsources
Phys. Rev. B 112, 035403 – Published 2 July, 2025
DOI: https://doi.org/10.1103/43y3-rh2f
Abstract
Thermal emission is naturally spatially incoherent and lacks directionality. Here, we demonstrate that by precisely controlling the spatial temperature distribution within a solid, directional thermal emission can be achieved across a broad spectral range. These anisothermal sources open different avenues for manipulating radiative heat flux at the microscale and hold promise for applications in thermal management and energy conversion, enabling more efficient and targeted thermal control.
