Work

Broadband directional thermal emission with anisothermal microsources

Year: 2025

Type: article

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 new 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.

Source: Physical review. B./Physical review. B

DOI: 10.1103/43y3-rh2f

Authors: F. Herz, R. Messina, P. Ben-Abdallah

Institutions: Centre National de la Recherche Scientifique, Université Paris-Saclay, Laboratoire Charles Fabry

Language: English

Topic: Thermal Radiation and Cooling Technologies

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funders: Deutsche Forschungsgemeinschaft, Agence Nationale de la Recherche

Awards: Many-body near-field radiative heat transfer, Über gekoppelte Dipolmethoden, die Rolle von Vakuumsfluktuationen in Wärmeflussfluktuationen und Fluktuationen der Strahlungskraft für beliebige Objekte und Umgebungen außerhalb des Gleichgewichts