3 papers
physics.optics2025
Many-Body Floquet Theory for Radiative Heat Transfer in Time-Modulated Systems
Riccardo Messina, Philippe Ben-Abdallah
We develop a general theory of radiative heat exchange between dipoles with time-modulated optical properties. This framework extends fluctuational electrodynamics beyond equilibri…
cond-mat.mes-hall2025
Near-field focusing and amplification of tip-substrate radiative heat transfer
Milo Vescovo, Philippe Ben-Abdallah, Riccardo Messina
The spatially resolved near-field radiative heat transfer between a nanoscale probe and a substrate is studied in the fluctuational electrodynamics framework within the dipolar app…
physics.optics2025
Broadband directional thermal emission with anisothermal microsources
Florian Herz, Riccardo Messina, Philippe Ben-Abdallah
Thermal emission is naturally spatially incoherent and lacks directionality. Here, we demonstrate that by precisely controlling the spatial temperature distribution within a solid,…