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physics.optics2026
A generalized Kirchhoff's law of thermal radiation for Floquet media
Sander A. Mann, Dimitrios L. Sounas, Andrea Alù
Kirchhoff's law fundamentally relates thermal emission to absorption. For linear, static, reciprocal media, it equates the emissivity and absorptivity for each direction and freque…
physics.optics2026
Finite-Size Effects in Nonlocal Metasurfaces
Tom Hoekstra, Sander A. Mann, Jorik van de Groep
Metasurfaces leveraging nonlocal resonances enable narrowband spectral control and strong near-fields, with applications spanning augmented reality, biosensing, and nonlinear optic…