Phase Smoothing for Mutual Coupling Mitigation in Multifunctional Metasurfaces Designed with Diffractive Neural Networks (Advanced Optical Materials 1/2026)

Multifunctional mmWave Metasurfaces This work presents a multifunctional diffractive neural network–designed metasurface capable of generating multiple holographic patterns in the W-band (86?GHz) while mitigating mutual coupling through phase smoothing. Experimental validation and broadband analysis (72–100 GHz) confirm high-fidelity wavefront control, demonstrating a passive, multifunctional mmWave holographic platform. More details can be found in the Research Article by Miguel Beruete and co-workers (DOI: 10.1002/adom.202502746).