3D Printed Spin‐Decoupled Transmissive Metasurfaces Based on Versatile Broadband Cross‐Polarization Rotation Meta‐Atom (Advanced Optical Materials 4/2023)

Spin-decoupled broadband transmissive metasurfaces were implemented with three-dimensional (3D) nine-layer unit cells using additive manufacturing (see article number 2202416 by Jianfeng Zhu, Yang Yang, Fan Wang, and co-workers). The concept of antenna–circuit–antenna was applied to designing the hierarchical 3D metasurfaces to manipulate the electromagnetic wavefronts achieving two spin-decoupled beams efficiently. The proposed meta-atom idea is unique. The demonstrated 3D printing strategy opens a new avenue for designing and fabricating 3D high-performance functional metasurfaces.