in article number 2215105, miguel navarro-cía, yahong liu, kun song, and co-workers propose an ingenious strategy of modular design to construct multifunctional polarization controllers. similar to building blocks, this modular polarization controller can realize various broadband polarization control functions by combining different chiral metasurface modules, showing dynamic reconfigurable functionality. this modular strategy provides a new perspective for designing multifunctional polarization controllers.
