Tetra-functional switchable
By applying different external excitations, the same metasurface can act as a modulator, absorber, half-wave plate, and quarter-wave plate in the broadband terahertz range, enabling multifunctional control of propagation and polarization.
Wang, Dongjie · He, Xunjun · Jiang, Jiuxing · Yao, Yongtao · Lu, Guangjun
Diamond and Related Materials 2023
Switchable tetra-function: broadband modulator, absorber, half-wave plate, and quarter-wave plate
Flexible modulation by individually or simultaneously changing the combination and intensity of external excitations
Multilayer configuration integrating two patterned graphenes and a photosensitive silicon layer