Stimulator-multiplexing framework of microwave-infrared compatible reconfigurable metasurface integrated with LED array.

Metasurface can accurately control and manipulate electromagnetic (EM) waves with high degree of freedom, which is mainly due to their subwavelength structures and functional arrangements. However, most reconfigurable metasurfaces are currently limited to modulating EM waves in a single band. In order to further expand the application scenarios of metasurface, a stimulator-multiplexing framework of microwave-infrared compatible reconfigurable metasurface integrated with LED array is proposed. In this framework, a photoresistor is fully embedded into the meta-atom as an active device. Its resistance value can be adjusted through controlling the luminous intensity of the LED array. The LED array generates excitation light source, along with infrared characteristics. Therefore, it is not only the controller in the microwave band, but also the basic pixel in the infrared band. The framework adopts the way of stimulator-multiplexing, and the reconfigurable characteristics in the microwave and infrared bands can be realized through a single meta-atom structure. This work greatly enriches the metasurface design, which has a wide application prospect in many fields such as information transmission, and adaptive intelligent perception.