Ultraviolet-sensing metasurface for programmable electromagnetic scattering field manipulation by combining light control with a microwave field

Abstract

Combining digital information science with metasurface technology is critical for achieving arbitrary electromagnetic wave manipulation. However, there is a scarcity of contemporary scholarly studies on this subject. In this paper, we propose an Ultraviolet (UV) sensing metasurface for programmable electromagnetic scattering field manipulation by combining light control with a microwave field. The active sensing of UV light and the real-time reaction of the scattering are achieved by integrating four UV sensors on the metasurface. On the metasurface, a UV sensor ML8511 and a voltage driver module are coupled to control each row of the Positive-Intrinsic-Negative (PIN) diodes. Due to the light sensing capability of the UV sensor, the on or off state of the PIN diode integrated into the programmable metasurface can be switched efficiently through the change of light. When the incident wave changes, various discrete data are transmitted to the FPGA. Then the FPGA performs the corresponding voltage distribution to control the state of the PIN diode. Finally, different metasurface coding sequences are generated to realize different electromagnetic functions. As a result, the spatial distribution of sensing light by sensors can be used to determine the electromagnetic field and connect sensing optical information with the microwave field. The simulation and measured results show that this design is feasible. This work provides a dimension for electromagnetic waves modulation.

Multi-Functional Reconfigurable Intelligent Surfaces for Enhanced Sensing and Communication

“…Each state combination is depicted using different colors for clarity. Theoretically, the beam deflection angle of a coding metasurface composed of N × N elements is as follows [23].…”

“…In a practical environment, a RIS will be deployed to enhance sensing and communication capability within existing communication systems [13,14]. Alternatively, the RIS itself can be integrated with sensors like UV sensors or gyroscopes, allowing it to adapt its response based on the collected sensing data, as demonstrated in studies such as [23,24].…”