Ultraviolet-sensing metasurface for programmable electromagnetic scattering field manipulation by combining light...

Area of Science:

• Metasurface technology
• Digital information science
• Electromagnetic wave manipulation

Background:

• Combining digital information science and metasurface technology is crucial for advanced electromagnetic wave control.
• There is a limited amount of current research on integrating these fields for practical applications.

Purpose of the Study:

• To propose and demonstrate an Ultraviolet (UV) sensing metasurface for programmable electromagnetic scattering field manipulation.
• To integrate light sensing capabilities with microwave field control for real-time electromagnetic modulation.

Main Methods:

• Integration of four UV sensors (ML8511) and voltage driver modules to control Positive-Intrinsic-Negative (PIN) diodes on the metasurface.
• Utilizing the UV sensor's light-sensing capability to switch PIN diode states based on ambient light changes.
• Employing a Field-Programmable Gate Array (FPGA) to process incident wave data, distribute voltage, and generate metasurface coding sequences.

Main Results:

• Demonstrated feasible real-time control of electromagnetic scattering fields through light-induced switching of PIN diodes.
• Successfully generated distinct metasurface coding sequences to achieve varied electromagnetic functions.
• Established a connection between optical sensing information and microwave field behavior.

Conclusions:

• The proposed UV sensing metasurface effectively modulates electromagnetic waves by linking optical sensing to microwave field control.
• This work presents a new approach for electromagnetic wave modulation, offering a novel dimension in the field.
• The design is validated through simulation and experimental measurements, confirming its practical feasibility.