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Updated: Aug 11, 2025

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

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Published on: June 7, 2019

Infrared-controlled programmable metasurface.

Ya-Lun Sun¹, Xin-Ge Zhang¹, Qian Yu¹

¹State Key Laboratory of Millimeter Waves, School of Information Science and Engineering, Southeast University, Nanjing 210096, China.

Science Bulletin

|February 7, 2023

Summary

This summary is machine-generated.

This study introduces an infrared-controlled programmable metasurface for real-time electromagnetic wave manipulation. This innovation simplifies remote control, enabling dynamic tuning of metasurfaces without complex wiring.

Keywords:

Beam scanning Beam splitting Infrared-controlled programmable metasurfaces Remotely-tuning

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Area of Science:

Metamaterials and Nanophotonics
Electromagnetic Wave Manipulation
Advanced Materials Science

Background:

Programmable metasurfaces offer real-time control over electromagnetic (EM) waves by altering the states of embedded active devices.
Traditional remote control of metasurfaces necessitates extensive wiring from field-programmable gate arrays (FPGAs), posing practical challenges for long-distance applications.

Purpose of the Study:

To propose and demonstrate an infrared-controlled programmable metasurface for remote, real-time EM wave manipulation.
To overcome the limitations of wired control systems in programmable metasurfaces.

Main Methods:

Integration of an infrared transceiver to remotely switch coding sequences stored in an FPGA controller.
Utilizing the controller to adjust the voltage on varactors embedded within the metasurface elements.
Experimental validation at microwave frequencies to assess the remote control capabilities.

Main Results:

Successful remote programming of the metasurface using infrared signals.
Demonstrated ability to remotely alter the scattering beam characteristics of the metasurface.
Experimental results confirm the effectiveness of the proposed infrared control mechanism.

Conclusions:

The developed infrared-controlled programmable metasurface provides a convenient and effective solution for remote tuning.
This technology paves the way for a new generation of dynamic, remotely tunable metasurfaces.
Enables advanced applications requiring real-time, on-demand control of electromagnetic wave propagation.