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Electromagnetic Wavefront Engineering by Switchable and Multifunctional Kirigami Metasurfaces.

Yingying Wang1,2, Yang Shi1,2, Liangwei Li1,2

  • 1Shanghai Engineering Research Centre of Ultra Precision Optical Manufacturing, Department of Optical Science and Engineering, School of Information Science and Technology, Fudan University, Shanghai 200433, China.

Nanomaterials (Basel, Switzerland)
|January 10, 2025
PubMed
Summary
This summary is machine-generated.

This study introduces a novel strategy for creating switchable and multifunctional metasurfaces using kirigami techniques. The developed metasurfaces enable flexible, low-cost control over light wavefronts for advanced photonics applications.

Keywords:
anomalous reflectionkirigami techniquemetasurfaceswitchable functionality

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Area of Science:

  • Photonics
  • Materials Science
  • Metasurfaces

Background:

  • Developing switchable and multifunctional metasurfaces is crucial for high-integration photonics.
  • Previous metasurfaces faced limitations in control degrees of freedom and system complexity.

Purpose of the Study:

  • To develop a general strategy for constructing switchable and multifunctional metasurfaces.
  • To demonstrate dynamic wavefront tailoring using kirigami techniques.

Main Methods:

  • Designed high-efficiency metasurfaces utilizing resonant and geometric phases.
  • Employed the "rotating square" (RS) kirigami technique to alter lattice constant and phase retardation.
  • Utilized spin-modulated wave-controls and polarization manipulation.

Main Results:

  • Achieved two spin-modulated wave-controls.
  • Demonstrated dynamic controls of three-channel beam steering with a kirigami metasurface.
  • Realized tri-channel complex wavefront engineering, including beam focusing and anomalous reflection.
  • Verified flexible switching among three functionalities by altering input wave polarization and transformation states.

Conclusions:

  • The proposed strategy offers a new pathway for switchable wavefront engineering.
  • The developed kirigami metasurfaces exhibit flexible control, low cost, and multiple switchable functionalities.
  • Microwave experiments confirmed good agreement with simulations, validating the metadevices' performance.