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Electrically switchable metallic polymer metasurface device with gel polymer electrolyte.

Derek de Jong1,2, Julian Karst1, Dominik Ludescher1

  • 14th Physics Institute and Research Center ScoPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany.

Nanophotonics (Berlin, Germany)
|April 28, 2023
PubMed
Summary

This study introduces a novel, electrically switchable metasurface device using PEDOT:PSS. This compact technology enables tunable plasmonic resonances and beam steering for advanced optical applications.

Keywords:
beam switchingmetadevicemetasurfacesnanophotonicsplasmonicspolymers

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Area of Science:

  • Materials Science
  • Optoelectronics
  • Nanotechnology

Background:

  • Metasurfaces offer unique light manipulation capabilities.
  • Electrical switching of metasurface properties is crucial for dynamic optical devices.
  • Conductive polymers like PEDOT:PSS present opportunities for tunable optical responses.

Purpose of the Study:

  • To develop an electrically switchable metasurface device.
  • To demonstrate reversible switching of plasmonic resonances and beam steering.
  • To explore the potential for CMOS-compatible, solid-state optical components.

Main Methods:

  • Fabrication of a metasurface device using PEDOT:PSS and a gel polymer electrolyte.
  • Application of square-wave voltages to induce reversible dielectric-to-metallic switching of PEDOT:PSS.
  • Characterization of plasmonic resonance switching and beam steering performance.

Main Results:

  • Demonstrated reversible ON/OFF switching of plasmonic resonances (2-3 µm wavelength).
  • Achieved electrically controlled beam switching up to 10°.
  • Reported high switching frequencies (up to 10 Hz) with fast oxidation (42 ms) and reduction (57 ms) times.

Conclusions:

  • The developed metasurface device is compact, standalone, and CMOS compatible.
  • This work lays the foundation for solid-state switchable metasurfaces.
  • Potential applications include submicrometer-pixel spatial light modulators and switchable holographic devices.