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Tunable/Reconfigurable Metasurfaces: Physics and Applications.

Qiong He1, Shulin Sun2, Lei Zhou1

  • 1State Key Laboratory of Surface Physics and Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200438, China.

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This summary is machine-generated.

Tunable and reconfigurable metasurfaces, using active elements, offer dynamic control over electromagnetic (EM) waves. This review covers mechanisms and applications of homogeneous and inhomogeneous metasurfaces for advanced EM wave manipulation.

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Area of Science:

  • Electromagnetism and Materials Science
  • Nanotechnology and Optics

Background:

  • Metasurfaces are ultrathin metamaterials composed of planar meta-atoms.
  • They exhibit tailored electromagnetic (EM) responses, enabling precise control over EM waves.

Purpose of the Study:

  • To review recent advancements in tunable and reconfigurable metasurfaces.
  • To focus on their working mechanisms, practical applications, and future directions.

Main Methods:

  • Categorization of approaches for homogeneous metasurfaces based on external stimuli.
  • Summarization of achievements in inhomogeneous metasurfaces with locally tuned meta-atoms.

Main Results:

  • Homogeneous metasurfaces provide uniform EM wave manipulation.
  • Inhomogeneous metasurfaces allow dynamic control over EM wave-fronts.

Conclusions:

  • Active elements enable tunable/reconfigurable metadevices for dynamic EM wave manipulation.
  • The field presents ongoing challenges and promising future research avenues.