Electrically Switchable Color Tags Based on Active Liquid-Crystal Plasmonic Metasurface Platform

Mukesh Sharma, Netta Hendler, Tal Ellenbogen

Research output: Contribution to journalArticlepeer-review


Recent demonstrations of metasurfaces show their great potential to realize flat and multifunctional optical elements, viable for many new device applications. Yet, a major frontier in this field is to develop active, tunable, and reconfigurable metasurface platforms. These are highly desirable in modern technologies that require dynamic modulation of light. To achieve this goal, in this work an active liquid-crystal (LC) plasmonic metasurface integrated system is developed and studied. It is specifically used to demonstrate electrically switchable plasmonic-metasurface-based color tags. The active tags utilize the ability to rotate the polarization of incident light, by application of an external electric field on twisted nematic liquid crystal configuration. Combined with the wavelength and polarization-selective response of the metasurface, it allows to obtain electrically controlled transmission colors potentially spanning the entire visible spectrum. It is experimentally demonstrated that the dynamic wavelength shift in the devices is greater than 100 nm at a low driving voltage varying from 0 to 5 V. These experimental results indicate the potential of active LC-plasmonic metasurface platforms to realize the next-generation dynamic optical devices.

Original languageEnglish
Article number1901182
JournalAdvanced Optical Materials
Issue number7
StatePublished - 1 Apr 2020


  • liquid crystals
  • localized surface plasmons
  • plasmonic metasurfaces
  • tunable color devices

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics


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