Electrically tunable all-dielectric optical metasurfaces based on liquid crystals

We demonstrate electrical tuning of the spectral response of a Mie-resonant dielectric metasurface consisting of silicon nanodisks embedded into liquid crystals. We use the reorientation of nematic liquid crystals in a moderate applied electric field to alter the anisotropic permittivity tensor arou...

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Published inApplied physics letters Vol. 110; no. 7
Main Authors Komar, Andrei, Fang, Zheng, Bohn, Justus, Sautter, Jürgen, Decker, Manuel, Miroshnichenko, Andrey, Pertsch, Thomas, Brener, Igal, Kivshar, Yuri S., Staude, Isabelle, Neshev, Dragomir N.
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 13.02.2017
American Institute of Physics (AIP)
Subjects
Applied physics
Dielectrics
Electric potential
Holograms
Holography
Liquid crystals
MATERIALS SCIENCE
Metasurfaces
Nematic crystals
Spectral sensitivity
Tensors
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ISSN0003-6951
1077-3118
DOI10.1063/1.4976504

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Summary:We demonstrate electrical tuning of the spectral response of a Mie-resonant dielectric metasurface consisting of silicon nanodisks embedded into liquid crystals. We use the reorientation of nematic liquid crystals in a moderate applied electric field to alter the anisotropic permittivity tensor around the metasurface. By switching a control voltage “on” and “off,” we induce a large spectral shift of the metasurface resonances, resulting in an absolute transmission modulation of up to 75%. Our experimental demonstration of voltage control of dielectric metasurfaces paves the way for new types of electrically tunable metadevices, including dynamic displays and holograms.
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content type line 14
AC04-94AL85000
SAND-2017-2081J
USDOE National Nuclear Security Administration (NNSA)
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4976504