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    Tunable metasurfaces with nematic liquid crystals

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    Author
    Yilmaz, Nazmi
    Giden, Ibrahim Halil
    Bagci, Fehim Taha
    Ozdemir, Aytekin
    Kurt, Hamza
    Takashima, Yuzuru
    Ozer, Ahmet
    Affiliation
    Univ Arizona, Coll Opt Sci
    Issue Date
    2018
    Keywords
    metasurfaces
    liquid crystals
    nanostructured materials
    optoelectronic devices
    
    Metadata
    Show full item record
    Publisher
    SPIE-INT SOC OPTICAL ENGINEERING
    Citation
    Nazmi Yilmaz, Nazmi Yilmaz, Fehim T. Bagci, Fehim T. Bagci, Aytekin Ozdemir, Aytekin Ozdemir, Ibrahim H. Giden, Ibrahim H. Giden, Ahmet Ozer, Ahmet Ozer, Yuzuru Takashima, Yuzuru Takashima, Hamza Kurt, Hamza Kurt, } "Tunable metasurfaces with liquid crystals", Proc. SPIE 10671, Metamaterials XI, 106712N (7 May 2018); doi: 10.1117/12.2307515; https://doi.org/10.1117/12.2307515
    Journal
    METAMATERIALS XI
    Rights
    © 2018 SPIE.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    Intensive researches in the area of metasurfaces have provided a new insight to obtain flat and compact optical systems. In this letter, we numerically show that, highly efficient tunable beam steering effect in transmission mode is achieved at wavelength lambda = 550 nm using nematic liquid crystals (LCs) infiltrated into double sided metasurfaces. Using the electro-optical feature of LCs, the phase profile of the metasurfaces is controlled and thus, the transmitted beam is deflected within the range from -15 degrees to 15 degrees steering angles. Transparent dielectric materials are used in the designed structure that provides highly efficient beam-steering; the corresponding transmission efficiency is above 83% in the visible spectrum, which is another superiority of the proposed hybrid tunable structure over present plasmonic/metamaterial approaches. The designed metasurface still preserves its beam deflection property covering the visible spectrum and hence, such hybrid structure can be implemented for broadband electro-optically controllable beam steering applications.
    ISSN
    9781510618688
    9781510618695
    DOI
    10.1117/12.2307515
    Version
    Final published version
    Sponsors
    Turkish Academy of Science
    Additional Links
    https://spiedigitallibrary.org/conference-proceedings-of-spie/10671/2307515/Tunable-metasurfaces-with-nematic-liquid-crystals/10.1117/12.2307515.full
    ae974a485f413a2113503eed53cd6c53
    10.1117/12.2307515
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