Electrically tunable negative permeability metamaterials based on nematic liquid crystals

Qian Zhao, Lei Kang, Bo Du, Bo Li, Ji Zhou, Hong Tang, Xiao Liang, Baizhe Zhang

    Research output: Contribution to journalArticle

    222 Scopus citations

    Abstract

    An electrically tunable negative permeability metamaterial consisting of a periodic array of split ring resonators infiltrated with nematic liquid crystals is demonstrated. It shows that the transmitted resonance dip of the metamaterial can be continuously and reversibly adjusted by an applied electric field, and the maximum shift is about 210 MHz with respect to the resonance frequency around 11.08 GHz. Numerical simulation shows that the permeability is negative near the resonance frequency, and the frequency range with negative permeability can be dynamically adjusted and widened by about 200 MHz by the electric field. It provides a convenient means to design adaptive metamaterials.

    Original languageEnglish (US)
    Article number011112
    JournalApplied Physics Letters
    Volume90
    Issue number1
    DOIs
    StatePublished - Jan 15 2007

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy (miscellaneous)

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