Magnetic control of negative permeability metamaterials based on Liquid Crystals

Fuli Zhang, Qian Zhao, Lei Kang, Davy P. Gaillot, Xiaopeng Zhao, Ji Zhou, Didier Lippens

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    6 Scopus citations

    Abstract

    We demonstrate numerically and experimentally a magnetically tunable negative permeability metamaterial consisting of an array of broadside coupled split ring resonators infiltrated with Liquid Crystals (LCs). We stress by a comparative analysis of the LC influence on the resonant frequency under isotropic and anisotropic conditions, the specificities of the tunability of the electromagnetic properties via the substrate permittivity tensor. Experiments were carried out on the basis of a prototype designed and fabricated for X-band operation and infiltrated with a nematic LC with birefringence Δn=0.18. Scattering parameters analysis shows a resonant frequency shift of 0. 3 GHz obtained by reorienting the layered LC by means of permanent magnets; these results being in good agreement with the anisotropic theoretical approach.

    Original languageEnglish (US)
    Title of host publicationProceedings of the 38th European Microwave Conference, EuMC 2008
    Pages801-804
    Number of pages4
    DOIs
    StatePublished - Dec 1 2008
    Event38th European Microwave Conference, EuMC 2008 - Amsterdam, Netherlands
    Duration: Oct 27 2008Oct 31 2008

    Publication series

    NameProceedings of the 38th European Microwave Conference, EuMC 2008

    Other

    Other38th European Microwave Conference, EuMC 2008
    CountryNetherlands
    CityAmsterdam
    Period10/27/0810/31/08

    All Science Journal Classification (ASJC) codes

    • Electrical and Electronic Engineering

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