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: Contribution to journalArticlepeer-review

    62 Scopus citations

    Abstract

    We report on the tunability, by a magnetic field, of a negative permeability metamaterial consisting of stacked arrays of broadside-coupled split ring resonators infiltrated with liquid crystals (LCs). The resonant frequency shift was numerically assessed by a rigorous anisotropic analysis of the reorientation of LC molecules. Experiments were carried out with a prototype designed and fabricated for X -band operation and infiltrated with a nematic compound with optical birefringence Δn=0.18. Scattering parameters vectorial analysis shows a good agreement between the resonant frequency shifts predicted under anisotropic conditions and those measured under static magnetic control.

    Original languageEnglish (US)
    Article number193104
    JournalApplied Physics Letters
    Volume92
    Issue number19
    DOIs
    StatePublished - 2008

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy (miscellaneous)

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