Tunable negative permeability in an isotropic dielectric composite

Qian Zhao, Bo Du, Lei Kang, Hongjie Zhao, Qin Xie, Bo Li, Xing Zhang, Ji Zhou, Longtu Li, Yonggang Meng

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    Abstract

    A tunable isotropic negative effective permeability is experimentally demonstrated in a three-dimensional (3D) dielectric composite consisting of dielectric ceramic cube arrays by temperature changing. It shows that a strong subwavelength magnetic resonance can be excited in dielectric cubes corresponding to the first Mie resonance mode and can be continuously and reversibly adjusted from 13.65 to 19.28 GHz with the temperature changing from -15 to 35 °C. Accordingly, negative permeability can be performed in the frequency range of about 6 GHz by adjusting the temperature. It provides a convenient route to design adaptive metamaterials and 3D invisible cloak.

    Original languageEnglish (US)
    Article number051106
    JournalApplied Physics Letters
    Volume92
    Issue number5
    DOIs
    StatePublished - Feb 15 2008

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy (miscellaneous)

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  • Cite this

    Zhao, Q., Du, B., Kang, L., Zhao, H., Xie, Q., Li, B., Zhang, X., Zhou, J., Li, L., & Meng, Y. (2008). Tunable negative permeability in an isotropic dielectric composite. Applied Physics Letters, 92(5), [051106]. https://doi.org/10.1063/1.2841811