Abnormal refraction of microwave in ferrite/wire metamaterials

Hongjie Zhao, Bo Li, Ji Zhou, Lei Kang, Qian Zhao, Weibin Li

    Research output: Contribution to journalArticle

    8 Citations (Scopus)

    Abstract

    We report the experimentally observed abnormal refraction in metamaterials (MMs) consisting of ferrite rods and metallic wires with two kinds of configurations. Negative refraction (NR) and positive refraction (PR) are demonstrated in an MM constructed with parallel-arranged rods and wires. The frequencies of both NR and PR can be adjusted dynamically and together by an applied magnetic field and the PR occurs at frequencies slightly lower than that of the NR. The NR is attributed to simultaneously negative effective permittivity and permeability, and the PR is resulted from positive effective permittivity and permeability with the positive effective permittivity originating from electromagnetic coupling between the closest rod and wire. By making the rod cross the wire to reduce the coupling, we observed sole NR in an MM consisting of the cross-arranged rods and wires. Theoretical analysis explained qualitatively the abnormal refraction behaviors of microwave for the two kinds of MMs and it is supported by the retrieved effective parameters and field distributions.

    Original languageEnglish (US)
    Pages (from-to)15679-15689
    Number of pages11
    JournalOptics Express
    Volume19
    Issue number17
    DOIs
    StatePublished - Aug 15 2011

    Fingerprint

    refraction
    ferrites
    wire
    microwaves
    rods
    permittivity
    permeability
    electromagnetic coupling
    low frequencies
    configurations
    magnetic fields

    All Science Journal Classification (ASJC) codes

    • Atomic and Molecular Physics, and Optics

    Cite this

    Zhao, Hongjie ; Li, Bo ; Zhou, Ji ; Kang, Lei ; Zhao, Qian ; Li, Weibin. / Abnormal refraction of microwave in ferrite/wire metamaterials. In: Optics Express. 2011 ; Vol. 19, No. 17. pp. 15679-15689.
    @article{e294dafd45d6413eb20a70ac564033e9,
    title = "Abnormal refraction of microwave in ferrite/wire metamaterials",
    abstract = "We report the experimentally observed abnormal refraction in metamaterials (MMs) consisting of ferrite rods and metallic wires with two kinds of configurations. Negative refraction (NR) and positive refraction (PR) are demonstrated in an MM constructed with parallel-arranged rods and wires. The frequencies of both NR and PR can be adjusted dynamically and together by an applied magnetic field and the PR occurs at frequencies slightly lower than that of the NR. The NR is attributed to simultaneously negative effective permittivity and permeability, and the PR is resulted from positive effective permittivity and permeability with the positive effective permittivity originating from electromagnetic coupling between the closest rod and wire. By making the rod cross the wire to reduce the coupling, we observed sole NR in an MM consisting of the cross-arranged rods and wires. Theoretical analysis explained qualitatively the abnormal refraction behaviors of microwave for the two kinds of MMs and it is supported by the retrieved effective parameters and field distributions.",
    author = "Hongjie Zhao and Bo Li and Ji Zhou and Lei Kang and Qian Zhao and Weibin Li",
    year = "2011",
    month = "8",
    day = "15",
    doi = "10.1364/OE.19.015679",
    language = "English (US)",
    volume = "19",
    pages = "15679--15689",
    journal = "Optics Express",
    issn = "1094-4087",
    publisher = "The Optical Society",
    number = "17",

    }

    Zhao, H, Li, B, Zhou, J, Kang, L, Zhao, Q & Li, W 2011, 'Abnormal refraction of microwave in ferrite/wire metamaterials', Optics Express, vol. 19, no. 17, pp. 15679-15689. https://doi.org/10.1364/OE.19.015679

    Abnormal refraction of microwave in ferrite/wire metamaterials. / Zhao, Hongjie; Li, Bo; Zhou, Ji; Kang, Lei; Zhao, Qian; Li, Weibin.

    In: Optics Express, Vol. 19, No. 17, 15.08.2011, p. 15679-15689.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Abnormal refraction of microwave in ferrite/wire metamaterials

    AU - Zhao, Hongjie

    AU - Li, Bo

    AU - Zhou, Ji

    AU - Kang, Lei

    AU - Zhao, Qian

    AU - Li, Weibin

    PY - 2011/8/15

    Y1 - 2011/8/15

    N2 - We report the experimentally observed abnormal refraction in metamaterials (MMs) consisting of ferrite rods and metallic wires with two kinds of configurations. Negative refraction (NR) and positive refraction (PR) are demonstrated in an MM constructed with parallel-arranged rods and wires. The frequencies of both NR and PR can be adjusted dynamically and together by an applied magnetic field and the PR occurs at frequencies slightly lower than that of the NR. The NR is attributed to simultaneously negative effective permittivity and permeability, and the PR is resulted from positive effective permittivity and permeability with the positive effective permittivity originating from electromagnetic coupling between the closest rod and wire. By making the rod cross the wire to reduce the coupling, we observed sole NR in an MM consisting of the cross-arranged rods and wires. Theoretical analysis explained qualitatively the abnormal refraction behaviors of microwave for the two kinds of MMs and it is supported by the retrieved effective parameters and field distributions.

    AB - We report the experimentally observed abnormal refraction in metamaterials (MMs) consisting of ferrite rods and metallic wires with two kinds of configurations. Negative refraction (NR) and positive refraction (PR) are demonstrated in an MM constructed with parallel-arranged rods and wires. The frequencies of both NR and PR can be adjusted dynamically and together by an applied magnetic field and the PR occurs at frequencies slightly lower than that of the NR. The NR is attributed to simultaneously negative effective permittivity and permeability, and the PR is resulted from positive effective permittivity and permeability with the positive effective permittivity originating from electromagnetic coupling between the closest rod and wire. By making the rod cross the wire to reduce the coupling, we observed sole NR in an MM consisting of the cross-arranged rods and wires. Theoretical analysis explained qualitatively the abnormal refraction behaviors of microwave for the two kinds of MMs and it is supported by the retrieved effective parameters and field distributions.

    UR - http://www.scopus.com/inward/record.url?scp=80051718889&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=80051718889&partnerID=8YFLogxK

    U2 - 10.1364/OE.19.015679

    DO - 10.1364/OE.19.015679

    M3 - Article

    C2 - 21934929

    AN - SCOPUS:80051718889

    VL - 19

    SP - 15679

    EP - 15689

    JO - Optics Express

    JF - Optics Express

    SN - 1094-4087

    IS - 17

    ER -