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PIER PIER B PIER C PIER M PIER Letters
2006-08-29
Novel Broadband Terahertz Negative Refractive Index Metamaterials: Analysis and Experiment
By
Nantakan Wongkasem,

    Dr. Nantakan Wongkasem

    Department of Electrical Engineering

    Khon Kaen University

    Thailand

    Homepage

Alkim Akyurtlu,

    Dr. Alkim Akyurtlu

    Department of Electrical and Computer Engineering

    University of Massachusetts

    USA

    Homepage

Jin Li,

    Dr. Jin Li

    Department of Physics and Applied Physics

    University of Massachusetts

    USA

    Homepage

Adam Tibolt,

    Dr. Adam Tibolt

    Department of Physics and Applied Physics

    University of Massachusetts

    USA

    Homepage

Zeng Kang,

    Dr. Zeng Kang

    Department of Electrical and Computer Engineering

    University of Massachusetts

    USA

    Homepage

William Goodhue

    Dr. William Goodhue

    Department of Physics and Applied Physics

    University of Massachusetts

    USA

    Homepage

, Vol. 64, 205-218, 2006
doi:10.2528/PIER06071104
Abstract
Broadband planar and non-planar negative refractive index (NRI) metamaterial (MTM) designs consisting of a periodically arranged split ring resonator and wire structures are developed in the terahertz (THz) frequency regime using the Finite-Difference Time- Domain (FDTD) method. The novel MTM designs generate a broad negative index of refraction (NIR) passband approximately two and a half times higher than those of the conventional SRR/wire structures, by using the same dimensions. Numerical simulations of wedgeand triangle-shaped metamaterials are used to prove the negative refractive index of the models. The fabricated MTMs exhibit passband characteristics which are in good agreement with the model results. The parametric studies of correlated factors further support these outcomes.
Citation
Nantakan Wongkasem, Alkim Akyurtlu, Jin Li, Adam Tibolt, Zeng Kang, and William Goodhue, "Novel Broadband Terahertz Negative Refractive Index Metamaterials: Analysis and Experiment," , Vol. 64, 205-218, 2006.
doi:10.2528/PIER06071104
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