Microwave and THz sensing using slab-pair-based metamaterials |
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| Authors: | G. Kenanakis N.-H. Shen Ch. Mavidis N. Katsarakis M. Kafesaki C.M. Soukoulis E.N. Economou |
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| Affiliation: | 1. Institute of Electronic Structure and Laser, Foundation for Research and Technology—Hellas, P.O. Box 1385, Vassilika Vouton, 711 10 Heraklion, Crete, Greece;2. Science Department, School of Applied Technology, Technological Educational Institute of Crete, 710 04 Heraklion, Crete, Greece;3. Ames Laboratory—USDOE, and Department of Physics and Astronomy, Iowa State University, Ames, IA 50011 USA;4. Department of Electrical Engineering, Stanford University, Stanford, CA 94395, USA;5. Department of Materials Science and Technology, University of Crete, 710 03 Heraklion, Crete, Greece |
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| Abstract: | In this work the sensing capability of an artificial magnetic metamaterial based on pairs of metal slabs is demonstrated, both theoretically and experimentally, in the microwave regime. The demonstration is based on transmission measurements and simulations monitoring the shift of the magnetic resonance frequency as one changes a thin dielectric layer placed between the slabs of the pairs. Strong dependence of the magnetic resonance frequency on both the permittivity and the thickness of the dielectric layer under detection was observed. The sensitivity to the dielectrics′ permittivity (ε) is larger for dielectrics of low ε values, which makes the approach suitable for sensing organic materials also in the THz regime. The capability of our approach for THz sensing is also demonstrated through simulations. |
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| Keywords: | Metamaterials Slab-pair design Microwaves Sensors |
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