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Sensors 2015, 15(4), 9344-9359;

Sensing Based on Fano-Type Resonance Response of All-Dielectric Metamaterials

Department of Electrical and Computer Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, USA
Department of Physics, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, USA
Author to whom correspondence should be addressed.
Academic Editor: Vittorio M.N. Passaro
Received: 31 January 2015 / Revised: 17 March 2015 / Accepted: 15 April 2015 / Published: 21 April 2015
(This article belongs to the Special Issue Metamaterial-Inspired Sensors)
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A new sensing approach utilizing Mie resonances in metamaterial arrays composed of dielectric resonators is proposed. These arrays were found to exhibit specific, extremely high-Q factor (up to 15,000) resonances at frequencies corresponding to the lower edge of the array second transmission band. The observed resonances possessed with features typical for Fano resonances (FRs), which were initially revealed in atomic processes and recently detected in macro-structures, where they resulted from interference between local resonances and a continuum of background waves. Our studies demonstrate that frequencies and strength of Fano-type resonances in all-dielectric arrays are defined by interaction between local Mie resonances and Fabry-Perot oscillations of Bloch eigenmodes that makes possible controlling the resonance responses by changing array arrangements. The opportunity for obtaining high-Q responses in compact arrays is investigated and promising designs for sensing the dielectric properties of analytes in the ambient are proposed. View Full-Text
Keywords: Fano resonance; dielectric resonator; metamaterial Fano resonance; dielectric resonator; metamaterial

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Semouchkina, E.; Duan, R.; Semouchkin, G.; Pandey, R. Sensing Based on Fano-Type Resonance Response of All-Dielectric Metamaterials. Sensors 2015, 15, 9344-9359.

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