Equal-potential interpretation of electrically induced resonances in metamaterials

Liang Peng; N. Asger Mortensen

doi:10.1088/1367-2630/13/5/053012

Equal-potential interpretation of electrically induced resonances in metamaterials

Liang Peng, N. Asger Mortensen

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Abstract

We propose a general description of electrically induced resonances (EIR) in metamaterials (MMs) comprising subwavelength unit cells. Based on classical electrodynamics, we found that EIR is governed by an equal-potential effect. Our theory accounts for the EIR phenomena and can give a renewed definition of the effective electric field and hence effective permittivity for MMs made of either dielectrics or metals as well as combinations thereof. The EIR, inherent to the periodic structures, may be the unifying origin of recently observed anomalous electromagnetic phenomena, e.g. the enhanced transmission, the suppressed transmission and the enhanced absorption by a variety of metal film structures in the terahertz range.

Original language	English
Journal	New Journal of Physics
Volume	13
Issue number	5
Pages (from-to)	053012
ISSN	1367-2630
DOIs	https://doi.org/10.1088/1367-2630/13/5/053012
Publication status	Published - 2011

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Third parties have the same rights to reuse articles in NJP as described in the Creative Commons Attribution-Non-Commercial-ShareAlike 3.0 license. These open-access rights allow third-party users to copy, distribute and display the published version of articles in NJP, and create derivative works, subject to appropriate attribution and non-commercial exploitation.

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N2 - We propose a general description of electrically induced resonances (EIR) in metamaterials (MMs) comprising subwavelength unit cells. Based on classical electrodynamics, we found that EIR is governed by an equal-potential effect. Our theory accounts for the EIR phenomena and can give a renewed definition of the effective electric field and hence effective permittivity for MMs made of either dielectrics or metals as well as combinations thereof. The EIR, inherent to the periodic structures, may be the unifying origin of recently observed anomalous electromagnetic phenomena, e.g. the enhanced transmission, the suppressed transmission and the enhanced absorption by a variety of metal film structures in the terahertz range.

AB - We propose a general description of electrically induced resonances (EIR) in metamaterials (MMs) comprising subwavelength unit cells. Based on classical electrodynamics, we found that EIR is governed by an equal-potential effect. Our theory accounts for the EIR phenomena and can give a renewed definition of the effective electric field and hence effective permittivity for MMs made of either dielectrics or metals as well as combinations thereof. The EIR, inherent to the periodic structures, may be the unifying origin of recently observed anomalous electromagnetic phenomena, e.g. the enhanced transmission, the suppressed transmission and the enhanced absorption by a variety of metal film structures in the terahertz range.

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JO - New Journal of Physics

JF - New Journal of Physics

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Equal-potential interpretation of electrically induced resonances in metamaterials

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