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Large Quality Factor in Sheet Metamaterials Made from Dark Dielectric Meta-atoms

TitleLarge Quality Factor in Sheet Metamaterials Made from Dark Dielectric Meta-atoms
Publication TypeJournal Article
Year of Publication2014
AuthorsJain, A, Tassin, P, Koschny, T, Soukoulis, CM
JournalPhysical Review Letters
Volume112
Pagination117403
Date Published03
Type of ArticleArticle
ISBN Number0031-9007
Accession NumberWOS:000333088200011
Keywordsindex, negative permittivity, permeability, resonators
Abstract

Metamaterials-or artificial electromagnetic materials-can create media with properties unattainable in nature, but mitigating dissipation is a key challenge for their further development. Here, we demonstrate a low-loss metamaterial by exploiting dark bound states in dielectric inclusions coupled to the external waves by small nonresonant metallic antennas. We experimentally demonstrate a dispersion-engineered metamaterial based on a meta-atom made from alumina, and we show that its resonance has a much larger quality factor than metal-based meta-atoms. Finally, we show that our dielectric meta-atom can be used to create sheet metamaterials with negative permittivity or permeability.

DOI10.1103/PhysRevLett.112.117403
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Metamaterials