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Article: Symmetry breaking and optical negative index of closed nanorings

TitleSymmetry breaking and optical negative index of closed nanorings
Authors
Issue Date2012
Citation
Nature Communications, 2012, v. 3 How to Cite?
AbstractMetamaterials have extraordinary abilities, such as imaging beyond the diffraction limit and invisibility. Many metamaterials are based on split-ring structures, however, like atomic orbital currents, it has long been believed that closed rings cannot produce negative refractive index. Here we report a low-loss and polarization-independent negative-index metamaterial made solely of closed metallic nanorings. Using symmetry breaking that negatively couples the discrete nanorings, we measured negative phase delay in our composite 'chess metamaterial'. The formation of an ultra-broad Fano-resonance-induced optical negative-index band, spanning wavelengths from 1.3 to 2.3 μm, is experimentally observed in this structure. This discrete and mono-particle negative-index approach opens exciting avenues towards symmetry-controlled topological nanophotonics with on-demand linear and nonlinear responses. © 2012 Macmillan Publishers Limited. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/257144

 

DC FieldValueLanguage
dc.contributor.authorKanté, Boubacar-
dc.contributor.authorPark, Yong Shik-
dc.contributor.authorO'Brien, Kevin-
dc.contributor.authorShuldman, Daniel-
dc.contributor.authorLanzillotti-Kimura, Norberto D.-
dc.contributor.authorJing Wong, Zi-
dc.contributor.authorYin, Xiaobo-
dc.contributor.authorZhang, Xiang-
dc.date.accessioned2018-07-24T08:58:58Z-
dc.date.available2018-07-24T08:58:58Z-
dc.date.issued2012-
dc.identifier.citationNature Communications, 2012, v. 3-
dc.identifier.urihttp://hdl.handle.net/10722/257144-
dc.description.abstractMetamaterials have extraordinary abilities, such as imaging beyond the diffraction limit and invisibility. Many metamaterials are based on split-ring structures, however, like atomic orbital currents, it has long been believed that closed rings cannot produce negative refractive index. Here we report a low-loss and polarization-independent negative-index metamaterial made solely of closed metallic nanorings. Using symmetry breaking that negatively couples the discrete nanorings, we measured negative phase delay in our composite 'chess metamaterial'. The formation of an ultra-broad Fano-resonance-induced optical negative-index band, spanning wavelengths from 1.3 to 2.3 μm, is experimentally observed in this structure. This discrete and mono-particle negative-index approach opens exciting avenues towards symmetry-controlled topological nanophotonics with on-demand linear and nonlinear responses. © 2012 Macmillan Publishers Limited. All rights reserved.-
dc.languageeng-
dc.relation.ispartofNature Communications-
dc.titleSymmetry breaking and optical negative index of closed nanorings-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1038/ncomms2161-
dc.identifier.scopuseid_2-s2.0-84870815703-
dc.identifier.volume3-
dc.identifier.spagenull-
dc.identifier.epagenull-
dc.identifier.eissn2041-1723-

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