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Magnetic hot spots in closely spaced thick gold nanorings

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Magnetic hot spots in closely spaced thick gold nanorings

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dc.contributor.author Lorente Crespo, María es_ES
dc.contributor.author Wang, Li es_ES
dc.contributor.author Ortuño Molinero, Rubén es_ES
dc.contributor.author García Meca, Carlos es_ES
dc.contributor.author Ekinci, Yasin es_ES
dc.contributor.author Martínez Abietar, Alejandro José es_ES
dc.date.accessioned 2015-11-05T12:55:41Z
dc.date.issued 2013-06
dc.identifier.issn 1530-6984
dc.identifier.uri http://hdl.handle.net/10251/57086
dc.description This document is the Accepted Manuscript version of a Published Work that appeared in final form in Nano Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/page/policy/articlesonrequest/index.html es_ES
dc.description.abstract Ligh-matter interaction at optical frequencies is mostly mediated by the electric component of the electromagnetic field, with the magnetic component usually being considered negligible. Recently, it has been shown that properly engineered metallic nanostructures can provide a magnetic response at optical frequencies originated from real or virtual flows of electric current in the structure. In this work, we demonstrate a magnetic plasmonic mode which emerges in closely spaced thick gold nanorings. The plasmonic resonance obtains a magnetic dipole character by sufficiently increasing the height of the nanorings. Numerical simulations show that a virtual current loop appears at resonance for sufficiently thick nanorings, resulting in a strong concentration of the magnetic field in the gap region (magnetic hot spot). We find that there is an optimum thickness that provides the maximum magnetic intensity enhancement (over 200-fold enhancement) and give an explanation of this observation. This strong magnetic resonance, observed both experimentally and theoretically, can be used to build new metamaterials and resonant loop nanoantennas at optical frequencies. es_ES
dc.description.sponsorship This work has been supported by Spanish Government and European Union (EU) funds under contracts CSD2008-00066 and TEC2011-28664-C02-02 and Universitat Politecnica de Valencia (program INNOVA 2011). The authors extend special thanks to Mr. J. Ross Aitken for his contribution to this work. en_EN
dc.language Inglés es_ES
dc.publisher American Chemical Society es_ES
dc.relation Spanish Government es_ES
dc.relation European Union (EU) CSD2008-00066 es_ES
dc.relation European Union (EU) TEC2011-28664-C02-02 es_ES
dc.relation Universitat Politècnica de València (program INNOVA 2011) es_ES
dc.relation.ispartof Nano Letters es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Plamonics es_ES
dc.subject Optical Magnetism es_ES
dc.subject Gold nanorings es_ES
dc.subject.classification TEORIA DE LA SEÑAL Y COMUNICACIONES es_ES
dc.title Magnetic hot spots in closely spaced thick gold nanorings es_ES
dc.type Artículo es_ES
dc.embargo.lift 10000-01-01
dc.embargo.terms forever es_ES
dc.identifier.doi 10.1021/nl400798s
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario de Tecnología Nanofotónica - Institut Universitari de Tecnologia Nanofotònica es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions es_ES
dc.description.bibliographicCitation Lorente Crespo, M.; Wang, L.; Ortuño Molinero, R.; García Meca, C.; Ekinci, Y.; Martínez Abietar, AJ. (2013). Magnetic hot spots in closely spaced thick gold nanorings. Nano Letters. 13(6):2654-2661. doi:10.1021/nl400798s es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://dx.doi.org/10.1021/nl400798s es_ES
dc.description.upvformatpinicio 2654 es_ES
dc.description.upvformatpfin 2661 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 13 es_ES
dc.description.issue 6 es_ES
dc.relation.senia 248704 es_ES
dc.identifier.eissn 1530-6992


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