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Article: Robust plasmonic hot-spots in a metamaterial lattice for enhanced sensitivity of infrared molecular detection

TitleRobust plasmonic hot-spots in a metamaterial lattice for enhanced sensitivity of infrared molecular detection
Authors
Issue Date2017
PublisherAIP Publishing LLC. The Journal's web site is located at http://apl.aip.org/
Citation
Applied Physics Letters, 2017, v. 111 n. 24, article no. 243106 How to Cite?
Abstract© 2017 Author(s). High-density and long-lived plasmonic hot-spots are an ideal system for high-sensitive surface-enhanced infrared absorption (SEIRA), but these conditions are usually incompatible due to unwanted near-field coupling between the adjacent unit structures. Here, by fully controlling plasmonic interference in a metamaterial lattice, we experimentally demonstrate densely packed long-lived quadrupole plasmons for high-sensitive SEIRA. The metamaterial consists of a strongly coupled array of super- and sub-radiant plasmonic elements to exhibit an electromagnetic transparency mode at 1730 cm-1, which spectrally overlaps with the C=O vibrational mode. In the SEIRA measurement, the C=O mode of poly(methyl methacrylate) molecules is clearly observed as a distinct dip within a transmission peak of the metamaterial. The corresponding numerical simulations reveal that constructive interference uniformly forms coherent quadrupole plasmons over the metamaterial lattice, leading to a stronger molecular signal from the system. Our metamaterial approach provides a robust way to construct ideal hot-spots over the sample, paving the way toward a reliable sensing platform of advanced infrared inspection technologies.
Persistent Identifierhttp://hdl.handle.net/10722/256833
ISSN
2020 Impact Factor: 3.791
2015 SCImago Journal Rankings: 1.105
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorIshikawa, Atsushi-
dc.contributor.authorHara, Shuhei-
dc.contributor.authorTanaka, Takuo-
dc.contributor.authorZhang, Xiang-
dc.contributor.authorTsuruta, Kenji-
dc.date.accessioned2018-07-24T08:58:03Z-
dc.date.available2018-07-24T08:58:03Z-
dc.date.issued2017-
dc.identifier.citationApplied Physics Letters, 2017, v. 111 n. 24, article no. 243106-
dc.identifier.issn0003-6951-
dc.identifier.urihttp://hdl.handle.net/10722/256833-
dc.description.abstract© 2017 Author(s). High-density and long-lived plasmonic hot-spots are an ideal system for high-sensitive surface-enhanced infrared absorption (SEIRA), but these conditions are usually incompatible due to unwanted near-field coupling between the adjacent unit structures. Here, by fully controlling plasmonic interference in a metamaterial lattice, we experimentally demonstrate densely packed long-lived quadrupole plasmons for high-sensitive SEIRA. The metamaterial consists of a strongly coupled array of super- and sub-radiant plasmonic elements to exhibit an electromagnetic transparency mode at 1730 cm-1, which spectrally overlaps with the C=O vibrational mode. In the SEIRA measurement, the C=O mode of poly(methyl methacrylate) molecules is clearly observed as a distinct dip within a transmission peak of the metamaterial. The corresponding numerical simulations reveal that constructive interference uniformly forms coherent quadrupole plasmons over the metamaterial lattice, leading to a stronger molecular signal from the system. Our metamaterial approach provides a robust way to construct ideal hot-spots over the sample, paving the way toward a reliable sensing platform of advanced infrared inspection technologies.-
dc.languageeng-
dc.publisherAIP Publishing LLC. The Journal's web site is located at http://apl.aip.org/-
dc.relation.ispartofApplied Physics Letters-
dc.titleRobust plasmonic hot-spots in a metamaterial lattice for enhanced sensitivity of infrared molecular detection-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1063/1.5004703-
dc.identifier.scopuseid_2-s2.0-85038440827-
dc.identifier.volume111-
dc.identifier.issue24-
dc.identifier.spagearticle no. 243106-
dc.identifier.epagearticle no. 243106-
dc.identifier.isiWOS:000418098900036-
dc.identifier.issnl0003-6951-

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