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Article: Raman enhancement factor of a single tunable nanoplasmonic resonator

TitleRaman enhancement factor of a single tunable nanoplasmonic resonator
Authors
Issue Date2006
Citation
Journal of Physical Chemistry B, 2006, v. 110, n. 9, p. 3964-3968 How to Cite?
AbstractWe have developed a novel technique to precisely determine the Raman enhancement factor in single nanoplasmonic resonators (TNPRs). TNPRs are lithographically defined metallodielectric nanoparticles composed of two silver disks stacked vertically, separated by a silica layer. At resonance, the local electromagnetic fields are enhanced at the TNPR surface, making it an ideal surface-enhanced Raman scattering (SERS) active substrate. The ability to control the dimensions of the metallic and dielectric layers offers the unique advantage of fine-tuning the plasmon resonance frequency to maximize the enhancement of the Raman signal. Furthermore, by selective shielding of the outer surface of the metallic structure, the efficiency can be further enhanced by guiding the molecular assembly to the locations that exhibit strong electromagnetic fields. We experimentally demonstrate SERS enhancement factors of (6.1 ± 0.3) × 1010, with the highest enhancement factor being achieved by using an individual nanoparticle. By using nanofabrication techniques, we eliminate the issues such as large size variations, cluster aggregation, and interparticle effects common in preparing SERS substrates using conventional chemical synthesis or batch fabrication methods. TNPRs produce very controllable and repeatable SERS signals at the desired locations and, thus, make an ideal candidate for device integration. © 2006 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/256920
ISSN
2017 Impact Factor: 3.146
2015 SCImago Journal Rankings: 1.414
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorSu, Kai Hung-
dc.contributor.authorDurant, Stéphane-
dc.contributor.authorSteele, Jennifer M.-
dc.contributor.authorXiong, Yi-
dc.contributor.authorSun, Cheng-
dc.contributor.authorZhang, Xiang-
dc.date.accessioned2018-07-24T08:58:20Z-
dc.date.available2018-07-24T08:58:20Z-
dc.date.issued2006-
dc.identifier.citationJournal of Physical Chemistry B, 2006, v. 110, n. 9, p. 3964-3968-
dc.identifier.issn1520-6106-
dc.identifier.urihttp://hdl.handle.net/10722/256920-
dc.description.abstractWe have developed a novel technique to precisely determine the Raman enhancement factor in single nanoplasmonic resonators (TNPRs). TNPRs are lithographically defined metallodielectric nanoparticles composed of two silver disks stacked vertically, separated by a silica layer. At resonance, the local electromagnetic fields are enhanced at the TNPR surface, making it an ideal surface-enhanced Raman scattering (SERS) active substrate. The ability to control the dimensions of the metallic and dielectric layers offers the unique advantage of fine-tuning the plasmon resonance frequency to maximize the enhancement of the Raman signal. Furthermore, by selective shielding of the outer surface of the metallic structure, the efficiency can be further enhanced by guiding the molecular assembly to the locations that exhibit strong electromagnetic fields. We experimentally demonstrate SERS enhancement factors of (6.1 ± 0.3) × 1010, with the highest enhancement factor being achieved by using an individual nanoparticle. By using nanofabrication techniques, we eliminate the issues such as large size variations, cluster aggregation, and interparticle effects common in preparing SERS substrates using conventional chemical synthesis or batch fabrication methods. TNPRs produce very controllable and repeatable SERS signals at the desired locations and, thus, make an ideal candidate for device integration. © 2006 American Chemical Society.-
dc.languageeng-
dc.relation.ispartofJournal of Physical Chemistry B-
dc.titleRaman enhancement factor of a single tunable nanoplasmonic resonator-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1021/jp055566u-
dc.identifier.scopuseid_2-s2.0-33645695128-
dc.identifier.volume110-
dc.identifier.issue9-
dc.identifier.spage3964-
dc.identifier.epage3968-
dc.identifier.isiWOS:000235944500023-

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