Amplification of Surface-Enhanced Raman Scattering Due to Substrate-Mediated Localized Surface Plasmons in Gold Nanodimers

Handle URI:
http://hdl.handle.net/10754/623067
Title:
Amplification of Surface-Enhanced Raman Scattering Due to Substrate-Mediated Localized Surface Plasmons in Gold Nanodimers
Authors:
Yue, Weisheng; Wang, Zhihong; Whittaker, John; Lopez-royo, Francisco; Yang, Yang; Zayats, Anatoly
Abstract:
Surface-enhanced Raman scattering (SERS) is ubiquitous in chemical and biochemical sensing, imaging and identification. Maximizing SERS enhancement is a continuous effort focused on the design of appropriate SERS substrates. Here we show that significant improvement in a SERS signal can be achieved with substrates combining localized surface plasmon resonances and a nonresonant plasmonic substrate. By introducing a continuous gold (Au) film underneath Au nanodimers antenna arrays, an over 10-fold increase in SERS enhancement is demonstrated. Triangular, rectangle and disc dimers were studied, with bowtie antenna providing highest SERS enhancement. Simulations of electromagnetic field distributions of the Au nanodimers on the Au film support the observed enhancement dependences. The hybridization of localized plasmonic modes with the image modes in a metal film provides a straightforward way to improve SERS enhancement in designer SERS substrate.
KAUST Department:
Advanced Nanofabrication and Thin Film Core Lab
Citation:
Yue W, Wang Z, Whittaker J, Lopez-royo F, Yang Y, et al. (2017) Amplification of Surface-Enhanced Raman Scattering Due to Substrate-Mediated Localized Surface Plasmons in Gold Nanodimers. J Mater Chem C. Available: http://dx.doi.org/10.1039/c7tc00667e.
Publisher:
Royal Society of Chemistry (RSC)
Journal:
J. Mater. Chem. C
Issue Date:
28-Mar-2017
DOI:
10.1039/c7tc00667e
Type:
Article
ISSN:
2050-7526; 2050-7534
Sponsors:
The authors would like to thank Dr. Francisco Rodriguez Fortuno (King’s College London) for the discussions of the numerical simulations.
Additional Links:
http://pubs.rsc.org/en/Content/ArticleLanding/2017/TC/C7TC00667E#!divAbstract
Appears in Collections:
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab

Full metadata record

DC FieldValue Language
dc.contributor.authorYue, Weishengen
dc.contributor.authorWang, Zhihongen
dc.contributor.authorWhittaker, Johnen
dc.contributor.authorLopez-royo, Franciscoen
dc.contributor.authorYang, Yangen
dc.contributor.authorZayats, Anatolyen
dc.date.accessioned2017-04-10T07:49:49Z-
dc.date.available2017-04-10T07:49:49Z-
dc.date.issued2017-03-28en
dc.identifier.citationYue W, Wang Z, Whittaker J, Lopez-royo F, Yang Y, et al. (2017) Amplification of Surface-Enhanced Raman Scattering Due to Substrate-Mediated Localized Surface Plasmons in Gold Nanodimers. J Mater Chem C. Available: http://dx.doi.org/10.1039/c7tc00667e.en
dc.identifier.issn2050-7526en
dc.identifier.issn2050-7534en
dc.identifier.doi10.1039/c7tc00667een
dc.identifier.urihttp://hdl.handle.net/10754/623067-
dc.description.abstractSurface-enhanced Raman scattering (SERS) is ubiquitous in chemical and biochemical sensing, imaging and identification. Maximizing SERS enhancement is a continuous effort focused on the design of appropriate SERS substrates. Here we show that significant improvement in a SERS signal can be achieved with substrates combining localized surface plasmon resonances and a nonresonant plasmonic substrate. By introducing a continuous gold (Au) film underneath Au nanodimers antenna arrays, an over 10-fold increase in SERS enhancement is demonstrated. Triangular, rectangle and disc dimers were studied, with bowtie antenna providing highest SERS enhancement. Simulations of electromagnetic field distributions of the Au nanodimers on the Au film support the observed enhancement dependences. The hybridization of localized plasmonic modes with the image modes in a metal film provides a straightforward way to improve SERS enhancement in designer SERS substrate.en
dc.description.sponsorshipThe authors would like to thank Dr. Francisco Rodriguez Fortuno (King’s College London) for the discussions of the numerical simulations.en
dc.publisherRoyal Society of Chemistry (RSC)en
dc.relation.urlhttp://pubs.rsc.org/en/Content/ArticleLanding/2017/TC/C7TC00667E#!divAbstracten
dc.rightsArchived with thanks to J. Mater. Chem. Cen
dc.subjectSurface-enhanced Raman scattering (SERS)en
dc.subjectnanoantennasen
dc.subjectlocalized surface plasmon (LSP)en
dc.subjectelectron-beam lithographyen
dc.titleAmplification of Surface-Enhanced Raman Scattering Due to Substrate-Mediated Localized Surface Plasmons in Gold Nanodimersen
dc.typeArticleen
dc.contributor.departmentAdvanced Nanofabrication and Thin Film Core Laben
dc.identifier.journalJ. Mater. Chem. Cen
dc.eprint.versionPost-printen
dc.contributor.institutionInstitute of Optics and Electronics, Chinese Academy of Sciences, P.O. Box 350, Chengdu 610209, P. R. Chinaen
dc.contributor.institutionNational Graphene Institute, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdomen
dc.contributor.institutionBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, Chinaen
dc.contributor.institutionDepartment of Physics, King’s College London, Strand, London WC2R 2LS, United Kingdomen
kaust.authorWang, Zhihongen
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