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Amplification of surface-enhanced Raman scattering due to substrate-mediated localized surface plasmons in gold nanodimers
Yue, Weisheng; Wang, Zhihong2; Whittaker, John; Lopez-royo, Francisco; Yang, Yang3; Zayats, Anatoly V.
Source PublicationJOURNAL OF MATERIALS CHEMISTRY C
Volume5Issue:16Pages:4075-4084
2017
Language英语
ISSN2050-7526
AbstractSurface-enhanced Raman scattering (SERS) is ubiquitous in chemical and biochemical sensing, imaging and identification. Maximizing the SERS enhancement is a continuous effort focused on the design of appropriate SERS substrates. Here we show that a 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 nanodimer antenna arrays, over 10-fold increase in the SERS enhancement is demonstrated. Triangular, rectangle and disc dimers were studied, with the bowtie antenna providing the 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 the SERS enhancement in designer SERS substrates.
KeywordSPECTROSCOPY NANOPARTICLES RESONANCE ARRAYS FILMS ASSEMBLIES NANOHOLE ANTENNAS SIZE NM
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/8825
Collection微细加工光学技术国家重点实验室(开放室)
Affiliation1.Chinese Acad Sci, Inst Opt & Elect, POB 350, Chengdu 610209, Peoples R China
2.Univ Manchester, Natl Graphene Inst, Oxford Rd, Manchester M13 9PL, Lancs, England
3.King Abdullah Univ Sci & Technol, Adv Nanofabricat & Thin Film Core Lab, Thuwal 239556900, Saudi Arabia
4.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China
5.Zayats, Anatoly V.] Kings Coll London, Dept Phys, London WC2R 2LS, England
Recommended Citation
GB/T 7714
Yue, Weisheng,Wang, Zhihong,Whittaker, John,et al. Amplification of surface-enhanced Raman scattering due to substrate-mediated localized surface plasmons in gold nanodimers[J]. JOURNAL OF MATERIALS CHEMISTRY C,2017,5(16):4075-4084.
APA Yue, Weisheng,Wang, Zhihong,Whittaker, John,Lopez-royo, Francisco,Yang, Yang,&Zayats, Anatoly V..(2017).Amplification of surface-enhanced Raman scattering due to substrate-mediated localized surface plasmons in gold nanodimers.JOURNAL OF MATERIALS CHEMISTRY C,5(16),4075-4084.
MLA Yue, Weisheng,et al."Amplification of surface-enhanced Raman scattering due to substrate-mediated localized surface plasmons in gold nanodimers".JOURNAL OF MATERIALS CHEMISTRY C 5.16(2017):4075-4084.
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