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.
2017
发表期刊JOURNAL OF MATERIALS CHEMISTRY C
ISSN2050-7526
卷号5期号:16页码:4075-4084
摘要Surface-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.
关键词SPECTROSCOPY NANOPARTICLES RESONANCE ARRAYS FILMS ASSEMBLIES NANOHOLE ANTENNAS SIZE NM
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.ioe.ac.cn/handle/181551/8825
专题微细加工光学技术国家重点实验室(开放室)
作者单位1.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
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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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