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

Weisheng Yue; Zhihong Wang; John Whittaker; Francisco Lopez-royo; Yang Yang; Anatoly Zayats

doi:10.1039/c7tc00667e

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

Weisheng Yue, Zhihong Wang, John Whittaker, Francisco Lopez-royo, Yang Yang, Anatoly Zayats

Research output: Contribution to journal › Article › peer-review

51 Scopus citations

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.

Original language	English (US)
Pages (from-to)	4075-4084
Number of pages	10
Journal	J. Mater. Chem. C
Volume	5
Issue number	16
DOIs	https://doi.org/10.1039/c7tc00667e
State	Published - 2017

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors would like to thank Dr. Francisco Rodriguez Fortuno (King’s College London) for the discussions of the numerical simulations.

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https://repository.kaust.edu.sa/bitstream/10754/623067/1/c7tc00667e.pdf

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

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.",

author = "Weisheng Yue and Zhihong Wang and John Whittaker and Francisco Lopez-royo and Yang Yang and Anatoly Zayats",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The authors would like to thank Dr. Francisco Rodriguez Fortuno (King{\textquoteright}s College London) for the discussions of the numerical simulations.",

year = "2017",

doi = "10.1039/c7tc00667e",

language = "English (US)",

volume = "5",

pages = "4075--4084",

journal = "J. Mater. Chem. C",

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publisher = "Royal Society of Chemistry",

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AU - Yue, Weisheng

AU - Wang, Zhihong

AU - Whittaker, John

AU - Lopez-royo, Francisco

AU - Yang, Yang

AU - Zayats, Anatoly

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The authors would like to thank Dr. Francisco Rodriguez Fortuno (King’s College London) for the discussions of the numerical simulations.

PY - 2017

Y1 - 2017

N2 - 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.

AB - 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.

UR - http://hdl.handle.net/10754/623067

UR - http://pubs.rsc.org/en/Content/ArticleLanding/2017/TC/C7TC00667E#!divAbstract

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DO - 10.1039/c7tc00667e

M3 - Article

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VL - 5

SP - 4075

EP - 4084

JO - J. Mater. Chem. C

JF - J. Mater. Chem. C

IS - 16

ER -

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

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