Polarization-dependent hotspots formed in crossed silver nanowires for surface-enhanced Raman spectroscopy

Zhuanfang Bi; Mu Yang; Yang Shang; Xiaoxia Meng; Hao Zhang; Guangyi Shang

doi:10.1016/j.optcom.2018.07.074

Polarization-dependent hotspots formed in crossed silver nanowires for surface-enhanced Raman spectroscopy

Zhuanfang Bi
, Mu Yang
, Yang Shang
, Xiaoxia Meng
, Hao Zhang
, Guangyi Shang^*

^*Corresponding author for this work

Beihang University
China Aerospace Science and Technology Corporation
Nanyang Technological University

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

2 Scopus citations

Abstract

Well-defined metal nanostructures with highly tunable optical properties are promising substrates for surface-enhanced Raman scattering (SERS) research and applications. In this paper, we present a crossed junction to create plasmonic hotspot, which was fabricated by the micromanipulation of chemically synthesized silver nanowires. The field enhancements were evaluated via the detection of Raman spectra by the means of local and remote excitation, respectively. The experimental investigation and numerical simulation of dependence on polarization direction were performed. The nature of the polarization dependent enhancement is further discussed. This work would be valuable for studying properties of more complex regular nanostructure, such as 3-dimensional structures consisting of nanogaps and vertical stacking, for ultrahigh-enhancement SERS.

Original language	English
Pages (from-to)	35-40
Number of pages	6
Journal	Optics Communications
Volume	429
DOIs	https://doi.org/10.1016/j.optcom.2018.07.074
State	Published - 15 Dec 2018

Keywords

Plasmonic hotspots
Polarization
Surface-enhanced Raman scattering

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10.1016/j.optcom.2018.07.074

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title = "Polarization-dependent hotspots formed in crossed silver nanowires for surface-enhanced Raman spectroscopy",

abstract = "Well-defined metal nanostructures with highly tunable optical properties are promising substrates for surface-enhanced Raman scattering (SERS) research and applications. In this paper, we present a crossed junction to create plasmonic hotspot, which was fabricated by the micromanipulation of chemically synthesized silver nanowires. The field enhancements were evaluated via the detection of Raman spectra by the means of local and remote excitation, respectively. The experimental investigation and numerical simulation of dependence on polarization direction were performed. The nature of the polarization dependent enhancement is further discussed. This work would be valuable for studying properties of more complex regular nanostructure, such as 3-dimensional structures consisting of nanogaps and vertical stacking, for ultrahigh-enhancement SERS.",

keywords = "Plasmonic hotspots, Polarization, Surface-enhanced Raman scattering",

author = "Zhuanfang Bi and Mu Yang and Yang Shang and Xiaoxia Meng and Hao Zhang and Guangyi Shang",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = dec,

day = "15",

doi = "10.1016/j.optcom.2018.07.074",

language = "英语",

volume = "429",

pages = "35--40",

journal = "Optics Communications",

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TY - JOUR

T1 - Polarization-dependent hotspots formed in crossed silver nanowires for surface-enhanced Raman spectroscopy

AU - Bi, Zhuanfang

AU - Yang, Mu

AU - Shang, Yang

AU - Meng, Xiaoxia

AU - Zhang, Hao

AU - Shang, Guangyi

PY - 2018/12/15

Y1 - 2018/12/15

N2 - Well-defined metal nanostructures with highly tunable optical properties are promising substrates for surface-enhanced Raman scattering (SERS) research and applications. In this paper, we present a crossed junction to create plasmonic hotspot, which was fabricated by the micromanipulation of chemically synthesized silver nanowires. The field enhancements were evaluated via the detection of Raman spectra by the means of local and remote excitation, respectively. The experimental investigation and numerical simulation of dependence on polarization direction were performed. The nature of the polarization dependent enhancement is further discussed. This work would be valuable for studying properties of more complex regular nanostructure, such as 3-dimensional structures consisting of nanogaps and vertical stacking, for ultrahigh-enhancement SERS.

AB - Well-defined metal nanostructures with highly tunable optical properties are promising substrates for surface-enhanced Raman scattering (SERS) research and applications. In this paper, we present a crossed junction to create plasmonic hotspot, which was fabricated by the micromanipulation of chemically synthesized silver nanowires. The field enhancements were evaluated via the detection of Raman spectra by the means of local and remote excitation, respectively. The experimental investigation and numerical simulation of dependence on polarization direction were performed. The nature of the polarization dependent enhancement is further discussed. This work would be valuable for studying properties of more complex regular nanostructure, such as 3-dimensional structures consisting of nanogaps and vertical stacking, for ultrahigh-enhancement SERS.

KW - Plasmonic hotspots

KW - Polarization

KW - Surface-enhanced Raman scattering

UR - https://www.scopus.com/pages/publications/85050991491

U2 - 10.1016/j.optcom.2018.07.074

DO - 10.1016/j.optcom.2018.07.074

M3 - 文章

AN - SCOPUS:85050991491

SN - 0030-4018

VL - 429

SP - 35

EP - 40

JO - Optics Communications

JF - Optics Communications

ER -

Polarization-dependent hotspots formed in crossed silver nanowires for surface-enhanced Raman spectroscopy

Abstract

Keywords

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