Silver nanostructure arrays abundant in sub-5 nm gaps as highly Raman-enhancing substrates

Jun Wang; Liqing Huang; Lin Yuan; Lihua Zhao; Xuehong Feng; Weiwei Zhang; Lipeng Zhai; Jian Zhu

doi:10.1016/j.apsusc.2011.11.106

Silver nanostructure arrays abundant in sub-5 nm gaps as highly Raman-enhancing substrates

Jun Wang
, Liqing Huang
, Lin Yuan
, Lihua Zhao
, Xuehong Feng
, Weiwei Zhang
, Lipeng Zhai
, Jian Zhu

School of Life Science and Technology (SLST)

Xi'an Jiaotong University

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

28 Scopus citations

Abstract

Two types of highly Raman-enhancing arrays substrates were fabricated using anodic aluminum oxide (AAO) templates by controlling the AAO template temperature and evaporated silver thickness during e-beam evaporating: complex patterned Ag nanoparticle arrays abundant in sub-5 nm gaps (type I); hexagonal Ag nanopore arrays (type II). The surface enhanced Raman scattering (SERS) enhancement factors (EF) of both substrates are estimated experimentally to exceed 10 ⁵ , especially that of type I reaches 10 ⁷ due to the existence of numerous sub-5 nm gaps. The simulation using finite-difference time-domain (FDTD) method confirmed that gap effect has significantly improved the substrates' SERS activity.

Original language	English
Pages (from-to)	3519-3523
Number of pages	5
Journal	Applied Surface Science
Volume	258
Issue number	8
DOIs	https://doi.org/10.1016/j.apsusc.2011.11.106
State	Published - 1 Feb 2012

Keywords

Electron beam evaporation
Gap effect
Surface enhanced Raman scattering (SERS)

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10.1016/j.apsusc.2011.11.106

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title = "Silver nanostructure arrays abundant in sub-5 nm gaps as highly Raman-enhancing substrates",

abstract = " Two types of highly Raman-enhancing arrays substrates were fabricated using anodic aluminum oxide (AAO) templates by controlling the AAO template temperature and evaporated silver thickness during e-beam evaporating: complex patterned Ag nanoparticle arrays abundant in sub-5 nm gaps (type I); hexagonal Ag nanopore arrays (type II). The surface enhanced Raman scattering (SERS) enhancement factors (EF) of both substrates are estimated experimentally to exceed 10 5 , especially that of type I reaches 10 7 due to the existence of numerous sub-5 nm gaps. The simulation using finite-difference time-domain (FDTD) method confirmed that gap effect has significantly improved the substrates' SERS activity.",

keywords = "Electron beam evaporation, Gap effect, Surface enhanced Raman scattering (SERS)",

author = "Jun Wang and Liqing Huang and Lin Yuan and Lihua Zhao and Xuehong Feng and Weiwei Zhang and Lipeng Zhai and Jian Zhu",

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T1 - Silver nanostructure arrays abundant in sub-5 nm gaps as highly Raman-enhancing substrates

AU - Wang, Jun

AU - Huang, Liqing

AU - Yuan, Lin

AU - Zhao, Lihua

AU - Feng, Xuehong

AU - Zhang, Weiwei

AU - Zhai, Lipeng

AU - Zhu, Jian

PY - 2012/2/1

Y1 - 2012/2/1

N2 - Two types of highly Raman-enhancing arrays substrates were fabricated using anodic aluminum oxide (AAO) templates by controlling the AAO template temperature and evaporated silver thickness during e-beam evaporating: complex patterned Ag nanoparticle arrays abundant in sub-5 nm gaps (type I); hexagonal Ag nanopore arrays (type II). The surface enhanced Raman scattering (SERS) enhancement factors (EF) of both substrates are estimated experimentally to exceed 10 5 , especially that of type I reaches 10 7 due to the existence of numerous sub-5 nm gaps. The simulation using finite-difference time-domain (FDTD) method confirmed that gap effect has significantly improved the substrates' SERS activity.

AB - Two types of highly Raman-enhancing arrays substrates were fabricated using anodic aluminum oxide (AAO) templates by controlling the AAO template temperature and evaporated silver thickness during e-beam evaporating: complex patterned Ag nanoparticle arrays abundant in sub-5 nm gaps (type I); hexagonal Ag nanopore arrays (type II). The surface enhanced Raman scattering (SERS) enhancement factors (EF) of both substrates are estimated experimentally to exceed 10 5 , especially that of type I reaches 10 7 due to the existence of numerous sub-5 nm gaps. The simulation using finite-difference time-domain (FDTD) method confirmed that gap effect has significantly improved the substrates' SERS activity.

KW - Electron beam evaporation

KW - Gap effect

KW - Surface enhanced Raman scattering (SERS)

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DO - 10.1016/j.apsusc.2011.11.106

M3 - 文章

AN - SCOPUS:84856223054

SN - 0169-4332

VL - 258

SP - 3519

EP - 3523

JO - Applied Surface Science

JF - Applied Surface Science

IS - 8

ER -

Silver nanostructure arrays abundant in sub-5 nm gaps as highly Raman-enhancing substrates

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Keywords

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