Doubly resonant surface-enhanced Raman scattering on gold nanorod decorated inverse opal photonic crystals

被引：29

作者：

Le Dac Tuyen ^{[1
,2
]}

Liu, An Chi ^{[1
]}

Huang, Chia-Chi ^{[3
]}

Tsai, Pei-Cheng ^{[1
]}

Lin, Jian Hung ^{[1
]}

Wu, Chin-Wei ^{[3
]}

Chau, Lai-Kwan ^{[3
]}

Yang, Tzyy Schiuan ^{[3
]}

Le Quoc Minh ^{[4
]}

Kan, Hung-Chih ^{[1
]}

Hsu, Chia Chen ^{[1
,5
]}

机构：

[1] Natl Chung Cheng Univ, Dept Phys, Chiayi 621, Taiwan

[2] Hanoi Univ Min & Geol, Dept Phys, Hanoi, Vietnam

[3] Natl Chung Cheng Univ, Dept Chem & Biochem, Chiayi 621, Taiwan

[4] VAST Vietnam, Inst Mat Sci, Hanoi, Vietnam

[5] Natl Chung Cheng Univ, Grad Inst Optomechatron, Chiayi 621, Taiwan

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 28期

关键词：

METAL NANOPARTICLES; SILVER ELECTRODE; SPECTROSCOPY; SPECTRA; DEPENDENCE; SUBSTRATE; FIELDS; ARRAYS; SIZE;

D O I：

10.1364/OE.20.029266

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a novel type of surface-enhanced Raman scattering (SERS) substrate constituted of a 3-dimensinal polymeric inverse opal (IO) photonic crystal frame with gold nanorods (Au-NRs) decorating on the top layer. This substrate employs resonant excitation as well as constructive backward scattering of Raman signals to produce large enhancement of SERS output. For the incoming excitation, Au-NRs with appropriate aspect ratio were adopted to align their longitudinal localized surface plasmon band with the excitation laser wavelength. For the outgoing SERS signal, the spectral position of the photonic band gap was tuned to reflect Raman-scattered light constructively. This SERS substrate produces not only strong but also uniform SERS output due to the well control of Au-NRs distribution by the periodic IO structure, readily suitable for sensing applications. (C) 2012 Optical Society of America

引用

页码：29266 / 29275

页数：10

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