Metallic nanoparticle arrays: A common substrate for both surface-enhanced Raman scattering and surface-enhanced infrared absorption

被引：720

作者：

Le, Fei ^{[1
]}

Brandl, Daniel W. ^{[1
]}

Urzhumov, Yaroslav A. ^{[2
]}

Wang, Hui ^{[3
]}

Kundu, Janardan ^{[3
]}

Halas, Naomi J. ^{[3
,4
]}

Aizpurua, Javier ^{[5
,6
]}

Nordlander, Peter ^{[1
,4
]}

机构：

[1] Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA

[2] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA

[3] Rice Univ, Dept Chem, Houston, TX 77005 USA

[4] Rice Univ, Dept Elect & Comp Engn, Houston, TX 77005 USA

[5] EHU, CSIC, UPV, DIPC, San Sebastian 20018, Spain

[6] EHU, CSIC, UPV, Ctr Fis Mat, San Sebastian 20018, Spain

来源：

ACS NANO | 2008年 / 2卷 / 04期

关键词：

nanoshell; SERS; SEIRA; plasmonics; surface enhanced spectroscopy; plasmon hybridization;

D O I：

10.1021/nn800047e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nanoshell arrays have recently been found to possess ideal properties as a substrate for combining surface enhanced raman scattering (SERS) and surface enhanced infrared absorption (SEIRA) spectroscopies, with large field enhancements at the same spatial locations on the structure. For small interparticle distances, the multipolar plasmon resonances of individual nanoshells hybridize and form red-shifted bands, a relatively narrow band in the near-infrared (NIR) originating from quadrupolar nanoshell resonances enhancing SERS, and a very broadband in the mid-infrared (MIR) arising from dipolar resonances enhancing SEIRA. The large field enhancements in the MIR and at longer wavelengths are due to the lightning-rod effect and are well described with an electrostatic model.

引用

页码：707 / 718

页数：12

共 58 条

[1] Optical properties of gold nanorings -: art. no. 057401 [J].