Tunable SERS in Gold Nanorod Dimers through Strain Control on an Elastomeric Substrate

被引：180

作者：

Alexander, Kristen D. ^{[1
]}

Skinner, Kwan ^{[1
]}

Zhang, Shunping ^{[2
]}

Wei, Hong ^{[2
]}

Lopez, Rene ^{[1
]}

机构：

[1] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA

[2] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

来源：

NANO LETTERS | 2010年 / 10卷 / 11期

关键词：

Nanorod; SERS; electrodeposition; elastomer; interparticle gap; AAO template; PLASMON RESONANCES; ELECTRIC-FIELD; RAMAN; NANOSTRUCTURES; NANOPARTICLES; ENHANCEMENT; MOLECULES;

D O I：

10.1021/nl1023172

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this Letter we provide experimental verification of the interparticle distance dependence of the SERS enhancement factor in 1 mu m gold gapped nanorods. Au dimers are fabricated from electrochemically grown heterogeneous Au-Ag-Au nanorods and deposited on a stretchable elastomer film which allows active and reversible tuning of the interparticle gap on the sub-5-nm level. Significantly, this technique allows the distance dependence to be tracked using a single dimer, thereby avoiding enhancement factor reproducibility issues arising from morphological differences in disparate nanoparticle pairs.

引用

页码：4488 / 4493

页数：6

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