Langmuir-Blodgett silver nanowire monolayers for molecular sensing using surface-enhanced Raman spectroscopy

被引：1220

作者：

Tao, A

Kim, F

Hess, C

Goldberger, J

He, RR

Sun, YG

Xia, YN

Yang, PD ^{[1
]}

机构：

[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

[3] Univ Washington, Dept Chem, Seattle, WA 98195 USA

来源：

NANO LETTERS | 2003年 / 3卷 / 09期

关键词：

D O I：

10.1021/nl0344209

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Langmuir-Blodgett technique was used to assemble monolayers (with areas over 20 cm(2)) of aligned silver nanowires that are similar to50 nm in diameter and 2-3 mum in length. These nanowires possess pentagonal cross-sections and pyramidal tips. They are close-packed and are aligned parallel to each other. The resulting nanowire monolayers serve as excellent substrates for surf ace-enhanced Raman spectroscopy (SERS) with large electromagnetic field enhancement factors (2 x 105 for thiol and 2,4-dinitrotoluene, and 2 x 109 for Rhodamine 6G) and can readily be used in ultrasensitive, molecule-specific sensing utilizing vibrational signatures.

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页码：1229 / 1233

页数：5

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