Mode-Selective Surface-Enhanced Raman Spectroscopy Using Nanofabricated Plasmonic Dipole Antennas

被引：84

作者：

Zhang, Weihua ^{[1
]}

Fischer, Holger ^{[1
]}

Schmid, Thomas ^{[2
]}

Zenobi, Renato ^{[2
]}

Martin, Olivier J. F. ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Swiss Fed Inst Technol Lausanne, Nanophoton & Metrol Lab, CH-1015 Lausanne, Switzerland

[2] ETH, Dept Chem & Appl Biosci, CH-8093 Zurich, Switzerland

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 33期

关键词：

SINGLE-MOLECULE; OPTICAL ANTENNAS; SCATTERING; SERS; JUNCTIONS;

D O I：

10.1021/jp9042304

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Mode-selective surface-enhanced Raman spectroscopy (SERS) is demonstrated using plasmonic dipole antennas fabricated with electron beam lithography. An similar to 10x change of the relative enhancement between two different Raman modes is observed when the resonance frequency of the plasmonic antennas is tuned over the Raman modes by varying the geometrical parameters of the antennas, i,e., changing their lengths or narrowing their feeding gaps. The comparison between the Rayleigh scattering spectra and the SERS spectra from the same individual plasmonic dipole antennas indicates that this mode-selective SERS phenomenon is a pure electromagnetic effect, providing a quantitative verification of the electromagnetic mechanism of SERS Oil a single nanoantenna level.

引用

页码：14672 / 14675

页数：4

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