Single Molecule Directivity Enhanced Raman Scattering using Nanoantennas

被引：123

作者：

Ahmed, Aftab ^{[1
]}

Gordon, Reuven ^{[1
]}

机构：

[1] Univ Victoria, Dept Elect & Comp Engn, Victoria, BC V8P 5C2, Canada

来源：

NANO LETTERS | 2012年 / 12卷 / 05期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Nanoantenna; SERS; single molecule detection; directivity; DIRECTIONAL EXCITATION; SERS; NANOPARTICLE; SPECTROSCOPY; EMISSION; STATISTICS; RADIATION; SIGNALS; PROBES; FIELD;

D O I：

10.1021/nl301029e

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

Single molecule detection by directivity enhanced Raman scattering is demonstrated using nanoantennas. Bianalyte Raman scattering is used to confirm the detection of single molecules of Rhodamine 6G and Nile Blue A in aqueous solution. Calculations show that Raman enhancement factors of 10(13) can be achieved by combined optimization of the local field enhancement (hotspot with 10(11) enhancement) and antenna directionality (with 10(2) enhancement).

引用

页码：2625 / 2630

页数：6

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