Issue 11, 2012
From the journal:

Nanoscale

Plasmonic near-field in the vicinity of a single gold nanoparticle investigated with fluorescence correlation spectroscopy

Guowei Lu,*a   Jie Liu,a   Tianyue Zhang,a   Wenqiang Li,a   Lei Hou,a   Chunxiong Luo,a   Franck Lei,b   Michel Manfaitb  and  Qihuang Gong*a  

* Corresponding authors

a Department of Physics, State Key Laboratory for Mesoscopic Physics, Peking University, 100871 Beijing, China
E-mail: guowei.lu@pku.edu.cn, qhgong@pku.edu.cn

b Unité MéDIAN, UMR CNRS 6237, UFR Pharmacie, Université de Reims Champagne-Ardenne, 51 rue Cognacq-Jay, 51096 Reims cedex, France

Abstract

We proposed the estimation of the plasmonic near-field volume in the vicinity of a single gold nanoparticle, and observed experimentally the near-field variation due to a change in the polarization of the illuminating light. Under total-internal-reflection illumination, the plasmonic near-field volume is varied by tuning the polarization of the excitation light. The variation in the optical near-field around a single gold nanoparticle was simulated theoretically with a finite-difference time domain method, and was characterized experimentally employing a fluorescence correlation spectroscopy technique. The experimental results are in agreement quantitatively with the theoretical analysis. These results are highly relevant to important efforts to clarify the interaction between the emitter and the plasmonic antenna, and should be helpful in developing a plasmonic-enhanced total-internal-reflection fluorescence imaging microscope.

Graphical abstract: Plasmonic near-field in the vicinity of a single gold nanoparticle investigated with fluorescence correlation spectroscopy

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Article information

DOI
https://doi.org/10.1039/C2NR12137A
Article type
Paper
Submitted
31 Dec 2011
Accepted
26 Mar 2012
First published
30 Mar 2012

Nanoscale, 2012,4, 3359-3364

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Plasmonic near-field in the vicinity of a single gold nanoparticle investigated with fluorescence correlation spectroscopy

G. Lu, J. Liu, T. Zhang, W. Li, L. Hou, C. Luo, F. Lei, M. Manfait and Q. Gong, Nanoscale, 2012, 4, 3359 DOI: 10.1039/C2NR12137A

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