Nanoscale spectroscopy with optical antennas

被引：45

作者：

Bharadwaj, Palash ^{[1
]}

Beams, Ryan ^{[1
]}

Novotny, Lukas ^{[1
]}

机构：

[1] Univ Rochester, Inst Opt, Rochester, NY 14627 USA

来源：

CHEMICAL SCIENCE | 2011年 / 2卷 / 01期

基金：

美国国家科学基金会;

关键词：

ENHANCED RAMAN-SCATTERING; NANOPARTICLES; MOLECULES;

D O I：

10.1039/c0sc00440e

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

Optical antennas made of gold nanoparticles are used to enhance the spectroscopic response of single molecules. With a scannable optical half-wave antenna in the form of a gold nanorod we achieve a spatial resolution of 20nm in fluorescence imaging. We explore simultaneous fluorescence and Raman enhancement of dye molecules in the junction of two gold nanoparticles and find similar enhancements as a function of interparticle distance for both fluorescence and Raman scattering. We compare our results with theoretical predictions and provide possible explanations.

引用

收藏

页码：136 / 140

页数：5

相关论文

共 34 条

[1]

Enhancement and quenching of single-molecule fluorescence [J].

Anger, P ;

Bharadwaj, P ;

Novotny, L .

PHYSICAL REVIEW LETTERS, 2006, 96 (11)

[2]

[Anonymous], RAMAN EFFECT

[3]

Strongly interacting plasmon nanoparticle pairs: From dipole-dipole interaction to conductively coupled regime [J].

Atay, T ;

Song, JH ;

Nurmikko, AV .

NANO LETTERS, 2004, 4 (09) :1627-1631

[4]

Spectral dependence of single molecule fluorescence enhancement [J].

Bharadwaj, Palash ;

Novotny, Lukas .

OPTICS EXPRESS, 2007, 15 (21) :14266-14274

[5]

Nanoplasmonic enhancement of single-molecule fluorescence [J].

Bharadwaj, Palash ;

Anger, Pascal ;

Novotny, Lukas .

NANOTECHNOLOGY, 2007, 18 (04)

[6]

Optical Antennas [J].

Bharadwaj, Palash ;

Deutsch, Bradley ;

Novotny, Lukas .

ADVANCES IN OPTICS AND PHOTONICS, 2009, 1 (03) :438-483

[7]

Mapping the plasmon resonances of metallic nanoantennas [J].

Bryant, Garnett W. ;

De Abajo, F. Javier Garcia ;

Aizpurua, Javier .

NANO LETTERS, 2008, 8 (02) :631-636

[8]

Optical frequency mixing at coupled gold nanoparticles [J].

Danckwerts, Matthias ;

Novotny, Lukas .

PHYSICAL REVIEW LETTERS, 2007, 98 (02)

[9]

Controlling the optical response of regular arrays of gold particles for surface-enhanced Raman scattering -: art. no. 075419 [J].

Félidj, N ;

Aubard, J ;

Lévi, G ;

Krenn, JR ;

Salerno, M ;

Schider, G ;

Lamprecht, B ;

Leitner, A ;

Aussenegg, FR .

PHYSICAL REVIEW B, 2002, 65 (07) :0754191-0754199

[10]

ELECTROMAGNETIC-INTERACTIONS OF MOLECULES WITH METAL-SURFACES [J].

FORD, GW ;

WEBER, WH .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1984, 113 (04) :195-287

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