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Surface enhanced fluorescence and Raman scattering by gold nanoparticle dimers and trimers
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10.1063/1.4776227
/content/aip/journal/jap/113/3/10.1063/1.4776227
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/3/10.1063/1.4776227

Figures

Image of FIG. 1.
FIG. 1.

The setup of the home-built confocal spectroscopic system.

Image of FIG. 2.
FIG. 2.

The SEM images of GNPs prepared with the addition of different amounts of NaCl solution: (a) 0 μl (GM), (b) 50 μl (GMDT), (c) 100 μl and (d) 200 μl. The dimers and trimers are highlighted by yellow and green circles. Inset: the TEM image of the gap.

Image of FIG. 3.
FIG. 3.

The absorption spectra of the (a) GM and (b) GMDT. Insets: The SEM images of GM, GD, and GT.

Image of FIG. 4.
FIG. 4.

SEF spectra excited with 532 nm from (a) Rh6G, (b) GM, and (c) GMDT.

Image of FIG. 5.
FIG. 5.

SERS spectra excited with 632.8 nm from (a) Rh6G, (b) GM, and (c) GMDT.

Image of FIG. 6.
FIG. 6.

Images of the simulated distributions of |E|2 were plotted in logarithmic scale with (a)-(c) 532 and (d)-(f) 632.8 nm excitation for GM, GD, and GT.

Image of FIG. 7.
FIG. 7.

Surface average of |E|2 with 0, 1, and 2 nm distance from the surfaces of GM, GD, and GT. Inset: Three integrated enveloping surfaces of GD.

Tables

Generic image for table
Table I.

The enhancement factor of SEF and SERS excited at 532 and 632.8 nm from GM, GD, GT, and GMDT.

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/content/aip/journal/jap/113/3/10.1063/1.4776227
2013-01-16
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Surface enhanced fluorescence and Raman scattering by gold nanoparticle dimers and trimers
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/3/10.1063/1.4776227
10.1063/1.4776227
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