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Surface enhanced Raman scattering of nanoporous gold: Smaller pore sizes stronger enhancements
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10.1063/1.2722199
/content/aip/journal/apl/90/15/10.1063/1.2722199
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/15/10.1063/1.2722199
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Figures

Image of FIG. 1.
FIG. 1.

(Color online) Representative SEM micrographs of nanoporous gold with various nanopore sizes. (a) Nanoporous gold film after dealloying at room temperature; (b) dealloyed at room temperature for ; (c) thoroughly rinsed nanoporous gold annealed at for ; (d) for ; (e) for , and (f) for . (g) Nanoporous gold with short-time rinsing and annealed at for . (h) The relationship between nanopore sizes of thoroughly rinsed nanoporous gold and the annealing temperatures.

Image of FIG. 2.
FIG. 2.

(Color online) SERS spectra of nanoporous gold with different pore sizes for (a) R6G aqueous solution and (b) CV methanol solution. (c) Pore size dependence of the integrated intensities of Raman band at the concentrations of R6G and Raman band at the concentrations of CV. Laser excitation: for R6G and for CV.

Image of FIG. 3.
FIG. 3.

(Color online) SERS spectra of nanoporous gold with different ligament surface roughness for R6G aqueous solution. The spectra collected from 5 and nanoporous gold are plotted for comparison.

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/content/aip/journal/apl/90/15/10.1063/1.2722199
2007-04-12
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Surface enhanced Raman scattering of nanoporous gold: Smaller pore sizes stronger enhancements
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/15/10.1063/1.2722199
10.1063/1.2722199
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