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Geometric effect on surface enhanced Raman scattering of nanoporous gold: Improving Raman scattering by tailoring ligament and nanopore ratios
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10.1063/1.3143628
/content/aip/journal/apl/94/21/10.1063/1.3143628
http://aip.metastore.ingenta.com/content/aip/journal/apl/94/21/10.1063/1.3143628
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Figures

Image of FIG. 1.
FIG. 1.

Representative (a) top-view SEM micrograph and (b) 3D electron tomigraphic image of the AP-NPG films with . (c) Top-view SEM of the GP-NPG films Au plated for 100 min. Inset: TEM micrograph. (d) Relationship between and or of GP-NPG films.

Image of FIG. 2.
FIG. 2.

SERS spectra of (a) R6G and (b) CV molecules adsorbed on GP-NPG films with different ratios. Laser excitation: 514.5 nm for both molecules. (c) Nanopore-size dependence of the integrated SERS intensity of Raman bands of R6G and CV at 1650 and , respectively. (d) The normalized SERS enhancements of GP-NPG films as a function of the ratios.

Image of FIG. 3.
FIG. 3.

(a) UV-visible extinction spectra of GP-NPG films with different pore sizes and ratios. (b) Relationship of of GP-NPG (◼) and AP-NPG (▽) films with . (c) of GP-NPG films as a function of .

Image of FIG. 4.
FIG. 4.

[(a) and (b)] Schematic nanostructures used for DDA simulations. Calculated electric field distributions on the top surface of NPG: (c) total electric field , (d) electric field of half hole (e) EM coupling electric field for and ; the distributions of (f) , (g) and (h) for ; and the distributions of (i) , (j) and (k) for . The incident light of 514 nm was polarized in the direction.

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/content/aip/journal/apl/94/21/10.1063/1.3143628
2009-05-28
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Geometric effect on surface enhanced Raman scattering of nanoporous gold: Improving Raman scattering by tailoring ligament and nanopore ratios
http://aip.metastore.ingenta.com/content/aip/journal/apl/94/21/10.1063/1.3143628
10.1063/1.3143628
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