1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Effects of extraneous surface charges on the enhanced Raman scattering from metallic nanoparticles
Rent:
Rent this article for
USD
10.1063/1.4809524
/content/aip/journal/jcp/138/22/10.1063/1.4809524
http://aip.metastore.ingenta.com/content/aip/journal/jcp/138/22/10.1063/1.4809524
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The SERS enhancement ratio of (a) radial and (b) tangential molecules near a silver sphere of the radius = 5 nm with surface charges: = 5 × 10 C, = 8.33 × 10 C, = 1.67 × 10 C, and = 2.5 × 10 C. The distance between the molecule and the sphere is fixed at = 5 nm.

Image of FIG. 2.
FIG. 2.

(a) The distance dependence of the SERS enhancement ratio for radial molecule near a silver sphere of radius = 5 nm with the surface charges: = 5 × 10 C and = 10 C. The solid and dashed curves represent the results with and without the image-field effects, respectively. The frequency for each curve is chosen to be at the respective resonance. (b) The ratio for the charged sphere with surface charges and to that for the uncharged sphere. The image-field effects are included.

Image of FIG. 3.
FIG. 3.

(a) The two strongest modes of the Raman spectrum of a free pyridine molecule at an incident wavelength of 357 nm as obtained in Ref. . (b) SERS spectrum of pyridine at a separation of 1 nm from a neutral ( = 0) and charged ( = 2.78 × 10 C and = 5.56 × 10 C) silver spheres of radius 5 nm at an incident wavelength 357 nm.

Image of FIG. 4.
FIG. 4.

The enhancement ratio of the 4th-power electric field, |/ |, at the position of the molecule near a neutral sphere of radius (a) = 5 nm and (b) = 10 nm at a distance = 5 nm. The results are obtained from the GN model and Mie theory as indicated in the figure.

Image of FIG. 5.
FIG. 5.

(a) Same as Fig. 4(b) , but including the MLWA results. (b) Same as Fig. 1(a) , but for a sphere of radius = 10 nm using the MLWA theory.

Loading

Article metrics loading...

/content/aip/journal/jcp/138/22/10.1063/1.4809524
2013-06-10
2014-04-21
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effects of extraneous surface charges on the enhanced Raman scattering from metallic nanoparticles
http://aip.metastore.ingenta.com/content/aip/journal/jcp/138/22/10.1063/1.4809524
10.1063/1.4809524
SEARCH_EXPAND_ITEM