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Second-harmonic spectroscopy of surface immobilized gold nanospheres above a gold surface supported by self-assembled monolayers
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10.1063/1.2363979
/content/aip/journal/jcp/125/17/10.1063/1.2363979
http://aip.metastore.ingenta.com/content/aip/journal/jcp/125/17/10.1063/1.2363979

Figures

Image of FIG. 1.
FIG. 1.

(a) Chemical structure of merocyanine derivative. (b) Reflection absorption spectrum of merocyanine SAM on gold substrate.

Image of FIG. 2.
FIG. 2.

SEM images of SIGN systems: (a) AET-SIGN, (b) AUT-SIGN, and (c) MERO-SIGN.

Image of FIG. 3.
FIG. 3.

RA spectra for SIGN systems of nanospheres of various sizes: (a) AET-SIGN and (b) AUT-SIGN. The resonance wavelength of gap-mode LSPs obtained from RA spectra plotted as a function of . (c) The theoretical curves assuming that the ambient dielectric constants , 1.3, and 2.0 are also plotted.

Image of FIG. 4.
FIG. 4.

RA spectra for MERO-SIGN systems of nanospheres of various sizes.

Image of FIG. 5.
FIG. 5.

SH spectra for SIGN systems of nanospheres of various sizes: (a) AET-SIGN and (b) AUT-SIGN.

Image of FIG. 6.
FIG. 6.

The enhancement factor of SH intensity, , plotted as a function of for (a) AET-SIGN and (b) AUT-SIGN at . The theoretical curve based on the formula in Ref. 4 is also plotted, assuming that the ambient dielectric constants are , 1.3, and 2.0.

Image of FIG. 7.
FIG. 7.

SH spectra for SIGN systems of nanospheres of various sizes for the MERO-SIGN systems.

Image of FIG. 8.
FIG. 8.

The enhancement factor of SH intensity, , plotted as a function of for the MERO-SIGN system. It should be noted that the largest enhancement factor is plotted in each nanosphere size. Therefore the fundamental wavelength is described beside the plot.

Image of FIG. 9.
FIG. 9.

The geometry of the SIGN system.

Tables

Generic image for table
Table I.

Coverage of nanospheres estimated from SEM images in Fig. 1.

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/content/aip/journal/jcp/125/17/10.1063/1.2363979
2006-11-02
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Second-harmonic spectroscopy of surface immobilized gold nanospheres above a gold surface supported by self-assembled monolayers
http://aip.metastore.ingenta.com/content/aip/journal/jcp/125/17/10.1063/1.2363979
10.1063/1.2363979
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