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Facile assembling of gold nanorods with large aspect ratio and their surface-enhanced Raman scattering properties
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10.1063/1.2752026
/content/aip/journal/apl/90/26/10.1063/1.2752026
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/26/10.1063/1.2752026
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

TEM images of GNR solutions prepared by (a) two and (b) three times substitution of CTAB with a Milli-Q water. [(c) and (d)] Related SEM images of self-assembled GNRs on the glass substrates prepared using concentrated solution of (a) and (b), respectively.

Image of FIG. 2.
FIG. 2.

Schematic representations of GNR assembly processes using GNR solutions prepared by (a) two and (b) three times substitution of CTAB with a Milli-Q water. Bilayer of CTAB molecule is terminated with the quaternary amines and positively charged.

Image of FIG. 3.
FIG. 3.

Optical absorption spectra of samples shown in Figs. 1(c) and 1(d) (named parallel- and linear-aligned GNRs, respectively). The concentrations of GNRs on both samples are almost same (about ). The spectra include both absorption and scattering by GNRs.

Image of FIG. 4.
FIG. 4.

SERS spectra of R6G adsorbed on samples shown in Figs. 1(c) and 1(d). Both samples have the accurate concentrations of GNRs and R6G in the detection areas: laser wavelength of ; laser power of ; excitation spot size of ; integration number of 254; spectral resolution of . The samples are positioned perpendicular with respect to the excitation source.

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/content/aip/journal/apl/90/26/10.1063/1.2752026
2007-06-26
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Facile assembling of gold nanorods with large aspect ratio and their surface-enhanced Raman scattering properties
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/26/10.1063/1.2752026
10.1063/1.2752026
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