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Atomic force microscope manipulation of gold nanoparticles for controlled Raman enhancement
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10.1063/1.2822418
/content/aip/journal/apl/92/2/10.1063/1.2822418
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/2/10.1063/1.2822418
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Figures

Image of FIG. 1.
FIG. 1.

(a) AFM image of four isolated AuNPs arranged into a line. The bidirectional arrow represents the incident electric vector. (b) AFM image of the four AuNPs after being pushed closer to each other by AFM manipulation. (c) SERS spectra of 4-MT adsorbed on the four AuNPs in (b) at different polarization angles. (d) Corresponding EF values of the four AuNPs in (a) and (b) at different polarization angles (laser wavelength is ).

Image of FIG. 2.
FIG. 2.

(a)–(c) AFM images of three AuNPs before and after AFM manipulation. The scan size is . (d) Corresponding EF values for the three AuNPs. Solid squares, circles, and triangles represent the EF values of the AuNPs in (a), (b), and (c), respectively.

Image of FIG. 3.
FIG. 3.

Enhancement factors vs the number of AuNPs. The solid circles and squares represent the EF values under parallel and perpendicular polarizations, respectively. The open circles and squares represent the corresponding logarithms of the EF values, respectively.

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/content/aip/journal/apl/92/2/10.1063/1.2822418
2008-01-17
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Atomic force microscope manipulation of gold nanoparticles for controlled Raman enhancement
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/2/10.1063/1.2822418
10.1063/1.2822418
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