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Confinement of enhanced field investigated by tip-sample gap regulation in tapping-mode tip-enhanced Raman microscopy
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10.1063/1.2785115
/content/aip/journal/apl/91/12/10.1063/1.2785115
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/12/10.1063/1.2785115
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Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) Experimental setup for a tip-enhanced near field Raman system using tapping-mode AFM. (b) Schematic of the dual-gating photon counting scheme.

Image of FIG. 2.
FIG. 2.

(Color online) (a) Tip-enhanced near field Raman intensity of SWCNTs measured while scanning one of two gates through the entire tapping period (spherical dots: a vibrational frequency of the band at ; squared dots: no vibrational frequency at ). (b) Dependence of tip-SWCNTs distance on tip-enhanced near field Raman intensity of the band represented from (a).

Image of FIG. 3.
FIG. 3.

(Color online) [(a) and (b)] Tip-SWCNTs distance dependent Raman intensities of the -band which were measured with different silver tips (tip A and tip B). Both of the tips were prepared by the mirror reaction method under same chemical conditions.

Image of FIG. 4.
FIG. 4.

(Color online) Distance dependent Raman intensities of a vibrational mode of 4-ATP at which were measured on (a) silver-coated substrate and (b) nonsilver-coated substrate with the use of the same silver tip. The data of (b) are presented with a 100 times larger scale in (c) for a better comparison of the decay lengths.

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/content/aip/journal/apl/91/12/10.1063/1.2785115
2007-09-17
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Confinement of enhanced field investigated by tip-sample gap regulation in tapping-mode tip-enhanced Raman microscopy
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/12/10.1063/1.2785115
10.1063/1.2785115
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