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Tip-enhanced Raman spectroscopy for investigating adsorbed species on a single-crystal surface using electrochemically prepared Au tips
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10.1063/1.2776860
/content/aip/journal/apl/91/10/10.1063/1.2776860
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/10/10.1063/1.2776860
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Figures

Image of FIG. 1.
FIG. 1.

(Color online) A schematic diagram of a home made optical fiber head.

Image of FIG. 2.
FIG. 2.

(Color online) Top panel: current time curves of Au wires etched in a mixture of HCl:ethanol (1:1v/v) at different voltages. Bottom panel: SEM images of the etched Au tips. A: , B: , C: .

Image of FIG. 3.
FIG. 3.

(Color online) (a) STM image of -bipyridine adlayer on a Au (111) surface obtained with a Au tip (inset shows the high resolution STM image obtained with a Pt–Ir tip). The position of the molecules on the image is indicated by the chemical structure of -bipyridine. The bias potential of the tip and the tunneling current were and , respectively. (b) TERS spectra for the -bipyridine SAM layer on the Au(111) surface (middle spectrum), the bottom spectrum for the tip-retracted case, and the top spectrum for the SERS spectrum. Acquisition time: . Laser power: .

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/content/aip/journal/apl/91/10/10.1063/1.2776860
2007-09-04
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Tip-enhanced Raman spectroscopy for investigating adsorbed species on a single-crystal surface using electrochemically prepared Au tips
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/10/10.1063/1.2776860
10.1063/1.2776860
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