Fabrication of nanoscale gold disk electrodes using ultrashort pulse etching
SCIE
SCOPUS
- Title
- Fabrication of nanoscale gold disk electrodes using ultrashort pulse etching
- Authors
- Woo, DH; Kang, H; Park, SM
- Date Issued
- 2003-12-01
- Publisher
- AMER CHEMICAL SOC
- Abstract
- A novel method for preparing a nanometer-sized gold disk electrode is described. The electrode was fabricated by electrochemical etching of a gold wire, insulating the etched wire with a varnish with the exception of the apex, and cutting down the apex by applying ultrashort (40 ns) etching pulses in an HCl solution. Cyclic voltammograms of a 0.10 M ferrocyanide solution recorded at the electrode showed that a series of etching pulses gradually reduced the diffusion-limited current at the electrode by etching its apex. Characterization by cyclic voltammetry and scanning electron microscopy revealed the transformation of a cone-shaped apex into a disk-shaped electrode with a radius of typically between 50 and 250 nm.
- Keywords
- SCANNING-TUNNELING-MICROSCOPY; NANOMETER-SIZED ELECTRODES; ELECTROCHEMICAL MICROSCOPY; TIPS; ULTRAMICROELECTRODES
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/18215
- DOI
- 10.1021/AC034584+
- ISSN
- 0003-2700
- Article Type
- Article
- Citation
- ANALYTICAL CHEMISTRY, vol. 75, no. 23, page. 6732 - 6736, 2003-12-01
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