Novel electrochemical method of fast and reproducible fabrication of metallic nanoelectrodes
authors Silva, EL; Silva, RF; Zheludkevich, M; Oliveira, FJ
nationality International
journal REVIEW OF SCIENTIFIC INSTRUMENTS
keywords SCANNING-TUNNELING-MICROSCOPY; TUNGSTEN TIPS; MICROELECTRODES; ELECTROHYDRODYNAMICS; ELECTRODE; SENSORS; WIRES; STM; PH
abstract A novel electrochemical wire etching method of fabrication of ultrasharp nanoelectrodes is reported. Tungsten wires can be sharpened to less than 10 nm tip radius in a reproducible manner in less than 1 min by using controllable hydrodynamic electrolyte flow combined with optimized electrochemical etching parameters. The method relies on the variations of the electric field at the surface of a metal wire, while the electrolyte solution is in motion, rather than on the ionic gradient generated in a static solution. (C) 2014 AIP Publishing LLC.
publisher AMER INST PHYSICS
issn 0034-6748
year published 2014
volume 85
issue 9
digital object identifier (doi) 10.1063/1.4895639
web of science category Instruments & Instrumentation; Physics, Applied
subject category Instruments & Instrumentation; Physics
unique article identifier WOS:000342910500075
link 25273774

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