Novel electrochemical method of fast and reproducible fabrication of metallic nanoelectrodes

Journal Article · Mon Sep 15 00:00:00 EDT 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4895639· OSTI ID:22314461

Silva, R. F.; Oliveira, F. J. ^[1]; Zheludkevich, M. ^[1]

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1. CICECO – Department of Materials and Ceramics Engineering, University of Aveiro, Aveiro (Portugal)

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.

• OSTI ID: 22314461
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 9; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ELECTRIC FIELDS
ELECTROCHEMISTRY
ELECTRODES
ELECTROLYTES
ETCHING
NANOSTRUCTURES
SURFACES
TUNGSTEN
VARIATIONS
WIRES