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Updated: Jan 4, 2026

Electrochemical Etching and Characterization of Sharp Field Emission Points for Electron Impact Ionization
Published on: July 12, 2016
Scanning electron microscopy and energy-dispersive X-ray spectroscopy analysis of electrochemically etched graphite
Dinara Sobola1, Pavel Kaspar1, Pavel Tofel1
1Department of Physics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Brno, Czech Republic.
Abstract:
Modern day pencil lead is a material of many possibilities. Manufacture process is fast, easy, and well established, yet the full potential of its use still remains to be uncovered. Graphite content ratio to binding clays determines basic properties of the lead like its toughness and color, but more interesting qualities like conductivity and reactivity as well. Properly employed electrochemical etching with a bubble membrane creates sharp and smooth graphite tips, which can be, given enough graphite content, used as probes in several measurement techniques. Observing and adjusting the tip creation process and the results for use in further research are the objectives of this paper.
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