Nano Science and Technology Institute
Nanotech 2008 Vol. 1
Nanotech 2008 Vol. 1
Nanotechnology 2008: Materials, Fabrication, Particles, and Characterization - Technical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, Volume 1
Chapter 6: Characterization

Preparation and characterization of ultrasharp tungsten wires

Authors:M. Kulakov, I. Luzinov, K. Kornev
Affilation:Clemson University, US
Pages:892 - 895
Keywords:electrochemical polishing, tugsten wire, ultrasharp tip, terrace, meniscus, emitting characteristics
Abstract:The ultrasharp tungsten wires were produced by electrochemical method for electroexplosion of polymers. The effects of electropolishing control parameters, tungsten wire diameter, applied voltage and depth of the wire immersion into electrolyte, on the tip radius were studied. Using video microscopy and particle image analysis, we propose a mechanism of the tungsten wire thinning at the electrolyte-air interface. The terrace instability developed during the polishing at some critical conditions and role of a meniscus created between the wire and electrolyte were also explored. Finally, emitting characteristics of the produced ultrasharp tungsten wires were studied in air and liquid media.
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