Method of producing filaments
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United States of America Patent
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Jul 18, 1989
Grant Date -
N/A
app pub date -
Dec 9, 1987
filing date -
Dec 13, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of producing filaments of sub-micron cross-sectional dimensions including the steps of obtaining a substrate having a base and a delineating layer on the base and a step in a surface of the delineating layer, providing a layer of a material from which the filament is to be formed on the surface which replicates the step in the surface, anisotropically etching the layer of filament material in the direction of the surface so as to leave a filament of the material adjacent the step, and removing the delineating layer to wholly or partially separate the filament from the substrate.
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