Method of producing nanostructures in membrances, and asymmetrical membrane
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United States of America Patent
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Jun 21, 2005
Grant Date -
Aug 28, 2003
app pub date -
Feb 26, 2002
filing date -
Feb 26, 2002
priority date (Note) -
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Abstract
The invention relates to a method of producing nanostructures in membranes, in which method a membrane consisting of a polymer material is irradiated with charged particles, especially ions, to produce particle tracks. The particle tracks in the membrane are etched using an etching liquid and the etching operation is stopped using a stop liquid, in such a manner that asymmetrical structures are formed. Polyimide is used as the membrane material.
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