Accession Number:

ADD015645

Title:

Nanochannel Filter.

Descriptive Note:

Patent Application, Filed 12 Jun 92,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

1992-06-12

Pagination or Media Count:

29.0

Abstract:

The present invention provides a wafer-like glass filter having channels therethrough having an average diameter of less than 1 micron The invention also provides a method for forming such a filter comprising the steps of inserting acid etchable glass rods into respective inert hollow glass tubes heating said rods and tubes to fuse each respective rod to a respective tube drawing each of said fused rods and tubes to reduce the diameter of the rods and tubes to thereby form a filament stacking a plurality of said filaments together to form a stack of filaments heating the stack of filaments to fuse the filaments together to form an elongated bar having a plurality of channels filled with etchable glass drawing said bar until each of the channels has a diameter of less than 1 micron cutting the elongated bar to form a wafer-like filter annealing the filter at an elavated temperature and acid etching the etchable glass in the wafer-like filter to form channels therethrough having an average diameter of less than about 1 micron.

Subject Categories:

  • Textiles

Distribution Statement:

APPROVED FOR PUBLIC RELEASE