DEVICES WITH A PASSAGEWAY FOR ELECTROOSMOTIC FLOW AND METHOD OF MAKING SAME
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United States of America Patent
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Issued Date -
May 17, 2007
app pub date -
Oct 26, 2006
filing date -
Oct 28, 2005
priority date (Note) -
Abandoned
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Abstract
A device has a passageway (14) for electroosmotic flow therealong. The passageway (14) is bordered by an internal surface (12). A porous plug (16,18) is located in the passageway (14) so that there are no gaps between the porous plug (16, 18) and the internal surface (12). The plug (16,18) is made by curing a paste comprising a filler, such as glass powder, and a silicate solution. The passageway preferably has a maximum cross-sectional dimension of greater than 500 .mu.m, a minimum cross-sectional dimension of greater than 500 .mu.m or a cross-sectional area of greater than 0.2 mm.sup.2.
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