Sieve electrooosmotic flow pump
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United States of America Patent
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Issued Date -
Dec 9, 2004
app pub date -
Jul 27, 2004
filing date -
Oct 2, 2001
priority date (Note) -
Abandoned
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Abstract
The present invention provides a pump for generating an Electroosmotic Flow (EOF) in a solution in a canal, guide, pipe or equivalent. Electroosmotic flow is generated by application of an electric field through a solution in a canal defined by insulating walls. The phenomenon depends on ionisation of sites on the surface so that for electroneutrality there is an excess mobile charge in the solution. The electric field acts on the excess charge in the solution causing the fluid to flow. The quantity and distribution of excess charge in the solution depends on the solution and the surface materials and is related to a parameter, the zeta (z) potential characterising material/solution combinations.
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