Fluid handling – Flow affected by fluid contact – energy field or coanda effect – Means to regulate or vary operation of device
Reexamination Certificate
2008-04-03
2011-10-18
Schneider, Craig (Department: 3753)
Fluid handling
Flow affected by fluid contact, energy field or coanda effect
Means to regulate or vary operation of device
Reexamination Certificate
active
08037903
ABSTRACT:
This invention relates to a systems and methods of controlling the flow of a fluid in a capillary or microfluidic channel. A first pair of electrodes can influence the wetting of a fluid front at a relatively hydrophobic surface in the channel. A second pair of electrodes can electrolytically generate a bubble that can stop fluid flow when it contacts the hydrophobic surface. Flow of a fluid in a channel can be stopped on contact with the hydrophobic surface and restarted when an electrostatic field reduces the contact angle of the fluid at the hydrophobic surface. The electrostatic field can be removed and the fluid stopped again when an electrolytically generated bubble contacts the hydrophobic surface to reestablish the blocking contact angle of the fluid, gas and surface.
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Ata Erhan
Surangalikar Harshal
Wan Zhiliang
Wang Mark Y.
Wu Guanghua
Baker Gary
Micropoint Bioscience, Inc.
Quine Intellectual Property Law Group P.C.
Schneider Craig
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