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US 12,220,701 B2Granted
Microfluidic valves
AssigneeHewlett-Packard Development Company, L.P.
InventorsPavel Kornilovich, Daniel C. Curthoys, Alexander N. Govyadinov
Life of this patent
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Abstract
A microfluidic valve may include a first portion of a liquid conduit to contain a fluid, a second portion of the liquid conduit to contain a liquid and a constriction between the first portion and the second portion and across which a capillary meniscus is to form between the fluid and liquid, the constriction comprising an edge along a ceiling of the constriction.
Claims12
A microfluidic valve comprising:
- a first portion of a liquid conduit to contain a fluid;
- a second portion of the liquid conduit to contain a liquid;
- a constriction between the first portion and the second portion and across which a capillary meniscus is to form between the fluid and liquid, wherein the constriction includes an interface where the liquid conduit changes from a larger flow passage to a smaller flow passage, the constriction comprising an edge along a ceiling of the microfluidic valve;
- additional constrictions comprising narrowing regions arranged in series within the second portion, the additional constrictions extending inward from an interior wall of the second portion;
- and
- sensors located between the additional constrictions and flush with the interior wall of the second portion.
3 more elements
Dependencies are inferred from the claim text.