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US 10,850,275 B2Granted
Gold sensor
AssigneeHewlett-Packard Development Company, L.P.
InventorsSadiq Bengali, Manish Giri
Life of this patent
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Abstract
A microfluidic diagnostic chip may, in an example, include a number of microfluidic channels defined in a substrate each microfluidic channel fluidly coupled to at least one fluidic slot; the at least one fluidic slot to receive a number of fluids, and a number of gold sensors each gold sensor having a thickness of between 1500 and 5000 angstroms (Å).
Claims9
A microfluidic diagnostic chip, comprising:
- a number of microfluidic channels defined in a substrate, each microfluidic channel fluidly coupled to at least one fluidic slot, the at least one fluidic slot to receive a number of fluids;
- a number of gold sensors, each gold sensor having a thickness of between 1500 and 5000 angstroms (Å),
- a first fluidic feed slot into which an amount of an analyte is to be introduced fluidly coupled to a first of the fluidic channels;
- the number of gold sensors formed on top of a layer of tantalum;
- and
- a passivation layer formed over the tantalum, wherein the passivation layer does not cover the gold sensors;
- wherein the thickness of the passivation layer is 1500 Å.
4 more elements
A microfluidic diagnostic chip, comprising:
- a number of microfluidic channels defined in a substrate, each microfluidic channel fluidly coupled to at least one fluidic slot;
- the at least one fluidic slot to receive a number of fluids:
- a number of gold sensors, each gold sensor having a thickness of between 1500 and 5000 angstroms (Å);
- a layer of tantalum intermediate to the substrate and the gold sensors;
- a layer of silicon carbide, the layer of silicon carbide covers exposed portions of the layer of tantalum to prevent interference in an electric field created by the gold sensors as the gold sensors receive a charge;
- wherein the thickness of the silicon carbide is 1500 Å.
3 more elements
Dependencies are inferred from the claim text.