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US 12,582,337 B2Granted
Solid-state substrate-integrated reference electrode and counter electrode
AssigneeBiolinq Incorporated
InventorsAlan Campbell, Jennifer Ruth Walters Fuchs, Joshua Ray Windmiller
Life of this patent
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Abstract
Aspects are directed to a reference electrode integrated on a surface of a substrate to facilitate functionalization of a working electrode. The reference electrode is used in the electrochemical deposition or electrodeposition of one or more functional layers on a working electrode. The working electrode may be a sensing element of an analyte-selective sensor. Additional aspects of the current subject matter are directed to a counter electrode integrated on a surface of a substrate.
Claims27
A method, comprising:
- providing a device comprising a substrate, a planar reference electrode positioned only on an anterior surface of the substrate, and a working electrode positioned on a microneedle extending from the anterior surface of the substrate, wherein the planar reference electrode and the working electrode form an electrolytic cell in a fluid medium, and wherein the planar reference electrode comprises a transducer positioned on the anterior surface of the substrate and an overlay comprising a redox couple applied to a first surface of the transducer;
- immersing the device in the fluid medium;
- and
- applying an electrical stimulus to the working electrode, thereby causing electrodeposition of a surface layer on the working electrode.
1 more element
A method, comprising:
- providing a device comprising a semiconductor substrate, a reference electrode positioned on an anterior surface of the semiconductor substrate, and a working electrode positioned on a microneedle extending from the anterior surface of the semiconductor substrate, wherein the reference electrode and the working electrode form an electrolytic cell in a fluid medium, and wherein the reference electrode comprises a transducer positioned on the anterior surface of the semiconductor substrate and an overlay comprising a redox couple applied to a first surface of the transducer;
- immersing the device in the fluid medium;
- and
- applying an electrical stimulus to the working electrode, thereby causing electrodeposition of a surface layer on the working electrode.
1 more element
Dependencies are inferred from the claim text.