Method of making, and, analyte sensor

• US 9,290,839 B2
• Filed: 06/25/2014
• Issued: 03/22/2016
• Est. Priority Date: 10/31/2005
• Status: Expired due to Fees

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories)
• Original Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories)
• Inventors: Wang, Yi, Henning, Timothy P., Marciniec, Edmund T.
• Primary Examiner(s): BRAYTON, JOHN JOSEPH
• Application Number:
  US14/314,306
• Publication Number:
  US 20140318949A1
• Time in Patent Office: 636 Days
• Field of Search: 204/192.17
• US Class Current: 1/1
• CPC Class Codes: C23C 14/0694 Halides
• CPC Class Codes: C23C 14/205 by cathodic sputtering
• CPC Class Codes: C23C 14/3464 using more than one target C23C14/56 takes precedence
• CPC Class Codes: H01M 4/8885 Sintering or firing
• CPC Class Codes: Y02E 60/50 Fuel cells

Abstract

The subject invention provides conductive stripes, suitable for use as electrodes, and methods of making conductive stripes.

Claims

1. A method of making an electrode, the method comprising:

applying a conductive layer onto a substrate; and

simultaneously sputtering silver from a first target and silver chloride or silver bromide from a second target over the conductive layer to produce an insoluble layer comprising the silver and silver chloride or silver bromide, and

wherein the first target and the second target are different.

2. The method of claim 1, wherein the applying comprises applying a conductive layer having a thickness of between 100 to 2000 angstroms.

3. The method of claim 1, wherein the applying comprises sputtering the conductive layer.

4. The method of claim 1, wherein the first material is silver and the second material is silver chloride.

5. The method of claim 1, wherein the ratio of the first material to second material ranges between 20:

80 and 80;

20.

6. The method of claim 5, wherein the ratio of the first material to the second material is 30:

70.

7. The method of claim 1, wherein the method further comprises forming a second electrode comprising another conductive layer and the method further comprises applying sensing chemistry to the second electrode.

8. The method of claim 7, wherein the sensing chemistry comprises an analyte responsive enzyme and a mediator.

9. The method of claim 1, further comprising providing an adhesion material on the substrate prior to sputtering of the conductive layer.

10. The method of claim 1, wherein the conductive layer is carbon, gold, or silver.