Method for immobilizing enzymes using ultraviolet curing

Patent metadata

Field	Value
Publication number	US-11739361-B2
Application number	US-201916731323-A
Country	US
Kind code	B2
Filing date	Dec 31, 2019
Priority date	Dec 31, 2019
Publication date	Aug 29, 2023
Grant date	Aug 29, 2023

Abstract

A method comprises printing a conductive ink on a substrate to form one or more electrodes and printing an electrode ink on one or more of the electrodes. The conductive and electrode inks are cured. Next, an enzyme ink layer is printed on at least one electrode, and the enzyme ink layer is cured with ultraviolet light. Each of the printing and curing processes are performed in an in-line process.

First claim

What is claimed is:

1. A method, comprising:
printing a conductive ink on or in a substrate to form one or more electrodes;
printing an electrode ink on one or more of the electrodes;
curing the conductive and electrode inks to form the one or more electrodes with a conductive ink layer under or connected to an electrode ink layer;
printing an enzyme ink layer on the electrode ink layer of at least one electrode; and
curing the enzyme ink layer with ultraviolet light, wherein each of the printing and curing processes are performed in an in-line process.

2. The method of claim 1 , wherein the enzyme ink layer is a multi-layer structure and printing the enzyme ink layer comprises printing a first enzyme ink layer, curing the first enzyme ink layer with ultraviolet light, and printing a second enzyme ink layer on the first enzyme ink layer.

3. The method of claim 1 , further comprising printing one or more material layers on the cured enzyme ink layer.

4. The method of claim 1 , wherein the substrate is flexible.

5. The method of claim 1 , wherein the substrate is a 3D object.

6. The method of claim 1 , wherein curing the enzyme ink layer comprises exposing the enzyme ink to ultraviolet light for about 2 to 60 seconds.

7. The method of claim 1 , wherein printing the enzyme ink layer comprises extruding the enzyme ink on at least one electrode in about 2 to 60 seconds.

8. The method of claim 1 , further comprising leaching materials from the cured enzyme ink.

9. The method of claim 1 , wherein the cured enzyme ink layer is a transducer layer.

10. The method of claim 9 , wherein the cured enzyme ink layer is a biosensor transducer layer.

11. The method of claim 1 , further comprising printing dielectric material on one or more portions of the electrode ink layer.

Assignees

• Palo Alto Res Ct Inc
• Xerox Corp

Inventors

• Pirmoradi Fatemeh Nazly
• Whiting Gregory

Classifications

• C12Q1/001 Primary

  Enzyme electrodes · CPC title

• C12N11/08

  the carrier being a synthetic polymer · CPC title

• C12N13/00

  Treatment of microorganisms or enzymes with electrical or wave energy, e.g. magnetism, sonic waves · CPC title

• G01N27/3272 Primary

  Test elements therefor, i.e. disposable laminated substrates with electrodes, reagent and channels (optical biosensors G01N33/52) · CPC title