Laser-induced atmospheric Cuxo formation on copper surface with enhanced electrochemical performance

Patent metadata

Field	Value
Publication number	US-12018381-B2
Application number	US-202217892014-A
Country	US
Kind code	B2
Filing date	Aug 19, 2022
Priority date	Aug 20, 2021
Publication date	Jun 25, 2024
Grant date	Jun 25, 2024

Abstract

A method of manufacturing a copper oxide (Cu x O) structure onto a Copper (Cu) surface by fabricating an electroactive hierarchical Cu x O structure directly onto the Cu surface by laser-induced oxidation (LIO). The generated heat from the laser source provides energy for the oxidation of the Cu surface in the presence of atmospheric oxygen. The electroactive hierarchical Cu x O structure is a binder-free nanotextured structure. The electroactive hierarchical Cu x O structure may be used as a glucose sensor.

First claim

What is claimed is:

1. A method of manufacturing a copper oxide (Cu x O) structure onto a Copper (Cu) surface, the method comprising the steps of:
providing the Cu surface and a laser source; and
fabricating an electroactive hierarchical Cu x O structure directly onto the Cu surface by laser-induced oxidation (LIO), wherein the generated heat from the laser source provides energy for the oxidation of the Cu surface in the presence of atmospheric oxygen, and wherein the energy provided from the laser oxidizes the Cu to form Cu 2 O.

2. The method of claim 1 , wherein the electroactive hierarchical Cu x O structure is a micro-sized structure.

3. The method of claim 1 , wherein the electroactive hierarchical Cu x O structure is a nano-sized structure.

4. The method of claim 1 , wherein the step of fabricating the electroactive hierarchical Cu x O structure directly onto the Cu surface is a reagent-less fabrication.

5. The method of claim 1 , wherein the Cu 2 O is oxidized to form CuO.

6. The method of claim 1 , wherein a plurality of electroactive hierarchical Cu x O structures are fabricated onto the Cu surface, thus forming a Cu x O film.

7. The method of claim 6 , wherein the film composition comprises of a CuO layer disposed on the copper surface.

8. The method of claim 7 , wherein the film composition comprises at least one of Cu 2 O and CuO phases.

9. The method of claim 8 , wherein the Cu 2 O phase comprises a crystalline structure and the CuO phase is amorphous.

10. The method of claim 1 , wherein the laser source is a ND:YAG laser beam.

11. The method of claim 1 , further comprising a step of providing a computer having a processor and a memory, wherein the memory includes processor readable instructions for enabling computer-controlled laser scribing of the electroactive hierarchical Cu x O structure.

12. The method of claim 11 , further comprising a step of autonomously laser scribing the electroactive hierarchical Cu x O structure in a predetermined design onto the Cu surface.

13. The method of claim 12 , further comprising a step of adjusting a variable power output of the laser source during the step of autonomously laser scribing the electroactive hierarchical Cu x O structure in a predetermined design onto the Cu surface.

14. The method of claim 13 , wherein the variable power output of the laser source is between around sixteen watts and around forty watts.

15. The method of claim 1 , further comprising a step of utilizing the fabricated electroactive hierarchical Cu x O structure on the Cu surface as a glucose sensor.

16. The method of claim 15 , wherein the fabricated electroactive hierarchical Cu x O structure on the Cu surface used as a glucose sensor is a binder-free nanotextured structure.

17. A method of manufacturing a copper oxide (Cu x O) structure onto a Copper (Cu) surface, the method comprising the steps of:
providing the Cu surface and a laser source;
fabricating an electroactive hierarchical Cu x O structure directly onto the Cu surface by laser-induced oxidation (LIO), wherein the generated heat from the laser source provides energy for the oxidation of the Cu surface in the presence of atmospheric oxygen; and
providing a computer having a processor and a memory, wherein the memory includes processor readable instructions for enabling computer-controlled laser scribing of the electroactive hierarchical Cu x O structure.

Assignees

• Purdue Research Foundation

Inventors

• Rahimi Rahim
• Sedaghat Hoor Sotoudeh

Classifications

• A61B5/14532

  for measuring glucose, e.g. by tissue impedance measurement · CPC title

• C23C26/00 Primary

  Coating not provided for in groups C23C2/00 - C23C24/00 · CPC title