IP Library Granted Patent US 11,819,339
Granted Patent B2
US 11,819,339 · App. 16/916,843 · Granted Nov 21, 2023

Thermosensitive nanosensor for instantaneous transcutaneous biological measurement

Inventors: Vijay Varadan (State College, PA); Pratyush Rai (State College, PA); Gyanesh Mathur (State College, PA)
Assignee: NANOWEAR INC.
A61B5/6801A61B5/1486C08L33/26A61B2562/0276A61B2562/0285A61B2562/12
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Quick Facts
Patent No.
US 11,819,339
App. No.
16/916,843
Granted
Nov 21, 2023
Kind
B2
Abstract

A thermosensitive nanosensor includes a substrate having a plurality of vertically standing nanostructures attached thereto, the plurality of vertically standing nanostructure being covered with a conductive material to form conductive coated nanostructures; a thermosensitive hydrogel adjacent to the plurality of conductive coated nanostructures; and a cover layer on top of the thermosensitive hydrogel to prevent loss of moisture and mechanical stress.

Claims (34)

1. A thermosensitive nanosensor comprising:

a substrate comprising a plurality of vertically standing nanostructures attached thereto, the plurality of vertically standing nanostructure being covered with a conductive material to form conductive coated nanostructures;

a thermosensitive hydrogel adjacent to the plurality of conductive coated nanostructures;

a cover layer on top of the thermosensitive hydrogel to prevent loss of moisture and mechanical stress.

2. The thermosensitive nanosensor of claim 1 , wherein the substrate includes a fabric sandwiched between an insulating layer and conductive layer.

3. The thermosensitive nanosensor of claim 1 , wherein the cover layer encases the thermosensitive hydrogel.

4. The thermosensitive nanosensor of claim 1 , wherein the cover layer is provided as a coating over the thermosensitive hydrogel.

5. The thermosensitive nanosensor of claim 1 , wherein each of the plurality of the conductive coated nanostructures are coated with the hydrogel, and the hydrogel is coated with the cover layer.

6. The thermosensitive nanosensor of claim 1 , wherein the thermosensitive hydrogel is interdispersed among the conductive coated nanostructures.

7. The thermosensitive nanosensor of claim 6 , wherein the thermosensitive hydrogel includes a plurality of hydrogel strips.

8. The thermosensitive nanosensor of claim 1 , wherein the thermosensitive hydrogel surrounds the plurality of the conductive coated nanostructures.

9. The thermosensitive nanosensor of claim 1 , wherein the thermosensitive hydrogel and cover layer form a covered thermosensitive hydrogel ring which surrounds the plurality of the conductive coated nanostructures.

10. The thermosensitive nanosensor of claim 9 , wherein the covered thermosensitive hydrogel ring surrounds the substrate.

11. The thermosensitive nanosensor of claim 1 , wherein the nanostructures are made of a polymer.

12. The thermosensitive nanosensor of claim 11 , wherein the polymer is embedded into a matrix polymer to form a yarn.

13. The thermosensitive nanosensor of claim 12 , wherein the yarn is a micro denier yarn.

14. The thermosensitive nanosensor of claim 12 , wherein the matrix polymer is made of a material selected from the group consisting of polystyrene, polyvinyl alcohol, ethylene vinyl alcohol, polyacrylamide and poly lactic acid.

15. The thermosensitive nanosensor of claim 12 , wherein the matrix polymer is made of a polyethylene terephthalate modified with sulfonated isocyanate.

16. The thermosensitive nanosensor of claim 2 , wherein the conductive material comprises at least one of metals, alloys, and graphene structures.

17. The conductive layer of claim 1 , wherein the conductive material comprises at least one of metals, alloys, and graphene structures.

18. The thermosensitive nanosensor of claim 1 , wherein the thermosensitive hydrogel is applied as a protective conformal coating film.

19. The thermosensitive nanosensor of claim 1 , wherein the nanostructures are made of a polymer material selected from the group of polyesters consisting of polyethylene terephthalate, polyethylene naphthanate or polybutylene terephthalate.

20. The thermosensitive nanosensor of claim 1 , wherein the nanostructures are made of a polyester and/or polyether-based polyurethane.

21. The thermosensitive nanosensor of claim 1 , wherein the nanostructures are made of polyolefins such as polypropylene.

22. The thermosensitive nanosensor of claim 1 , wherein the thermosensitive hydrogel layer is applied as an annular ring.

23. A 3-electrode chemical cell, comprising an array of thermosensitive nanosensors according to claim 1 internconnected to provide a working electrode, a reference electrode and a counter electrode.

24. The thermosensitive nanosensor of claim 1 , wherein an enzyme or buffer is included in the hydrogel, the enzyme or buffer selected to detect a metabolite.

25. The thermosensitive nanosensor of claim 1 , wherein the hydrogel comprises a comb-like structure formed by grafting polymer chains with hydrophilic end groups such as amines, amides, acrylates.

26. The thermosensitive nanosensor of claim 1 , wherein the hydrogel is a hydrogel polymer network comprising hydrophilic groups selected from the group consisting of amines, amides, and acrylates.

27. The thermosensitive nanosensor of claim 1 , wherein the hydrogel is an interpenetrating polymer network gel.

28. The thermosensitive nanosensor of claim 26 , wherein the interpenetrating polymer network gel includes polyacrylamide and polyacrylate.

29. The thermosensitive nanosensor of claim 1 , wherein the hydrogel is selectively crosslinked by varying the concentration of initiator used during hydrogel polymerization.

30. The thermosensitive nanosensor of claim 1 , wherein the thermosensitive hydrogel has a micelle like structure which opens up on contact with moisture.

31. The thermosensitive nanosensor of claim 1 , wherein the cover layer is in the form of elastomers, fibers or films from at least one of the natural, synthetic, and inorganic polymers.

Assignments (2)
SECURITY INTEREST Recorded Mar 3, 2021
From: NANOWEAR INC.
To: FOUR CORNERS FUND LLC
Reel/Frame 055481/0214 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 29, 2020
From: MATHUR, GYANESH; RAI, PRATYUSH; VARADAN, VIJAY
To: NANOWEAR INC.
Reel/Frame 054216/0151 →
Continuity (2)
Provisional Application 62869226 · Jul 1, 2019
Related Publication 20210000417A1 · Jan 7, 2021