IP Library › Granted Patent US 12,655,541
Granted Patent B2
US 12,655,541 · App. 18/140,953 · Granted Jun 16, 2026

Shark skin biomimetic fabrics for functional clothing

Inventors: Yan Vivian Li (Fort Collins, CO); Jiayi Wen (Fort Collins, CO); Saloni Purandare (Ames, IA)
Assignee: Colorado State University Research Foundation
D01F6/64B32B3/085B32B5/02B32B27/12B33Y80/00D01F6/18D01F6/70D01F11/127B32B2307/7145B32B2307/746D10B2403/033
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Quick Facts
Patent No.
US 12,655,541
App. No.
18/140,953
Granted
Jun 16, 2026
Kind
B2
Abstract

Embodiments of the present disclosure relate to a denticle array. The denticle array includes a substrate and a plurality of denticles coupled to the substrate. Each denticle of the plurality of denticles includes an upper portion and a lower portion. The upper portion includes an upper body. The lower portion includes a lower body. The upper body includes a first prong extending from a front end of the denticle to a rear end of the denticle, a second prong extending from the front end of the denticle to a rear end of the denticle, and a third prong extending from the front end of the denticle to a rear end of the denticle. A first ridge separates the first prong and second prong. A second ridge separates the first prong from the third prong. The first prong has a length greater than the second prong and the third prong.

Claims (74)

1 . A denticle, comprising:

an upper portion, the upper portion comprising:

an upper body, comprising:

an upper body width;

a first prong extending from a front end of the denticle to a rear end of the denticle;

a second prong extending from the front end of the denticle to the rear end of the denticle;

a third prong extending from the front end of the denticle to the rear end of the denticle;

a first ridge separating the first prong and second prong; and

a second ridge separating the first prong from the third prong,

wherein the first prong has a first prong length greater than a second prong length of the second prong and the third prong; and

a center width at an interface between the upper portion and a lower portion; and

the lower portion comprising a lower body having a lower body width, wherein the upper body width is greater than the lower body width,

wherein the denticle is operable to reduce a dragging force of fluid over the denticle.

2 . The denticle of claim 1 , wherein the denticle comprises polycarbonate (PC), acrylonitrile butadiene styrene (ABS), elastomeric polyurethane (PU), silicone, acrylate-based resins, or combinations thereof.

3 . The denticle of claim 1 , wherein the denticle is doped with gold (Au), silver (Ag), copper (Cu), iron (Fe), molybdenum (Mo), zinc (Zn), titanium (Ti), or combinations thereof.

4 . The denticle of claim 1 , further comprising:

the lower body has a lower body length, wherein the first prong length is greater than the lower body length.

5 . The denticle of claim 4 , wherein the first prong length is from about 100 nm to about 5 mm.

6 . The denticle of claim 1 , wherein the denticle has a height from about 100 nm to about 5 mm.

7 . The denticle of claim 1 , wherein the denticle has a width from about 100 nm to about 5 mm.

8 . A denticle array, comprising:

a substrate;

a plurality of denticles coupled to the substrate, each denticle of the plurality of denticles comprising:

an upper portion, the upper portion comprising:

an upper body, comprising:

an upper body width;

a first prong extending from a front end of the denticle to a rear end of the denticle;

a second prong extending from the front end of the denticle to the rear end of the denticle;

a third prong extending from the front end of the denticle to the rear end of the denticle;

a first ridge separating the first prong and second prong; and

a second ridge separating the first prong from the third prong, wherein the first prong has a length greater than the second prong and the third prong; and

a center width at an interface between the upper portion and a lower portion; and

the lower portion comprising a lower body having a lower body width, wherein the upper body width is greater than the lower body width,

wherein the denticle is operable to reduce a dragging force of fluid over the denticle.

9 . The denticle of claim 8 , wherein the denticle has anti-microbial properties.

10 . The denticle array of claim 8 , wherein the denticles comprise polycarbonate (PC), acrylonitrile butadiene styrene (ABS), elastomeric polyurethane (PU), silicone, acrylate-based resins, or combinations thereof.

11 . The denticle array of claim 9 , wherein the denticle is doped with gold (Au), silver (Ag), copper (Cu), iron (Fe), molybdenum (Mo), zinc (Zn), titanium (Ti), or combinations thereof.

12 . The denticle array of claim 8 , wherein the substrate comprises polycarbonate (PC), acrylonitrile butadiene styrene (ABS), elastomeric polyurethane (PU), silicone, acrylate-based resins, or combinations thereof.

13 . The denticle array of claim 8 , wherein the substrate has a thickness from about 0.1 mm to about 5 mm.

14 . The denticle array of claim 8 , wherein the denticles of the denticle array are aligned at an alignment angle of 0° from a plane of a first direction.

15 . The denticle array of claim 8 , wherein adjacent denticles of the denticle array are arranged at one or more alignment angles, wherein the one or more alignment angles are from 0° to 359° from a plane of a first direction.

16 . The denticle array of claim 8 , wherein a center point of a denticle is aligned in a first direction and a second direction with an adjacent denticle.

17 . The denticle array of claim 8 , wherein a center point of a denticle is a distance from the center point of an adjacent denticle.

18 . The denticle array of claim 17 , wherein the distance is from about 0.5 nm to about 2.5 mm.

19 . The denticle array of claim 8 , wherein a denticle density is from about 40 denticles/cm 2 and about 160 denticles/cm 2 .

20 . A textile, comprising:

a substrate;

a plurality of denticles coupled to the substrate, each denticle of the plurality of denticles comprising:

an upper portion, the upper portion comprising:

an upper body, comprising:

an upper body width;

a first prong extending from a front end of the denticle to a rear end of the denticle;

a second prong extending from the front end of the denticle to a rear end of the denticle;

a third prong extending from the front end of the denticle to a rear end of the denticle;

a first ridge separating the first prong and second prong; and

a second ridge separating the first prong from the third prong, wherein the first prong has a first prong length greater than a second prong length of the second prong and the third prong; and

a center width at an interface between the upper portion and a lower portion; and

the lower portion comprising a lower body having a lower body width, wherein the upper body width is greater than the lower body width,

wherein the denticle is operable to reduce a dragging force of fluid over the denticle.

21 . The textile of claim 20 , wherein the denticle comprises polycarbonate (PC), acrylonitrile butadiene styrene (ABS), elastomeric polyurethane (PU), silicone, acrylate-based resins, or combinations thereof.

22 . The textile of claim 20 , wherein the denticle is doped with gold (Au), silver (Ag), copper (Cu), iron (Fe), molybdenum (Mo), zinc (Zn), titanium (Ti), or combinations thereof.

23 . The textile of claim 20 , wherein the denticle has anti-microbial properties.

24 . The textile of claim 20 , further comprising:

the lower body has a lower body length, wherein the first prong length is greater than the lower body length.

25 . The textile of claim 24 , wherein the first prong length is from about 100 nm to about 5 mm.

26 . The textile of claim 20 , wherein the denticle has a height from about 100 nm to about 5 mm.

27 . The textile of claim 20 , wherein the denticle has a width from about 100 nm to about 5 mm.

28 . The textile of claim 20 , wherein the substrate has a thickness from about 0.1 mm to about 5 mm.

29 . The textile of claim 20 , wherein the denticles of the textile are aligned at an alignment angle of 0° from a plane of a first direction.

30 . The textile of claim 20 , wherein adjacent denticles of the textile are arranged at one or more alignment angles, wherein the one or more alignment angles are from 0° to 359° from a plane of a first direction.

31 . The textile of claim 20 , wherein a center point of a denticle is aligned in a first direction and a second direction with an adjacent denticle.

32 . The textile of claim 20 , wherein a center point of a denticle is a distance from the center point of an adjacent denticle.

33 . The textile of claim 32 , wherein the distance is from about 0.5 nm to about 2.5 mm.

34 . The textile of claim 20 , wherein a denticle density is from about 40 denticles/cm 2 and about 160 denticles/cm 2 .

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 1, 2023
From: LI, YAN VIVIAN; WEN, JIAYI; PURANDARE, SALONI
To: COLORADO STATE UNIVERSITY RESEARCH FOUNDATION
Reel/Frame 064452/0826 →
Continuity (2)
Provisional Application 63336894 · Apr 29, 2022
Related Publication 20230349075A1 · Nov 2, 2023
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