NANO COMPOSITE STRUCTURE WITH NANO PATTERNED STRUCTURE ON ITS SURFACE AND METHOD OF PREPARING THE SAME

• US 20150258588A1
• Filed: 03/17/2015
• Published: 09/17/2015
• Est. Priority Date: 03/17/2014
• Status: Active Grant

• Current Assignee: Korea Advanced Institute of Science and Technology
• Original Assignee: Korea Advanced Institute of Science and Technology
• Inventors: MOON, Myoung Woon, KO, Tae Jun, OH, Kyu Hwan, LEE, Heon JU
• Granted Patent: US 11,370,005 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B08B 17/065 the surface having a microscopic surface pattern to achieve the same effect as a lotus flower
• CPC Class Codes: B81B 2207/056 of static structures
• CPC Class Codes: B81C 1/00206 Processes for functionalising a surface, e.g. provide the surface with specific mechanical, chemical or biological properties
• CPC Class Codes: Y10T 428/24479 including variation in thickness

Abstract

Provided are a method of producing a nano composite structure and a nano composite structure produced by using the same. The method comprises producing a substrate; placing a metal net structure above the substrate; and plasma treating the substrate above which the metal net structure is placed. The method allows a nano composite structure with a nano patterned structure on its overall surface to be easily produced. The nano composite structure includes a substrate having a plurality of first protrusions constituting a nano pattern on its surface; and an inorganic particle disposed on an end of at least a portion of the first protrusions.

Claims

1. A nano composite structure comprising:

a substrate comprising a plurality of first protrusions forming a nano pattern on at least one surface; and

an inorganic particle disposed at an end of at least some portions of the first protrusions.

2. The nano composite structure of claim 1, wherein

the substrate comprises at least one selected from a plastic, a fiber, a glass, a metal, a ceramic, and a carbon-based material.

3. The nano composite structure of claim 2, wherein

the plastic comprises at least one selected from polypropylene, polyethylene terephthalate, polystyrene, polymethyl methacrylate, polyvinylidene fluoride, polytetrafluoroethylene, and a copolymer thereof.

4. The nano composite structure of claim 2, wherein

the fiber comprises a natural fiber, a synthetic fiber, or a combination thereof.

5. The nano composite structure of claim 2, wherein

the carbon-based material comprises at least one selected from graphite, carbon fiber, diamond, and graphene.

6. The nano composite structure of claim 2, wherein

the metal comprises at least one selected from iron (Fe), aluminum (Al), stainless steel, copper (Cu), platinum (Pt), gold (Au), silver (Ag), titanium (Ti), silicon (Si), and an alloy thereof.

7. The nano composite structure of claim 1, wherein

the substrate comprises a non-woven fabric.

8. The nano composite structure of claim 18, wherein

each of the first protrusions has a nano-hair shape, a nano fiber shape, a nano-pillar shape, a nano-rod shape, or a nano-wire shape.

9. The nano composite structure of claim 1, wherein

each of the first protrusions has a diameter of about 1 to about 100 nm, a length of about 1 to about 10,000 nm, and an aspect ratio of about 1 to about 100.

10. The nano composite structure of claim 1, wherein

the inorganic particle comprises Ti, Cu, Au, Ag, Cr, Pt, Fe, Al, Si, an alloy thereof, an oxide thereof, or a combination thereof.

11. The nano composite structure of claim 1, wherein

the inorganic particle comprises TiO₂.

12. The nano composite structure of claim 1, wherein

the nano pattern is repeatedly arranged at identical or different gaps.

13. The nano composite structure of claim 1, wherein

the substrate further comprises a plurality of second protrusions that is formed in a mesh pattern.

14. The nano composite structure of claim 13, wherein

the inorganic particle is not disposed at an end of the plurality of the second protrusions.

15. The nano composite structure of claim 13, wherein

the second protrusion is formed in a mesh pattern.

16. The nano composite structure of claim 13, wherein

a height of the second protrusion is equal to or higher than a height of the first protrusion.

17. The nano composite structure of claim 2, further comprising

a hydrophilic thin film coated on at least a portion of the surface of the substrate.

18. The nano composite structure of claim 17, wherein

the hydrophobic thin film comprises a fluorine thin film, a fluorine-containing carbonaceous thin film, an organic hydrogenation silicon thin film, or a combination thereof.

19. The nano composite structure of claim 17, wherein the hydrophobic thin film comprises hexamethyldisiloxane.

20. A nano composite structure comprising:

a substrate;

a plurality of first protrusions forming a nano pattern on at least one surface of the substrate; and

a plurality of second protrusions formed in a mesh pattern on at least the other surface of the substrate where the plurality of first protrusions are formed,

wherein an inorganic particle is disposed at an end of at least some portions of the plurality of first protrusions and the nano pattern is repeatedly formed in between the mesh pattern.