SELF-CLEANING SUPERHYDROPHOBIC SURFACE
First Claim
Patent Images
1. A superhydrophobic structure comprising:
- a titanium substrate;
a nanoporous titanium oxide layer grown on the titanium substrate by anodization, the titanium oxide layer comprising a plurality of nano-tube structures that create a microscopically rough surface on the titanium substrate; and
a hydrophobic coating deposited over the titanium oxide layer to create a superhydrophobic surface on the titanium substrate, whereby the titanium oxide layer provides a photocatalytic reaction with oxygen in surrounding air to oxidize organic contaminants on the superhydrophobic surface.
0 Assignments
0 Petitions
Accused Products
Abstract
A superhydrophobic structure that may have a titanium substrate and nanoporous titanium oxide layer grown on the titanium substrate by anodization. The titanium oxide layer may have a plurality of nano-tube structures that create a microscopically rough surface on the titanium substrate. A hydrophobic coating may be deposited over the titanium oxide layer to create a superhydrophobic surface on the titanium substrate. The titanium oxide layer may provide a photocatalytic reaction with oxygen in surrounding air to oxidize organic contaminants on the superhydrophobic surface.
25 Citations
20 Claims
-
1. A superhydrophobic structure comprising:
-
a titanium substrate; a nanoporous titanium oxide layer grown on the titanium substrate by anodization, the titanium oxide layer comprising a plurality of nano-tube structures that create a microscopically rough surface on the titanium substrate; and a hydrophobic coating deposited over the titanium oxide layer to create a superhydrophobic surface on the titanium substrate, whereby the titanium oxide layer provides a photocatalytic reaction with oxygen in surrounding air to oxidize organic contaminants on the superhydrophobic surface. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A superhydrophobic structure comprising:
-
a titanium substrate; a nanoporous titanium oxide layer grown on the titanium substrate by coating the titanium substrate with a hydrofluoric acid electrolyte and applying a voltage across the titanium substrate such that current flows through the titanium substrate and the hydrofluoric acid electrolyte to grow the titanium oxide layer, the titanium oxide layer comprising a plurality of nano-tube structures that create a microscopically rough surface on the titanium substrate; and a hydrophobic coating deposited over the titanium oxide layer to create a superhydrophobic surface on the titanium substrate. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
-
-
15. A superhydrophobic structure comprising:
-
a titanium substrate; a nanoporous titanium oxide layer grown on the titanium substrate by by coating the titanium substrate with a hydrofluoric acid electrolyte and applying an electrical signal across the titanium substrate to grow the titanium oxide layer; the titanium oxide layer comprising a plurality of nano-tube structures that create a microscopically rough surface on the titanium substrate; and a hydrophobic coating deposited over the titanium oxide layer to create a superhydrophobic surface on the titanium substrate, the hydrophobic coating being comprised of at least one of; a polytetrafluoroethylene; a fluorocarbon; and a fluorinated alkylsilane. - View Dependent Claims (16, 18, 19, 20)
-
-
17. The superhydrophobic structure of clam 15, wherein the coating layer has a thickness of at least about 1 nanometer and no more than about 10 nanometers.
Specification