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Self-Cleaning, Superhydrophobic Coatings with Improved Properties, Methods for Fabrication, and Applications Thereof

Detailed Technology Description

This invention is a self-cleaning, superhydrophobic coating characterized by extremely large contact angles (approximately 178-179 degrees) and greatly reduces the need for water as a transport medium. The fabrication methods of the invention can be scaled up for volume production and have been adapted to prepare surfaces that are superoleophobic (non-wetting for oil) or omniphobic (non-wetting for both water and oil). Applications of this technology include self-cleaning windows, wind-turbine blades, aircraft wings, wash-free automobiles, low-friction watercraft hulls, and non-stick medical device implants.

Supplementary Information

Patent Number: US20110229667A1
Application Number: US13059966A
Inventor: Jin, Sungho | Kim, Jin-Yeol | Noh, Kunbae | Choi, Chulmin
Priority Date: 18 Aug 2008
Priority Number: US20110229667A1
Application Date: 8 Jun 2011
Publication Date: 22 Sep 2011
IPC Current: B32B003300 | B05D000300 | B05D000310 | B05D000312 | B05D000500 | B05D000722 | B32B000108 | B32B000326 | B32B003702 | B32B003712 | B32B003714 | B32B003810 | C03C001500 | C23F000100 | C23F000102 | C25D001124 | B82Y003000 | B82Y004000
US Class: 4280341 | 156249 | 205324 | 216002 | 216037 | 216041 | 427230 | 427256 | 427265 | 428141 | 977762 | 977773 | 977888 | 977890
Assignee Applicant: The Regents of the University of California
Title: NANOSTRUCTURED SUPERHYDROPHOBIC, SUPEROLEOPHOBIC AND/OR SUPEROMNIPHOBIC COATINGS, METHODS FOR FABRICATION, AND APPLICATIONS THEREOF
Usefulness: NANOSTRUCTURED SUPERHYDROPHOBIC, SUPEROLEOPHOBIC AND/OR SUPEROMNIPHOBIC COATINGS, METHODS FOR FABRICATION, AND APPLICATIONS THEREOF
Summary: As an article selected from glass window or panel, building exterior, component of automobile, kitchenware, component of airplane, component of telecommunication antenna or satellite, pipeline for transporting liquid containing water and/or oil, biomedical implant, and bottom for boat, yacht or ship (claimed) e.g. brickwall, stonewall, concrete wall, UV filtering windows, tinted glasses, one-way see-through type special windows, airplane cockpit windows, aircraft wings, self-cleaning toilet bowls, kitchen cookwares/pots, no-wash automobiles, safety telecommunication antennas and satellites, water/oil or water/oil-containing liquid transport such as pipeline inner-surface coating; and biomedical implant applications for treating scar tissues grabbing and covering up the implants, protein adhesion and blockage of tubes, drug-release paths, or electrical wiring.
Novelty: Article e.g. glass window or panel, component of automobile, or biomedical implant comprises substrate having several nanowires formed on it to form hydrophobic surface coating exhibiting specific contact angle with water droplet

Industry

Chemical/Material

Sub Category

Chemical/Material Application

Application No.

9108880

Others

Tech ID/UC Case

20634/2009-035-0

Related Cases

2009-035-0

*Abstract

Cleantech is an emerging sector of innovation and deals with products and processes that harness renewable energy sources, minimizes pollution and waste, and reduces the depletion of natural resources, including water supply. There are two different technical approaches for self-cleaning coatings: hydrophobic versus hydrophilic. Both types of coatings clean themselves through the action of water. In the case of the hydrophobic surface, rolling droplets take away the dirt and dust. In the case of the hydrophilic surface, sheeting water carries away dirt. For hydrophobic surfaces, an indicator of their effectiveness is the contact angle of the water on the surface, which measures the amount of surface tension induced by the coating on the water.

*IP Issue Date

Aug 18, 2015

*Principal Investigator

Name: Chulmin(Edward) Choi

Department:

Name: Daehoon Hong

Department:

Name: Sungho Jin

Department:

Name: Jin-Yeol (Eric) Kim

Department:

Name: Kunbae Noh

Department:

Country/Region

USA