Wettability patterned substrates for pumpless liquid transport and drainage
US10421072B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2015 |
| Grant date | Sep 24, 2019 |
| Priority date | — |
| Expiry date | Jan 30, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/2575
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided herein are methods and materials for the manufacture and use of wettability tracks on various substrates for rapid fluid transport and drainage, even in a condensing environment. The degree of wettability of the materials' surfaces range from superhydrophobic to superhydrophilic. The method centers on the formation of a dispersion of titanium dioxide and a fluoroacrylic co-polymer in an alcohol and water solution. The dispersion may then be deposited onto a surface to form a coating, which is then dried to evaporate the alcohol. The dried coating is exposed to radiation to produce a wedge-shaped track. The coating is exposed to the radiation through a photomask to produce the track. The radiation may be high energy, such as UV radiation. The radiation may be selectively exposed to designated areas on the coating. The hydrophilic wedge-shaped track may have a wedge angle of from 0 degrees to 45 degrees.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.