Superoleophobic surfaces and methods of making same
US9442375B2 · kind B2 · utility
2Cited by
1References
14Claims
0Family size
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Key dates
| Filing date | Jun 18, 2013 |
| Grant date | Sep 13, 2016 |
| Priority date | — |
| Expiry date | Jun 18, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24405
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
Disclosed herein is a substrate having a surface modified to impart multi-scale roughness, thereby providing superhydrophobic and/or superoleophobic properties. The surface comprises a pattern of microscale pillars topped by a plurality of nanoparticles having a re-entrant convex shape. The area fraction of the surface is also selected to provide the desired superoleophobic properties. Also disclosed herein is a process for creating the modified surface comprising photolithography, optionally followed by vapor deposition. The substrates may be formed into useful articles or applied to pre-formed articles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.