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Issue 85, 2015
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Spray-on omniphobic ZnO coatings

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In recent years, the design of highly liquid-repellent surfaces has received great attention. Here, we report a facile method of creating a surface that repels both water and oils; using simple spray-coating, a hierarchically rough ZnO–PDMS composite can be applied to a variety of substrates that serves as a nanostructured surface for further modification. We applied an overcoating of either a fluoropolymer (Teflon AF) or perfluorodecyltrichlorosilane to fabricate low energy surfaces that repel water and oil for a variety of potential uses. The resultant surfaces are superomniphobic, have static contact angles of >140° for droplets of both liquids, and have low sliding angles for both water and oil droplets: <5° for water and <20° for oil.

Graphical abstract: Spray-on omniphobic ZnO coatings

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The article was received on 11 Jun 2015, accepted on 06 Aug 2015 and first published on 13 Aug 2015

Article type: Paper
DOI: 10.1039/C5RA11178A
Author version available: Download Author version (PDF)
Citation: RSC Adv., 2015,5, 69243-69250
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    Spray-on omniphobic ZnO coatings

    N. K. Neelakantan, P. B. Weisensee, J. W. Overcash, E. J. Torrealba, W. P. King and K. S. Suslick, RSC Adv., 2015, 5, 69243
    DOI: 10.1039/C5RA11178A

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