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Buoyancy increase and drag-reduction through a simple superhydrophobic coating

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Abstract

A superhydrophobic paint was fabricated using 1H,1H,2H,2H-perfluorooctyltriethoxysilane (PFOTES), TiO2 nanoparticles and ethanol. The paint has potential for aquatic application of a superhydrophobic coating as it induces increased buoyancy and drag reduction. Buoyance testing showed that the reduction of surface energy by superhydrophobic coating made it feasible that glass, a high density material, was supported by the surface tension of water. In a miniature boat sailing test, it was shown that the low energy surface treatment decreased the adhesion of water molecules to the surface of the boat resulting in a reduction of the drag force. Additionally, a robust superhydrophobic surface was fabricated through layer-by-layer coating using adhesive double side tape and the paint, and after a 100 cm abrasion test with sand paper, the surface still retained its water repellency, enhanced buoyancy and drag reduction.

Graphical abstract: Buoyancy increase and drag-reduction through a simple superhydrophobic coating

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Publication details

The article was received on 10 Feb 2017, accepted on 26 Apr 2017 and first published on 02 May 2017


Article type: Paper
DOI: 10.1039/C7NR00950J
Citation: Nanoscale, 2017, Advance Article
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    Buoyancy increase and drag-reduction through a simple superhydrophobic coating

    G. B. Hwang, A. Patir, K. Page, Y. Lu, E. Allan and I. P. Parkin, Nanoscale, 2017, Advance Article , DOI: 10.1039/C7NR00950J

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