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Transparent superhydrophobic PTFE films via one-step aerosol assisted chemical vapor deposition†
Ruijin Liao,Sebastian C. Dixon,Yao Lu,Sanjayan Sathasivam,Ivan P. Parkin,Claire J. Carmalt
RSC Advances Pub Date : 06/05/2017 00:00:00 , DOI:10.1039/C7RA04116K
Abstract

In this study, hierarchical micro/nano-structured transparent superhydrophobic polytetrafluoroethylene (PTFE) films showing a water contact angle (CA) of 168°, a water sliding angle (SA) <1° and transmittance to visible light >90% were prepared on glass substrates via aerosol-assisted chemical vapor deposition (AACVD). Scanning electron microscopy showed the morphology to be rough, composed of both micro and nano sized protrusions. Mechanical testing showed that after impingement from 800 drops of 15 μL water (height = 1 m) or 10 g of sand grains (height = 65 cm), the CA of the transparent PTFE surface was still >150°, still demonstrating excellent superhydrophobicity. The films also showed self-cleaning and anti-corrosion properties. This one-step fabrication is a facile way of producing various kinds of transparent superhydrophobic surfaces.

Graphical abstract: Transparent superhydrophobic PTFE films via one-step aerosol assisted chemical vapor deposition
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