Journal
CHEMPHYSCHEM
Volume 14, Issue 8, Pages 1646-1651Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.201200995
Keywords
hybrid coatings; silica; nanoparticles; nanofilaments; superhydrophobicity
Funding
- Alfred-Werner-Legat
- Universitat Zurich
- Swiss National Science Foundation
- Chinese Academy of Sciences
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A facile method for the preparation of silica/silicone nanofilament hybrid coatings with almost perfect superhydrophobicity (contact angle=179.8 degrees and sliding angle=1.3 degrees) is presented. The coatings are obtained by dip-coating of silica nanoparticles, followed by chemical vapor deposition of silicone nanofilaments. Predominant growth of silicone nanofilaments onto aggregated silica nanoparticles generates a two-tier structure. The effect of silica nanoparticle size on the growth of silicone nanofilaments, along with their anti-wetting properties and transparency are investigated in detail. Surface roughness and anti-wetting properties can be simply regulated by controlling the size of silica nanoparticles.
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