Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 6, Issue 3, Pages 2080-2085Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am4051603
Keywords
superhydrophobicity; wetting; surface electric resistance; femtosecond laser treatment; abrasive resistance; electro-insulating coatings
Funding
- Presidium of the Russian Academy of Sciences
- leading scientific schools of the Russian Federation [NSh-6299.2012.3]
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Femtosecond laser treatment of a glass surface was used to fabricate a multimodal roughness having regular surface ripples with a period of a few micrometers decorated by aggregates of nearly spherical nanoparticles. UV-ozone treatment followed by chemisorption of the appropriate functional fluorosilanes onto the textured surface makes it possible to fabricate a superhydrophobic coating with a specific surface resistance on the order of petaohms on a glass surface. The main advantage of the fabricated coating under severe operating conditions with abrasion loads is the significant durability of its electro-insulating properties. The longevity of the high surface resistivity, even on long-term contact with a water vapor-saturated atmosphere, is directly related to the peculiarities of the surface texture and ripple structure.
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