Femtosecond laser treatment for the design of electro-insulating superhydrophobic coatings with enhanced wear resistance on glass.
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.
A. N. Frumkin Institute of Physical Chemistry and Electrochemistry , Leninsky prospect 31 bld. 4, 119071 Moscow, Russia.
Ludmila B
LB
Boinovich
Alexandre G
AG
Domantovskiy
Alexandre M
AM
Emelyanenko
Andrei S
AS
Pashinin
Andrey A
AA
Ionin
Sergey I
SI
Kudryashov
Pavel N
PN
Saltuganov