Substrate with a superhydrophobic coating and a method of fabricating thereof

A method of forming a superhydrophobic coating, comprising:

• mixing a solution comprising an alkyl alkoxysilane, a glycidyl-containing alkoxysilane, an alcohol, ammonium hydroxide, and water for 20 to 60 minutes to form a mixture and applying the mixture onto a substrate;
• heating the substrate and the mixture applied thereon, wherein the substrate is functionalized with the alkyl alkoxysilane and the glycidyl-containing alkoxysilane, thereby forming a coated substrate comprising a binding layer on the substrate;
• applying a suspension comprising perfluoroalkyl-functionalized silica nanoparticles onto the coated substrate to form a hydrophobic layer on the binding layer, thereby forming the superhydrophobic coating;
• and
• annealing the substrate with the superhydrophobic coating at a temperature in the range of 100° C. to 300° C. for no more than 2 hours,
• wherein the alkyl alkoxysilane is selected from the group consisting of methytrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, trimethylethoxysilane, and dimethyldiethoxysilane, and
• wherein the glycidyl-containing alkoxysilane is (3-glycidyloxypropyl) trimethoxysilane.