There are several methods to increase the hydrophilicity of glass substrates. Treating the glass substrates in Piranha solution(acidic or basic), plasma treatment or ozone cleaning are a few effective techniques to make glass substrates more hydrophilic.
https://en.wikipedia.org/wiki/Plasma_cleaning
https://en.wikipedia.org/wiki/Piranha_solution
Dear Muath,
the surface wettability nature is determined throughthe surface chemical composition, roughness and polarity. you could changes theses parameters using physical sputtering tools such as plasma and ion beam which add surface energy to the surface, the enhanced surface energy decreases surface hdrophobocity. also surface composition and polarity could be controlled through making thin film of hydrophilic materials such as oxides.
any way, surface treatment by any tool is a perfect method for your goal.
Dear Muath,
surface treatment is a suitable tool for your purpose. such a treatment adds surface energy to the surface through increasing surface roughness and area. there are many tools such as ion beam and reactive species of gas discharge plasma. also thin film deposition of polar materials such as oxides convert galss into hydrophilic material. plasma polymerization adds a layer of plastic that made it hydrophilic.
Dear Muath,
This type of glass is known as "self-cleaning glass"
The most common surface treatment for making a hydrophilic glass is depositing a layer of titanium oxide on the glass
I found this video, hope it helps.
http://youtu.be/UgbT2fJTqFY
Good luck in your search
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