The most simple way of enhancing hydrophillic characteristics of sio2 is treat
with pure IPA. It is very easy treatment but do not last very long time.

ssood  wrote:Michaela,
As Shay pointed out Plasma treatment would make SiO2 mort hydrophilic.
If plasma is not available, RCA treatment would also make it hydrophilic but
won't increase the surface energy as much as with plasma activation.
I am thinking on the lines of bonding.

Thanks
Sumant Sood
Belford Research.