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Surfaces and their interactions

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Photoinduced hydrophilicity of TiO2

TiO2 is known to be photo-catalytic : under solar irradiation, organics adsorbed at the surface are oxidized. This mechanism provides a simple rationale for the self-cleaning properties of TiO2. However, it does not explain why mineral contaminants are eliminated as well. In fact, smaller dust particles should stick all the better as the surface is deprived of organic contaminents... We have demonstrated that UV irradiated TiO2 layers are non-adhesive in the presence of water, thus (...)

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The unexpected impact of line defects on contact angles

where, setting out to provide a rationale for the Cassie relation, we had to conclude that it does not hold...

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