Smart surfaces with switchable wettability for both aqueous and non-aqueous drops based on zwitterionic sulfobetaine silane (SBSi) have been fabricated. A surfactant solution (aqueous or non-aqueous) rinse (for 5 s) acts as a stimulus and the reversal of surface wettability is achieved simply by a pure water rinse.
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Singh et al. (2017) studied this question.
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