| Abstract
| - A methodology is demonstrated for creating responsive polymer surfaces that can altertheir wetting characteristics when exposed to a humid environment. For this, we take advantage of thesurface partitioning of block copolymers at the polymer/air interface and utilize a hydrophilic group atthe end of the surface-active block. When exposed to water vapor, the end group, hidden below the surfacewhen in contact with dry air, presents itself to the surface thus significantly reducing the water contactangle. This function can be reversed and repeated again and again by successive exposures of the surfaceto dry and wet environment, respectively.
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