Journal
ADVANCED MATERIALS
Volume 23, Issue 4, Pages 545-+Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201001688
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Funding
- NSFC [60525412, 90923037, 60677016]
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Precise tuning of surface wettability - by means of curvature-driven reversible switching from the pinned to the roll-down superhydrophobic state (see figure) - is reported for the first time. The adhesion force and sliding behaviors of superhydrophobic poly(dimethylsiloxane) (PDMS) pillar arrays show a strong dependence on surface curvature. Alteration of the curvature of the surface allows a water droplet to be easily adjusted from the pinned to the roll-down state, which provides the possibility of precise, in situ control of the movements of water droplets.
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