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(a) Representative ESEM frame showing a water drop receding from the right at a velocity of 2 μm s−1 on micropillars spaced 75 μm apart, with profile of capillary bridge highlighted; scale bar, 20 μm. (b) Representative ESEM frame showing a water drop receding from the right at a velocity of 2 μm s−1 on micropillars spaced 15 μm apart, with profile of capillary bridge highlighted. Scale bar, 20 μm.
