Figure 7

Time advancing optical microscopic images of condensations on different surfaces at SP = 1.72: (A) filmwise condensation on a hydrophilic micropillar surface (S1), (B) Wenzel dropwise condensation on a hydrophobic micropillar surface (S2), (C) dropwise condensation on a flat hydrophobic surface (S3), and (D) partial Cassie dropwise condensation on a hydrophobic micropillar surface (S4).