Figure 5.

(a) Water-capturing surfaces of fused Stenocara beetle overwings: (i) Photograph and SEM images of wax-stained (colored) and unstained beetle wing regions (wax-free; black); (ii) Time-dependent growth of water droplets in a fog-laden wind; (b) Hydrophilic-patterned superhydrophobic Si nanowire (NW) arrays for water droplet guiding: (i) Fabrication of tilted Si NW arrays featuring a water guiding track; (ii) Sequential photographs of a water droplet guided along the hydrophilic track. Reproduced from [12,77] with permission by Nature Publishing Group, Copyright 2010 and by ACS Publications, Copyright 2011.