Fig. 5: Evolution of the droplet pattern on the surface with cylindrical pillars.
From: Polygonal non-wetting droplets on microtextured surfaces

The pillars are arranged in hexagonal patterns. The diameter of the cross-sectional area, the spacing and the height of the cylindrical pillars are 17.4 μm, 7.6 μm and 90 μm, respectively. a Relationship between F/E and H/H0, where H0 = 318 μm and V0 = 23 nl. The inset defines the contact line lengths of the side (E, blue color) and corner (F, red color) of the droplet. The dots represent the experimental data, and the red curve is the theoretical results obtained by Eq. (4). b Selected images with four different values of H, corresponding to H = 106 μm, 59 μm, 36 μm, and 14 μm, respectively. The experimental data of the four images in (b) are marked in red in (a). Scale bar, 100 μm. Source data are provided as a Source Data file.