Figure 3From: Stable superhydrophobic surface of hierarchical carbon nanotubes on Si micropillar arraysRepresentation of water droplets in different conditions. (a) Schematic figure of tiny water droplets sprayed from a nebulizer. (b) Tiny water droplets on CNTs/Si-μp surface. (c) Water droplets on CNTs/Si-μp after three time tests. (d) Water droplets on CNTs/Si surface.Back to article page