Fig. 4. CA change of a LM droplet on the sample surfaces after being pressed by a force. (a) Shape change of a LM droplet on the untreated flat silica glass surface after pressing. (b) Shape change of a LM droplet on the laser-structured silica glass surfaces. (c and d) CA change of a LM droplet on different substrates after being pressed by a force: (c) untreated flat surfaces and (d) laser-ablated surfaces.
