Ultrafast Science / 2022 / Article / Fig 2

Review Article

Nature-Inspired Superwettability Achieved by Femtosecond Lasers

Figure 2

Typical wetting state of a liquid droplet on a solid surface. (a) Droplet on a flat substrate. (b) Droplet on the rough substrate and the liquid fills in the surface microstructures. (c) Droplet on the rough substrate and the liquid cannot penetrate in the surface microstructures.