Ultrafast Science / 2022 / Article / Fig 8

Review Article

Nature-Inspired Superwettability Achieved by Femtosecond Lasers

Figure 8

Different superhydrophobic silicon surfaces prepared by femtosecond laser ablation under the reactive SF6 gas. (a, b) SEM images of the laser-structured silicon microstructure. (c, d) Water droplet on the fluoroalkylsilane-modified (c) flat silicon surface and (d) textured silicon surface. (e) Photography of a water droplet on the femtosecond laser-structured superhydrophobic black silicon surface. (f) Shape of the water droplet in (e). (g, h) Surface microstructure of the black silicon in (e). Reproduced from [99, 100] with the permission.