Ultrafast Science / 2022 / Article / Fig 24

Review Article

Nature-Inspired Superwettability Achieved by Femtosecond Lasers

Figure 24

Underwater superaerophobicity of silicon surface and underwater superaerophilicity of PDMS surface achieved by femtosecond laser processing. (a, b) Surface microstructure of the silicon substrate after laser ablation. (c) Bubble on the structured silicon surface in water. (d) Water droplet falling onto the structured silicon surface in air. (e) Underwater bubble rolling away the structured silicon surface. (f, g) Surface microstructure of the PDMS substrate after laser ablation. (h) Water droplet on the structured PDMS surface in air. (i) Water droplet rolling off the structured PDMS surface. (j) Releasing a bubble onto the structured PDMS surface in water. Reproduced from [121] with the permission.