fig4
![Recent progress of enhanced bubble separation in alkaline water electrolyzer](https://image.oaes.cc/3bc680fa-fc33-45ee-9997-9575849eb87a/cs3025.fig.4.jpg)
Figure 4. The connection between the wettability behavior of different solids in water and air. (A) Superaerophobic surfaces in water; (B) Superhydrophilic surfaces in air; (C) Superaerophilic surfaces in water; (D) Superhydrophobic surfaces in air. These figures are quoted with permission from Andaveh et al.[66].