Stability and evolution of liquid-gas interfaces on superhydrophobic surfaces

Microstructured superhydrophobic surfaces have broad applications such as anti-fouling and drag reduction.The performance of such surfaces strongly depends on the stability of liquid-gas interfaces, which affects physical processes including wetting transition, restoration and bubble evolution.Various physical factors including pressurization and gas diffusion may destabilize the liquid-air interfaces, and lead to evolution in different manners.In this paper, we first summarize the three types of interfacial stability problems for liquid-gas interfaces.Relying on external stimulations, the liquid-air interface may evolve into different stages and exhibit different morphologies.The recent progress of research on the stability and control of liquid-air interfaces in both droplet systems and submersion circumstances has been reviewed.Based on this review, remaining challenges for future research have been given.