Stability and evolution of liquid-gas interfaces on superhydrophobic surfaces |
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| Authors: | LV Pengyu XUE Yahui DUAN Huiling |
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| Institution: | 1.State Key Laboratory for Turbulence and Complex System, Department of Mechanics and Engineering Science, College of Engineering, Peking Universitity, Beijing 100871, China;2.HEDPS, Center for Applied Physics and Technology, Peking University, Beijing 100871, China;3.IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China |
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| Abstract: | 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. |
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| Keywords: | superhydrophobic surfaces|liquid-gas interfaces|stability|wetting transition|drag reduction |
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