Ultimate Stable Underwater Superhydrophobic State

doi:10.1103/PhysRevLett.119.134501

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	Ultimate Stable Underwater Superhydrophobic State
	Xiang, Yaolei ; Huang, Shenglin ; Lv, Pengyu ; Xue, Yahui ; Su, Qiang ; Duan, Huiling
刊名	PHYSICAL REVIEW LETTERS
	2017
关键词	DRAG REDUCTION SURFACES STABILITY ROUGHNESS PRESSURE WATER SLIP EVEN GAS
DOI	10.1103/PhysRevLett.119.134501
英文摘要	Underwater metastability hinders the durable application of superhydrophobic surfaces. In this work, through thermodynamic analysis, we theoretically demonstrate the existence of an ultimate stable state on underwater superhydrophobic surfaces. Such a state is achieved by the synergy of mechanical balance and chemical diffusion equilibrium across the entrapped liquid-air interfaces. By using confocal microscopy, we in situ examine the ultimate stable states on structured hydrophobic surfaces patterned with cylindrical micropores in different pressure and flow conditions. The equilibrium morphology of the meniscus is tuned by the dissolved gas saturation degree within a critical range at a given liquid pressure. Moreover, with fresh lotus leaves, we prove that the ultimate stable state can also be realized on randomly rough superhydrophobic surfaces. The finding here paves the way for applying superhydrophobic surfaces in environments with different liquid pressure and flow conditions.; National Natural Science foundation of China (NSFC) [11521202, 11632001]; SCI(E); ARTICLE; 13; 119
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/484836]
专题	工学院
推荐引用方式 GB/T 7714	Xiang, Yaolei,Huang, Shenglin,Lv, Pengyu,et al. Ultimate Stable Underwater Superhydrophobic State[J]. PHYSICAL REVIEW LETTERS,2017.
APA	Xiang, Yaolei,Huang, Shenglin,Lv, Pengyu,Xue, Yahui,Su, Qiang,&Duan, Huiling.(2017).Ultimate Stable Underwater Superhydrophobic State.PHYSICAL REVIEW LETTERS.
MLA	Xiang, Yaolei,et al."Ultimate Stable Underwater Superhydrophobic State".PHYSICAL REVIEW LETTERS (2017).