Metastable States and Wetting Transition of Submerged Superhydrophobic   Structures

doi:10.1103/PhysRevLett.112.196101

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	Metastable States and Wetting Transition of Submerged Superhydrophobic Structures
	Lv, Pengyu ; Xue, Yahui ; Shi, Yipeng ; Lin, Hao ; Duan, Huiling
刊名	物理评论快报
	2014
关键词	IMPALEMENT TRANSITIONS ROUGH SURFACES WATER DROPLETS WETTABILITY ADHESION DROPS
DOI	10.1103/PhysRevLett.112.196101
英文摘要	Superhydrophobicity on structured surfaces is frequently achieved via the maintenance of liquid-air interfaces adjacent to the trapped air pockets. These interfaces, however, are subject to instabilities due to the Cassie-Baxter-to-Wenzel transition and total wetting. The current work examines in situ liquid-air interfaces on a submerged surface patterned with cylindrical micropores using confocal microscopy. Both the pinned Cassie-Baxter and depinned metastable states are directly observed and measured. The metastable state dynamically evolves, leading to a transition to the Wenzel state. This process is extensively quantified under different ambient pressure conditions, and the data are in good agreement with a diffusion based model prediction. A similarity law along with a characteristic time scale is derived which governs the lifetime of the air pockets and which can be used to predict the longevity of underwater superhydrophobicity.; Physics, Multidisciplinary; SCI(E); EI; PubMed; 14; ARTICLE; hlin@jove.rutgers.edu; hlduan@pku.edu.cn; 19; 196101; 112
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/315626]
专题	工学院
推荐引用方式 GB/T 7714	Lv, Pengyu,Xue, Yahui,Shi, Yipeng,et al. Metastable States and Wetting Transition of Submerged Superhydrophobic Structures[J]. 物理评论快报,2014.
APA	Lv, Pengyu,Xue, Yahui,Shi, Yipeng,Lin, Hao,&Duan, Huiling.(2014).Metastable States and Wetting Transition of Submerged Superhydrophobic Structures.物理评论快报.
MLA	Lv, Pengyu,et al."Metastable States and Wetting Transition of Submerged Superhydrophobic Structures".物理评论快报 (2014).