The effect of sharp solid edges on the droplet wettability

doi:10.1016/j.jcis.2019.05.081

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	The effect of sharp solid edges on the droplet wettability
	Wang ZL(王占龙); Lin K(林岿); Zhao YP(赵亚溥)
刊名	JOURNAL OF COLLOID AND INTERFACE SCIENCE
	2019-09-15
卷号	552 页码:563-571
关键词	Droplet wettability Contact angle Sharp edge Contact line pinning
ISSN号	0021-9797
DOI	10.1016/j.jcis.2019.05.081
通讯作者	Zhao, Ya-Pu(yzhao@imech.ac.cn)
英文摘要	Understanding the role of pinning force in droplet dynamic wetting is of critical importance for surface science studies. Generally, the pinning force is only related to the surface tension and the change of contact angle. However, there is an obvious correlation between the pinning force and the surface geometry. In this paper, the relation between the surface geometry and contact line pinning was studied with systematical experiments and theoretical analysis. We compared the samples with different edge angles and carried out plenty experiments with different liquids. Meanwhile, the theoretical analysis and molecular simulation were carried out. The results show that the sharp edge has a strong pinning effect on the contact line and can significantly change the contact angle and wetting state of droplets. The maximum contact angle of droplet has a linear relation with the edge angle of substrate. The formula of pinning force was revised to consider the impact of surface topography. According to the relationship between surface defect and contact line, we proposed a model to classify the cases of contact line pinning for the first time. Our research will deepen the understanding of contact line pinning and provide help for potentially industrial production designs. (C) 2019 Elsevier Inc. All rights reserved.
分类号	二类/Q1
资助项目	National Natural Science Foundation of China (NSFC)[U1562105] ; National Natural Science Foundation of China (NSFC)[11372313] ; Chinese Academy of Sciences (CAS) through CAS Interdisciplinary Innovation Team Project ; CAS Key Research Program of Frontier Sciences[QYZDJ-SSW-JSC019] ; CAS Strategic Priority Research Program[XDB22040401]
WOS关键词	CONTACT LINE ; SURFACE ; ANGLE ; CONDENSATION ; HYSTERESIS ; RESISTANCE ; TRANSPORT ; LIQUIDS
WOS研究方向	Chemistry
语种	英语
WOS记录号	WOS:000481566500057
资助机构	National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) through CAS Interdisciplinary Innovation Team Project ; CAS Key Research Program of Frontier Sciences ; CAS Strategic Priority Research Program
其他责任者	Zhao, Ya-Pu
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/79730]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Wang ZL,Lin K,Zhao YP. The effect of sharp solid edges on the droplet wettability[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2019,552:563-571.
APA	王占龙,林岿,&赵亚溥.(2019).The effect of sharp solid edges on the droplet wettability.JOURNAL OF COLLOID AND INTERFACE SCIENCE,552,563-571.
MLA	王占龙,et al."The effect of sharp solid edges on the droplet wettability".JOURNAL OF COLLOID AND INTERFACE SCIENCE 552(2019):563-571.