The effect of sharp solid edges on the droplet wettability

doi:10.1016/j.jcis.2019.05.081

IMECH-IR > 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)
通讯作者	Zhao, Ya-Pu(yzhao@imech.ac.cn)
发表期刊	JOURNAL OF COLLOID AND INTERFACE SCIENCE
	2019-09-15
卷号	552 页码:563-571
ISSN	0021-9797
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.
关键词	Droplet wettability Contact angle Sharp edge Contact line pinning
DOI	10.1016/j.jcis.2019.05.081
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000481566500057
关键词[WOS]	CONTACT LINE ; SURFACE ; ANGLE ; CONDENSATION ; HYSTERESIS ; RESISTANCE ; TRANSPORT ; LIQUIDS
WOS研究方向	Chemistry
WOS类目	Chemistry, Physical
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]
项目资助者	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
论文分区	二类/Q1
力学所作者排名	1
RpAuthor	Zhao, Ya-Pu
引用统计	被引频次：39[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/79730
专题	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.

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