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)
Corresponding AuthorZhao, Ya-Pu(yzhao@imech.ac.cn)
Source PublicationJOURNAL OF COLLOID AND INTERFACE SCIENCE
2019-09-15
Volume552Pages:563-571
ISSN0021-9797
AbstractUnderstanding 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.
KeywordDroplet wettability Contact angle Sharp edge Contact line pinning
DOI10.1016/j.jcis.2019.05.081
Indexed BySCI ; EI
Language英语
WOS IDWOS:000481566500057
WOS KeywordCONTACT LINE ; SURFACE ; ANGLE ; CONDENSATION ; HYSTERESIS ; RESISTANCE ; TRANSPORT ; LIQUIDS
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
Funding ProjectNational 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]
Funding OrganizationNational 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
Classification二类/Q1
Ranking1
ContributorZhao, Ya-Pu
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/79730
Collection非线性力学国家重点实验室
Recommended Citation
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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