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Theoretical analysis for dynamic contact angle hysteresis on chemically patterned surfaces
Xu, Xianmin1; Wang, Xiaoping2
2020-11-01
Source PublicationPHYSICS OF FLUIDS
ISSN1070-6631
Volume32Issue:11Pages:10
AbstractA dynamic wetting problem is studied for a moving thin fiber inserted in fluid and with a chemically inhomogeneous surface. A reduced model is derived for contact angle hysteresis by using the Onsager principle as an approximation tool. The model is simple and captures the essential dynamics of the contact angle. From this model, we derive an upper bound of the advancing contact angle and a lower bound of the receding angle, which are verified by numerical simulations. The results are consistent with the quasi-static results. The model can also be used to understand the asymmetric dependence of the advancing and receding contact angles on the fiber velocity, which was observed recently in the physical experiments reported in the work of Guan et al. ["Asymmetric and speed-dependent capillary force hysteresis and relaxation of a suddenly stopped moving contact line," Phys. Rev. Lett. 116, 066102 (2016)].
DOI10.1063/5.0027747
Indexed BySCI
Language英语
Funding ProjectNSFC[DMS-11971469] ; National Key R&D Program of China[2018YFB0704304] ; National Key R&D Program of China[2018YFB0704300]
WOS Research AreaMechanics ; Physics
WOS SubjectMechanics ; Physics, Fluids & Plasmas
WOS IDWOS:000589618000002
PublisherAMER INST PHYSICS
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Document Type期刊论文
Identifierhttp://ir.amss.ac.cn/handle/2S8OKBNM/52486
Collection中国科学院数学与系统科学研究院
Corresponding AuthorXu, Xianmin
Affiliation1.Chinese Acad Sci, Acad Math & Syst Sci, NCMIS, ICMSEC,LSEC, Beijing 100190, Peoples R China
2.Hong Kong Univ Sci & Technol, Dept Math, Kowloon, Clear Water Bay, Hong Kong, Peoples R China
Recommended Citation
GB/T 7714
Xu, Xianmin,Wang, Xiaoping. Theoretical analysis for dynamic contact angle hysteresis on chemically patterned surfaces[J]. PHYSICS OF FLUIDS,2020,32(11):10.
APA Xu, Xianmin,&Wang, Xiaoping.(2020).Theoretical analysis for dynamic contact angle hysteresis on chemically patterned surfaces.PHYSICS OF FLUIDS,32(11),10.
MLA Xu, Xianmin,et al."Theoretical analysis for dynamic contact angle hysteresis on chemically patterned surfaces".PHYSICS OF FLUIDS 32.11(2020):10.
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