IMECH-IR  > 流固耦合系统力学重点实验室
Model of Advancing and Receding Contact Angles on Rough Surfaces
Lei D; Li Y; Lin M(林缅); Wen MG
Corresponding AuthorLi, Yun(yunli@mail.xjtu.edu.cn) ; Lin, Mian(linmian@imech.ac.cn)
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
2019-08-01
Volume123Issue:30Pages:18376-18386
ISSN1932-7447
AbstractContact angle hysteresis is a basic phenomenon in many industrial applications, such as material surface engineering and enhanced oil recovery. The mechanism of continuous change of the contact angle during hysteresis is not well understood and described, and it is also important to predict advancing and receding angles by the Young contact angle and surface roughness. In this work, a contact angle hysteresis model is developed based on several metastable contact angle models. The fraction difference between gas and liquid prefilling the solid grooves is assumed to be variable, so is the fraction difference of gas and liquid displaced by the other phase. Besides these two newly introduced variables, the solid area fraction, the ratio of the real surface area to the projected surface area, and the Young, contact angle together influence the advancing and receding angles. Energy input or work is the external cause of hysteresis. The new variables are the intrinsic cause of hysteresis, enabling the continuous change of the contact angle and ensuring a minimal surface energy during hysteresis. The advancing and receding angles are explicitly expressed in a function of the factors mentioned above. The results from this model are in good coincidence with experiments from the literature. Through comparison, it is found that the model in this paper can be reduced as the Wenzel model, Cassie-Baxter model, etc., under special conditions.
DOI10.1021/acs.jpcc.9b03288
Indexed BySCI ; EI
Language英语
WOS IDWOS:000479326300028
WOS KeywordWETTING HYSTERESIS
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
Funding ProjectNational Natural Science Foundation of China[41574129] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA14010304] ; Major National Science and Technology Special Program of China[2017ZX05037-001]
Funding OrganizationNational Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Major National Science and Technology Special Program of China
Classification二类/Q1
Ranking1
ContributorLi, Yun ; Lin, Mian
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/79751
Collection流固耦合系统力学重点实验室
Recommended Citation
GB/T 7714
Lei D,Li Y,Lin M,et al. Model of Advancing and Receding Contact Angles on Rough Surfaces[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2019,123(30):18376-18386.
APA Lei D,Li Y,林缅,&Wen MG.(2019).Model of Advancing and Receding Contact Angles on Rough Surfaces.JOURNAL OF PHYSICAL CHEMISTRY C,123(30),18376-18386.
MLA Lei D,et al."Model of Advancing and Receding Contact Angles on Rough Surfaces".JOURNAL OF PHYSICAL CHEMISTRY C 123.30(2019):18376-18386.
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