中国科学院深圳先进技术研究院机构知识库(SIAT OpenIR): Modeling Pressure Stability and Contact Angle Hysteresis of Superlyophobic Surfaces Based on Local Contact Line
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Modeling Pressure Stability and Contact Angle Hysteresis of Superlyophobic Surfaces Based on Local Contact Line
Zhiwei Wang; Tianzhun Wu
2015
Source PublicationJournal of Physical Chemistry C
Subtype期刊论文
AbstractSuperlyophobic surfaces (SLS) are a promising versatile platform for planar microfluidics due to their excellent nonwetting and low flow-resistance performances for almost any liquid; however, for micro fabrication and practical application, the nonwetting performances, especially pressure stability and contact-angle hysteresis (CAH), are vital parameters yet still difficult to predict well. On the basis of the Laplace pressure formulation and the pinning condition on typical overhang surface structures, we obtained a universal expression to calculate the critical transition pressure and hence proposed two dimensionless parameters as criteria for the Cassie–Baxter state. We also propose a new model for the CAH of both water and oil on SLS by introducing contact line fraction. The theoretical predications are well supported by the experimental data on the SLS with microfabricated T-shape microstructures. These achievements on modeling SLS pressure stability and CAH may shed new light for designing SLS with better performances for microfluidics and other fields.
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Indexed BySCI
Language英语
Department医工所微纳系统与仿生医学研究中心
Document Type期刊论文
Identifierhttp://ir.siat.ac.cn/handle/172644/7114
Collection医工所
AffiliationJournal of Physical Chemistry C
Recommended Citation
GB/T 7714
Zhiwei Wang,Tianzhun Wu. Modeling Pressure Stability and Contact Angle Hysteresis of Superlyophobic Surfaces Based on Local Contact Line[J]. Journal of Physical Chemistry C,2015.
APA Zhiwei Wang,&Tianzhun Wu.(2015).Modeling Pressure Stability and Contact Angle Hysteresis of Superlyophobic Surfaces Based on Local Contact Line.Journal of Physical Chemistry C.
MLA Zhiwei Wang,et al."Modeling Pressure Stability and Contact Angle Hysteresis of Superlyophobic Surfaces Based on Local Contact Line".Journal of Physical Chemistry C (2015).
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