| Soft Wetting: Droplet Receding Contact Angles on Soft Superhydrophobic Surfaces | |
Jiang, Youhua; Xu, Zhijia; Li, Bin ; Li, Juan; Guan DS(关东石)
| |
| Corresponding Author | Jiang, Youhua([email protected]) |
| Source Publication | LANGMUIR
 |
| 2023-10-19 | |
| Volume | 39Issue:43Pages:15401-15408 |
| ISSN | 0743-7463 |
| Abstract | Despite intensive investigations on the droplet receding contact angle on superhydrophobic surfaces, i.e., a key parameter characterizing surface wettability and adhesion, the quantitative correlation between the surface structure mechanical properties (softness) and the droplet receding contact angles remains vague. By systematically varying the geometric dimensions and mechanical properties of soft pillar arrays, we find that the droplet receding contact angles decrease with the decrease in the pillar spring constant. Most surprisingly, the densely packed pillar arrays may result in larger receding contact angles than those on sparsely packed pillars, opposing the understanding of rigid pillar arrays, where the receding contact angles increase with a decrease in the packing density of pillars. This is attributed to the collective effects of capillarity and elasticity, where the energy consumed by the sliding contact line, the energy stored in the distorted liquid-vapor interface, and the energy stored in the deflected pillar contribute to the droplet depinning characteristics. We develop an analytical model to predict the droplet receding contact angles on soft superhydrophobic pillar arrays with knowledge of the material intrinsic receding contact angle, the pillar geometry, and the pillar mechanical properties. The predictions are corroborated by the experimental data measured in this and prior studies. |
| DOI | 10.1021/acs.langmuir.3c02667 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001094333300001 |
| WOS Keyword | HYSTERESIS ; CASSIE ; ELASTOCAPILLARITY ; TENSION ; WENZEL |
| WOS Research Area | Chemistry ; Materials Science |
| WOS Subject | Chemistry, Multidisciplinary ; Chemistry, Physical ; Materials Science, Multidisciplinary |
| Funding Project | National Natural Science Foundation of China[12202108] ; National Natural Science Foundation of China[11972351] ; Guangdong Basic and Applied Basic Research Foundation[2021A1515110184] ; Guangdong Basic and Applied Basic Research Foundation[2022A1515011214] ; Guangdong Basic and Applied Basic Research Foundation[2021B0301030005] ; Opening fund of State Key Laboratory of Nonlinear Mechanics |
| Funding Organization | National Natural Science Foundation of China ; Guangdong Basic and Applied Basic Research Foundation ; Opening fund of State Key Laboratory of Nonlinear Mechanics |
| Classification | 二类 |
| Ranking | 3+ |
| Contributor | Jiang, Youhua |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/93353 |
| Collection | 非线性力学国家重点实验室 |
| Recommended Citation GB/T 7714 | Jiang, Youhua,Xu, Zhijia,Li, Bin,et al. Soft Wetting: Droplet Receding Contact Angles on Soft Superhydrophobic Surfaces[J]. LANGMUIR,2023,39,43,:15401-15408.Rp_Au:Jiang, Youhua |
| APA | Jiang, Youhua,Xu, Zhijia,Li, Bin,Li, Juan,&关东石.(2023).Soft Wetting: Droplet Receding Contact Angles on Soft Superhydrophobic Surfaces.LANGMUIR,39(43),15401-15408. |
| MLA | Jiang, Youhua,et al."Soft Wetting: Droplet Receding Contact Angles on Soft Superhydrophobic Surfaces".LANGMUIR 39.43(2023):15401-15408. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp2023Fa286.pdf（2850KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment