Multiscale dynamic wetting of a droplet on a lyophilic pillar-arrayed surface
文献类型：期刊论文
| 作者 | Yuan QZ(袁泉子) ; Zhao YP(赵亚溥)
|
| 刊名 | JOURNAL OF FLUID MECHANICS
 |
| 出版日期 | 2013-02-01 |
| 卷号 | 716页码:171-188 |
| 通讯作者邮箱 | yzhao@imech.ac.cn |
| 关键词 | contact lines drops micro-/nano-fluid dynamics |
| ISSN号 | 0022-1120 |
| 产权排序 | [Yuan, Quanzi; Zhao, Ya-Pu] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| 通讯作者 | Zhao, YP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
| 中文摘要 | Dynamic wetting of a droplet on lyophilic pillars was explored using a multiscale combination method of experiments and molecular dynamics simulations. The excess lyophilic area not only provided excess driving force, but also pinned the liquid around the pillars, which kept the moving contact line in a dynamic balance state every period of the pillars. The flow pattern and the flow field of the droplet on the pillar-arrayed surface, influenced by the concerted effect of the liquid-solid interactions and the surface roughness, were revealed from the continuum to the atomic level. Then, the scaling analysis was carried out employing molecular kinetic theory. Controlled by the droplet size, the density of roughness and the pillar height, two extreme regimes were distinguished, i.e. R similar to t(1/3) for the rough surface and R similar to t(1/7) for the smooth surface. The scaling laws were validated by both the experiments and the simulations. Our results may help in understanding the dynamic wetting of a droplet on a pillar-arrayed lyophilic substrate and assisting the future design of pillar-arrayed lyophilic surfaces in practical applications. |
| 学科主题 | 物理力学 |
| 分类号 | 一类 |
| 类目[WOS] | Mechanics ; Physics, Fluids & Plasmas |
| 研究领域[WOS] | Mechanics ; Physics |
| 关键词[WOS] | MICROPILLAR ARRAYS ; MOLECULAR-DYNAMICS ; INTERIOR CORNER ; VISCOUS-FLOW ; LIQUIDS ; WATER |
| 收录类别 | SCI ; EI |
| 资助信息 | This work was jointly supported by the National Natural Science Foundation of China (NSFC, Grant 11202213 and 11072244), the Key Research Program of the Chinese Academy of Sciences (Grant KJZD-EW-M01) and the Instrument Developing Project of the Chinese Academy of Sciences (Grant Y2010031). |
| 原文出处 | http://dx.doi.org/10.1017/jfm.2012.539 |
| 语种 | 英语 |
| WOS记录号 | WOS:000314422800022 |
| 公开日期 | 2013-03-07 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/47023]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Yuan QZ,Zhao YP. Multiscale dynamic wetting of a droplet on a lyophilic pillar-arrayed surface[J]. JOURNAL OF FLUID MECHANICS,2013,716:171-188. |
| APA | Yuan QZ,&Zhao YP.(2013).Multiscale dynamic wetting of a droplet on a lyophilic pillar-arrayed surface.JOURNAL OF FLUID MECHANICS,716,171-188. |
| MLA | Yuan QZ,et al."Multiscale dynamic wetting of a droplet on a lyophilic pillar-arrayed surface".JOURNAL OF FLUID MECHANICS 716(2013):171-188. |
入库方式： OAI收割
来源：力学研究所
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