Dynamic spreading on pillar-arrayed surfaces: Viscous resistance versus molecular friction

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	Dynamic spreading on pillar-arrayed surfaces: Viscous resistance versus molecular friction
	Yuan QZ(袁泉子); Huang XF(黄先富); Zhao YP(赵亚溥); Zhao, YP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
发表期刊	PHYSICS OF FLUIDS
	2014-09
卷号	26 期号:9 页码:92104
ISSN	1070-6631
摘要	The dynamic spreading of a liquid droplet on micropillar-arrayed surfaces is experimentally investigated. A theoretical model is proposed to include energy dissipations raised from both the viscous resistance at mesoscale and the molecular friction at microscale in the triple-phase region. The scaling laws and spreading shape of the droplet change with the variation of the liquid viscosity because of the competition between these two mechanisms of energy dissipations at the moving contact line. The Laplace pressures at the interior corner and at the wavy contact line are the answers to the excess driving energy and the superwetting on pillar-arrayed surfaces. The formation and evolution of the bulk and the fringe are also analyzed in detail. Our results may help to understand the wetting dynamics on microtextured surfaces and assist the future design of engineered surfaces in practical applications. (C) 2014 AIP Publishing LLC.
学科领域	Mechanics ; Physics
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000342852400023
项目资助者	This work was jointly supported by the National Natural Science Foundation of China (NSFC, Grant Nos. 11202213 and 11372313), the Key Research Program of the Chinese Academy of Sciences (Grant No. KJZD-EW-M01), and the Instrument Developing Project of the Chinese Academy of Sciences (Grant No. Y2010031).
课题组名称	LNM纳/微系统力学与物理力学
论文分区	一类/力学重要期刊
引用统计	被引频次：64[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/49317
专题	非线性力学国家重点实验室
通讯作者	Zhao, YP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
推荐引用方式 GB/T 7714	Yuan QZ,Huang XF,Zhao YP,et al. Dynamic spreading on pillar-arrayed surfaces: Viscous resistance versus molecular friction[J]. PHYSICS OF FLUIDS,2014,26,9,:92104.
APA	Yuan QZ,Huang XF,Zhao YP,&Zhao, YP .(2014).Dynamic spreading on pillar-arrayed surfaces: Viscous resistance versus molecular friction.PHYSICS OF FLUIDS,26(9),92104.
MLA	Yuan QZ,et al."Dynamic spreading on pillar-arrayed surfaces: Viscous resistance versus molecular friction".PHYSICS OF FLUIDS 26.9(2014):92104.

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