Statics and dynamics of electrowetting on pillar-arrayed surfaces at nanoscale

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Statics and dynamics of electrowetting on pillar-arrayed surfaces at nanoscale
	Yuan QZ(袁泉子); Zhao YP(赵亚溥)
刊名	Nanoscale
	2015
卷号	7 期号:6 页码:2561-2567
ISSN号	2040-3364
中文摘要	The statics and dynamics of electrowetting on pillar-arrayed surfaces at the nanoscale are studied using molecular dynamics simulations. Under a gradually increased electric field, a droplet is pushed by the electromechanical force to spread, and goes through the Cassie state, the Cassie-to-Wenzel wetting transition and the Wenzel state, which can be characterized by the electrowetting number at the microscale η_m. The expansion of the liquid is direction-dependent and influenced by the surface topology. A positive voltage is induced in the bulk droplet, while a negative one is induced in the liquid confined among the pillars, which makes the liquid hard to spread and further polarize. Based on the molecular kinetic theory and the wetting states, theoretical models have been proposed to comprehend the physical mechanisms in the statics and dynamics of electrowetting, and are validated by our simulations. Our findings may help to understand the electrowetting on microtextured surfaces and assist the future design of engineered surfaces in practical applications.
分类号	一类
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000349472300048
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/58329]
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. Statics and dynamics of electrowetting on pillar-arrayed surfaces at nanoscale[J]. Nanoscale,2015,7(6):2561-2567.
APA	Yuan QZ,&Zhao YP.(2015).Statics and dynamics of electrowetting on pillar-arrayed surfaces at nanoscale.Nanoscale,7(6),2561-2567.
MLA	Yuan QZ,et al."Statics and dynamics of electrowetting on pillar-arrayed surfaces at nanoscale".Nanoscale 7.6(2015):2561-2567.