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Statics and dynamics of electrowetting on pillar-arrayed surfaces at nanoscale
Yuan QZ(袁泉子); Zhao YP(赵亚溥)
Source PublicationNanoscale
2015
Volume7Issue:6Pages:2561-2567
ISSN2040-3364
AbstractThe 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 ηm. 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.
DOI10.1039/C4NR06759B
Indexed BySCI ; EI
Language英语
WOS IDWOS:000349472300048
DepartmentLNM纳/微系统力学与物理力学
Classification一类
Citation statistics
Cited Times:24[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58329
Collection非线性力学国家重点实验室
Recommended Citation
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.
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