A robust and inexpensive composite insulation layer for digital microfluidic devices

	A robust and inexpensive composite insulation layer for digital microfluidic devices
	Yang, Ning 1,2; Liu, Xianming 2,3; Zhang, Xulang 2,3; Lin, Bingcheng 2,3; Yin, Heng 2; Kou, Zinong 1; Ding, Yan 1; Zhu, Jingbo 1
刊名	sensors and actuators a-physical
	2014-11-01
卷号	219 期号:1 页码:6-12
关键词	Digital microfluidics EWOD Electromechanical model Robustness
通讯作者	刘显明 ; jingbozhu
英文摘要	digital microfluidics is a plausible platform for manipulation of discrete droplets, which are driven by electrowetting and dielectrophoretic forces. increasing the sustainability of dmf chips while reducing their fabrication cost would be attractive to research on droplet-based micro-actuators. here, we report a new robust composite layer, with which a broad range of its operation voltage of dmf chips was demonstrated, covering from 30v, which was 25v below the theoretical value predicted with scaling model that derived from d/epsilon, to at least 350 v with a minimum dispensing voltage at 100 v. also, a lifetime of at least 5000 continuous cycles at 110 volts was achieved. deposition of such a composite layer was solely accomplished with a low-cost spincoater, instead of expensive vapour deposition instruments. and the materials we used were cheap as well. the electromechanical force, which was expressed in separate terms of electrowetting force and dielectrophoretic force on a droplet, in six chips with different values of d/epsilon were calculated and compared. the result from our calculation showed that, differently from low-d/epsilon dmf chips, there was considerable electrowetting factor among the electromechanical force in the high-d/epsilon dmf chips and it may be the cause that the initial apparent actuation voltage was much lower than theoretical threshold actuation voltage. (c) 2014 published by elsevier b.v.
学科主题	物理化学
WOS标题词	science & technology ; technology
类目[WOS]	engineering, electrical & electronic ; instruments & instrumentation
研究领域[WOS]	engineering ; instruments & instrumentation
关键词[WOS]	electrowetting-based actuation ; wetting transitions ; liquid droplets ; chemistry ; feedback ; system ; chip
收录类别	SCI
语种	英语
WOS记录号	WOS:000343354700002
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/144149]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Dalian Polytech Univ, Sch Food Sci & Technol, Dalian, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian, Peoples R China 3.Res Ctr Lab Chip, Dalian, Peoples R China
推荐引用方式 GB/T 7714	Yang, Ning,Liu, Xianming,Zhang, Xulang,et al. A robust and inexpensive composite insulation layer for digital microfluidic devices[J]. sensors and actuators a-physical,2014,219(1):6-12.
APA	Yang, Ning.,Liu, Xianming.,Zhang, Xulang.,Lin, Bingcheng.,Yin, Heng.,...&Zhu, Jingbo.(2014).A robust and inexpensive composite insulation layer for digital microfluidic devices.sensors and actuators a-physical,219(1),6-12.
MLA	Yang, Ning,et al."A robust and inexpensive composite insulation layer for digital microfluidic devices".sensors and actuators a-physical 219.1(2014):6-12.