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学科主题: 物理化学
题名: A robust and inexpensive composite insulation layer for digital microfluidic devices
作者: Yang, Ning1, 2;  Liu, Xianming2, 3;  Zhang, Xulang2, 3;  Lin, Bingcheng2, 3;  Yin, Heng2;  Kou, Zinong1;  Ding, Yan1;  Zhu, Jingbo1
通讯作者: 刘显明 ;  JingboZhu
关键词: Digital microfluidics ;  EWOD ;  Electromechanical model ;  Robustness
刊名: SENSORS AND ACTUATORS A-PHYSICAL
发表日期: 2014-11-01
DOI: 10.1016/j.sna.2014.06.004
卷: 219, 期:1, 页:6-12
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Engineering, Electrical & Electronic ;  Instruments & Instrumentation
研究领域[WOS]: Engineering ;  Instruments & Instrumentation
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.
关键词[WOS]: ELECTROWETTING-BASED ACTUATION ;  WETTING TRANSITIONS ;  LIQUID DROPLETS ;  CHEMISTRY ;  FEEDBACK ;  SYSTEM ;  CHIP
语种: 英语
WOS记录号: WOS:000343354700002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/144149
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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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

Recommended Citation:
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.
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