Experimental Observation Of Electrical Instability Of Droplets On Dielectric Layer

doi:10.1088/0022-3727/41/5/052004

IMECH-IR > 力学所知识产出(1956-2008)

	Experimental Observation Of Electrical Instability Of Droplets On Dielectric Layer
	Feng JT(冯江涛); Zhao YP(赵亚溥); Zhao, YP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China.
发表期刊	Journal of Physics D-Applied Physics
	2008
ISSN	0022-3727
摘要	Polydimethylsiloxane ( PDMS) has become the most widely used silicon-based organic polymer in bio-MEMS/NEMS devices. However, the inherent hydrophobic nature of PDMS hinders its wide applications in bio-MEMS/NEMS for efficient transport of liquids. Electrowetting is a useful tool to reduce the apparent contact angle of partially wetting conductive liquids and has been utilized widely in bio-MEMS/NEMS. Our experimental results show that the thin PDMS membranes exhibit good properties in electrowetting-on-dielectric. The electrical instability phenomenon of droplets was observed in our experiment. The sessile droplet lying on the PDMS membrane will lose its stability with the touch of the wire electrode to make the apparent contact angle change suddenly larger than 35 degrees. Contact mode can protect the dielectric layer from electrical breakdown effectively. Electrical breakdown process of dielectric layer was recorded by a high speed camera. It is found experimentally that a PDMS membrane of 4.8 mu m thick will not be destroyed due to the electric breakdown even at 800 V in the contact mode.
关键词	Electrowetting-based Actuation Polydimethylsiloxane Pdms Microfluidic Devices Liquid Droplets Films Wettability Discharges Recovery Exposure
DOI	10.1088/0022-3727/41/5/052004
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000254153800004
关键词[WOS]	ELECTROWETTING-BASED ACTUATION ; POLYDIMETHYLSILOXANE PDMS ; MICROFLUIDIC DEVICES ; LIQUID DROPLETS ; FILMS ; WETTABILITY ; DISCHARGES ; EXPOSURE ; RECOVERY ; PLASMA
WOS研究方向	Physics
WOS类目	Physics, Applied
引用统计	被引频次：23[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/311007/26104
专题	力学所知识产出(1956-2008)
通讯作者	Zhao, YP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Feng JT,Zhao YP,Zhao, YP . Experimental Observation Of Electrical Instability Of Droplets On Dielectric Layer[J]. Journal of Physics D-Applied Physics,2008.
APA	冯江涛,赵亚溥,&Zhao, YP .(2008).Experimental Observation Of Electrical Instability Of Droplets On Dielectric Layer.Journal of Physics D-Applied Physics.
MLA	冯江涛,et al."Experimental Observation Of Electrical Instability Of Droplets On Dielectric Layer".Journal of Physics D-Applied Physics (2008).

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