Knowledge Management System of Institue of Mechanics, CAS
| 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.
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| Source Publication | Journal of Physics D-Applied Physics
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| 2008 | |
| ISSN | 0022-3727 |
| Abstract | 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. |
| Keyword | Electrowetting-based Actuation Polydimethylsiloxane Pdms Microfluidic Devices Liquid Droplets Films Wettability Discharges Recovery Exposure |
| DOI | 10.1088/0022-3727/41/5/052004 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000254153800004 |
| WOS Keyword | ELECTROWETTING-BASED ACTUATION ; POLYDIMETHYLSILOXANE PDMS ; MICROFLUIDIC DEVICES ; LIQUID DROPLETS ; FILMS ; WETTABILITY ; DISCHARGES ; EXPOSURE ; RECOVERY ; PLASMA |
| WOS Research Area | Physics |
| WOS Subject | Physics, Applied |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/26104 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Zhao, YP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China. |
| Recommended Citation 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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