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Twin-plate electrowetting for efficient digital microfluidics
- Authors
- Chang, Jong-Hyeon; Pak, James Jungho
- Issue Date
- 15-12월-2011
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Digital microfluidics; Electrowetting configurations; Twin-plate electrowetting; Electrowetting force; Low-voltage electrowetting
- Citation
- SENSORS AND ACTUATORS B-CHEMICAL, v.160, no.1, pp.1581 - 1585
- Indexed
- SCIE
SCOPUS
- Journal Title
- SENSORS AND ACTUATORS B-CHEMICAL
- Volume
- 160
- Number
- 1
- Start Page
- 1581
- End Page
- 1585
- ISSN
- 0925-4005
- Abstract
- This paper describes a twin-plate electrowetting configuration for efficient digital microfluidics. In the twin-plate configuration, the electrowetting force doubles compared to a standard two plate configuration because the chord length of the effective three-phase contact line increases 2-fold with the grounded liquid droplet. For the realization of a twin-plate electrowetting device, two identical ground-type single-plate devices were attached with a gap after aligning their control electrode arrays facing each other. As a result, the twin-plate electrowetting device showed significantly faster droplet velocity than that of the two-plate device, and the required voltage to obtain the same velocity reduced down to between 70% and 80% compared to that of the two-plate device. (C) 2011 Elsevier B.V. All rights reserved.
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