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http://dx.doi.org/10.3807/KJOP.2006.17.4.347

Characterization of Electro-wetting Velocity by Measuring Transmission Intensity  

Park, Seung-Ryong (Micro Optics Laboratory, Department of Physics, Hanyang University)
Song, Seok-Ho (Micro Optics Laboratory, Department of Physics, Hanyang University)
Oh, Cha-Hwan (Micro Optics Laboratory, Department of Physics, Hanyang University)
Kim, Pill-Soo (Micro Optics Laboratory, Department of Physics, Hanyang University)
Oh, Byoung-Do (ISM team, OS Division, SEMCO)
Chung, Sang-Kug (Department of Mechanical Engineering, University of Pittsburgh)
Publication Information
Korean Journal of Optics and Photonics / v.17, no.4, 2006 , pp. 347-353 More about this Journal
Abstract
The electro-wetting effect can be implemented as a fast means to move liquid interfaces. A continuous and numerical method would be required in measurement of electro-wetting liquid interfaces. We propose an /in-situ/ measurement method to characterize the dynamic change in curvature of liquid interfaces. In the proposed method, variation of light intensity transmitted through the liquid interfaces is measured, leading to numerical determination of the liquid curvatures. Experimental results obtained from our efficient method are confirmed by the direct images of a streak camera.
Keywords
Electro-wetting; Real time measurement; Liquid lens;
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