NDLI: Resistance of droplets sliding by EWOD actuation

Content Provider	IEEE Xplore Digital Library
Author	Nelson, W. Sen, P. Chang-Jin Kim
Copyright Year	2009
Description	Author affiliation: Mechanical and Aerospace Engineering Department, University of Califormina, Los Angeles (UCLA), USA (Nelson, W.; Sen, P.; Chang-Jin Kim)
Abstract	We report an experimental investigation of the resistive forces imparted on droplets actuated by electrowetting-on-dielectric (EWOD). While the advancing contact angle is always larger than the receding of a droplet moving on a solid surface under conventional actuation means, EWOD actuation is unique because the advancing angle is smaller than the receding. We recorded high-speed videos of sliding droplets under electrowetting to elucidate this seemingly paradoxical contact angle hysteresis. The results indicate a transition point at Ca≈ $10^{−3},$ after which the dominant resistance force becomes strongly speed-and voltage-dependent.
Starting Page	2014
Ending Page	2017
File Size	813464
Page Count	4
File Format	PDF
ISBN	9781424441907
e-ISBN	9781424441938
DOI	10.1109/SENSOR.2009.5285658
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-21
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Voltage Substrates Surface resistance Shape Testing Solids Hysteresis Drag Electrodes Cameras droplet resistance Electrowetting Electrowetting-on-dielectric (EWOD) contact angle dynamic contact angle
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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