Droplet Actuation by Electrowetting within a microchannel

Publish Year: 1394
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

ICOAC01_298

تاریخ نمایه سازی: 9 مرداد 1395

Abstract:

The present study investigates the movement of water drop within a microchannel under electrowetting phenomenon. Electrowetting, by applying boundary (line) stress and the macroscopic variation in the contact angle of the surface, operates according to an electric field in order to manipulate small volumes of liquids. Applied electrostatic fieldmakes the conducting drop to move in the direction of the field. Electrowetting phenomenon simulation has been done by application ofOpenFoam software in Linux operating system and interFoam solver,by using the method of the volume of fluid (VOF). Numerical modelinghas been compared with experimental results has been confirmed, and then has been investigated through three dimensional modeling of themovement of fluid drop in microchannels under electrowetting phenomenon with channel’s different heights effect of temperaturevariation. An increase in microchannel height at fixed volume of water drop causes the velocity of drop to increase. An increase in the watertemperature and in parallel with that reduction in viscosity and surface tension, the velocity of water drop increases as well.

Authors

Omid Izadpanahi

Department of Mechanical Engineering Eqbal Lahoori Institute of Higher Education, Mashhad, Iran

Masoud Hajian

Department of Mechanical Engineering Hakim sabzevari University, Sabzevar, Iran

Mohammad Passandideh-fard

Department of Mechanical Engineering Ferdowsi University of Mashhad, Mashhad, Iran

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