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Proceedings Paper

Electrohydrodynamic modeling and simulation and its application to digital microfluidics
Author(s): Jun Zeng
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Paper Abstract

Digital microfluidics is the second-generation lab-on-a-chip architecture based upon micromanipulation of droplets via a programmed external electric field by an individually addressable electrode array. Dielectrophoresis (DEP) and electrowetting-on-dielectric (EWOD) are of the dominant operating principles. The microfluidic mechanics of manipulating electrified droplets are complex and not entirely understood. In this article, EWOD and DEP are analyzed both analytically and numerically under a unified framework of droplet electrohydrodynamics (EHD). The numerical simulations based on droplet EHD are first validated against analytical and experimental results and have achieved a good agreement both quantitatively and qualitatively. Simulations are then used extensively in this article to illustrate device operation, to expose underlying physics, and to confirm our conclusions.

Paper Details

Date Published: 8 December 2004
PDF: 18 pages
Proc. SPIE 5591, Lab-on-a-Chip: Platforms, Devices, and Applications, (8 December 2004); doi: 10.1117/12.581959
Show Author Affiliations
Jun Zeng, Coventor, Inc. (United States)


Published in SPIE Proceedings Vol. 5591:
Lab-on-a-Chip: Platforms, Devices, and Applications
Linda A. Smith; Daniel Sobek, Editor(s)

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