Dielectric Breakdown in Electrowetting-Based Liquid Microactuators

Wei Qiang Wang; Yan Su

doi:10.4028/www.scientific.net/KEM.655.132

Paper Titles

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Dielectric Breakdown in Electrowetting-Based Liquid Microactuators
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Effects of Zr/Ti Ratio on the Electric-Induced Light Scattering Performances of PLZT Transparent Ceramics
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 655Dielectric Breakdown in Electrowetting-Based...

Dielectric Breakdown in Electrowetting-Based Liquid Microactuators

Abstract:

In an electrowetting-based liquid microactuator, two types of insulating materials are used for device operation: an dielectric material to provide capacitance between the liquid and conductor, and a hydrophobic coating at the interface of liquid and insulator. This paper investigates important physical properties for the insulating materials. Several alternative dielectric materials are compared for application in EW chips, breakdown phenomenon of insulating layers with different thicknesses is tested before and after droplet actuation. It appears that the used EW devices have lower breakdown voltages than unused devices, probably due to the locally trapped charges in the insulating layer.

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Proceedings of the International Congress on Ceramics V

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Periodical:

Key Engineering Materials (Volume 655)

Pages:

132-135

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.655.132

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Online since:

July 2015

Authors:

Wei Qiang Wang*, Yan Su

Keywords:

Contact Angle, Dielectric Breakdown, Electrowetting, Microfluidics

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