Title

A micropump controlled by EWOD: wetting line energy and velocity effects

Authors

Authors

R. Shabani;H. J. Cho

Comments

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Abbreviated Journal Title

Lab Chip

Keywords

MICROFLUIDICS; Biochemical Research Methods; Chemistry, Multidisciplinary; Nanoscience; & Nanotechnology

Abstract

A Laplace pressure gradient between a droplet and a liquid meniscus was utilized to create an on-demand constant flow rate capillary pump. Electrowetting on dielectric was implemented to induce the pressure gradient in the microchannel. For an initial droplet volume of 0.3 mu L and a power of 12 nW a constant flow rate of 0.02 mu L s(-1) was demonstrated. The effects of the wetting line energy on the static contact angle and the wetting line velocity on the dynamic contact angle in the pump operation were studied. Sample loading on-demand could be achieved by regulating an electric potential.

Journal Title

Lab on a Chip

Volume

11

Issue/Number

20

Publication Date

1-1-2011

Document Type

Article

Language

English

First Page

3401

Last Page

3403

WOS Identifier

WOS:000295270100004

ISSN

1473-0197

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