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Proceedings Paper

Toward microscale flow control using non-uniform electro-osmotic flow
Author(s): Federico Paratore; Evgeniy Boyko; Amir D. Gat; Govind V. Kaigala; Moran Bercovici
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Paper Abstract

We present a novel method that allows establishing desired flow patterns in a Hele-Shaw cell, solely by controlling the surface chemistry, without the use of physical walls. Using weak electrolytes, we locally pattern the chamber's ceiling and/or floor, thus defining a spatial distribution of surface charge. This translates to a non-uniform electric double layer which when subjected to an external electric field applied along the chamber, gives rise to non-uniform electroosmotic flow (EOF). We present the theory that allows prediction and design of such flows fields, as well as experimental demonstrations opening the door to configurable microfluidic devices.

Paper Details

Date Published: 19 February 2018
PDF: 6 pages
Proc. SPIE 10491, Microfluidics, BioMEMS, and Medical Microsystems XVI, 104910P (19 February 2018); doi: 10.1117/12.2300963
Show Author Affiliations
Federico Paratore, IBM Research - Zürich (Switzerland)
Technion - Israel Institute of Technology (Israel)
Evgeniy Boyko, Technion - Israel Institute of Technology (Israel)
Amir D. Gat, Technion - Israel Institute of Technology (Israel)
Govind V. Kaigala, IBM Research - Zürich (Switzerland)
Moran Bercovici, Technion - Israel Institute of Technology (Israel)


Published in SPIE Proceedings Vol. 10491:
Microfluidics, BioMEMS, and Medical Microsystems XVI
Bonnie L. Gray; Holger Becker, Editor(s)

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