Understanding fluid mechanics within electrokinetically pumped microfluidic chips

Author

Qiu, X. Charmaine ; Hu, Lianguang ; Masliyah, Jacob H. ; Harrison, D. Jed

Author_Institution

Dept. of Chem., Alberta Univ., Edmonton, Alta., Canada

Volume

2

fYear

1997

fDate

16-19 Jun 1997

Firstpage

923

Abstract

A model describing electroosmotic fluid pumping within glass microchannels is presented. Results of calculations of fluid flow within a manifold of intersecting channels are compared with experimental observations. The effect of channel length on leakage effects at electrokinetically controlled, valveless intersections is examined. The influence of changing the surface charge potential in one channel but not another is shown to be critical to flow behavior, both theoretically and experimentally

Keywords

Navier-Stokes equations; channel flow; electrokinetic effects; electrophoresis; fluidic devices; osmosis; surface potential; channel length; electrokinetically controlled valveless intersections; electrokinetically pumped microfluidic chips; electroosmotic fluid pumping; fluid flow; fluid mechanics; glass microchannels; intersecting channels; leakage effects; surface charge potential; Boundary conditions; Electrokinetics; Glass; Jacobian matrices; Laplace equations; Manifolds; Microfluidics; Navier-Stokes equations; Poisson equations; Pumps;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid State Sensors and Actuators, 1997. TRANSDUCERS '97 Chicago., 1997 International Conference on

Conference_Location

Chicago, IL

Print_ISBN

0-7803-3829-4

Type

conf

DOI

10.1109/SENSOR.1997.635253

Filename

635253