Quantification of electrical field-induced flow reversal in a microchannel

Share/Save/Bookmark

Pirat, C. and Naso, A. and Wouden van der, E.J. and Gardeniers, J.G.E. and Lohse, D. and Berg van den, A. (2008) Quantification of electrical field-induced flow reversal in a microchannel. Lab on a Chip, 8 (6). pp. 945-949. ISSN 1473-0197

[img]PDF
Restricted to UT campus only
: Request a copy
298Kb
Abstract:We characterize the electroosmotic flow in a microchannel with field effect flow control. High
resolution measurements of the flow velocity, performed by micro particle image velocimetry,
evidence the flow reversal induced by a local modification of the surface charge due to the
presence of the gate. The shape of the microchannel cross-section is accurately extracted from
these measurements. Experimental velocity profiles show a quantitative agreement with numerical
results accounting for this exact shape. Analytical predictions assuming a rectangular
cross-section are found to give a reasonable estimate of the velocity far enough from the walls.
Item Type:Article
Copyright:© 2008 Royal Society of Chemistry
Faculty:
Electrical Engineering, Mathematics and Computer Science (EEMCS)
Science and Technology (TNW)
Research Group:
Link to this item:http://purl.utwente.nl/publications/62377
Official URL:http://dx.doi.org/10.1039/b802800a
Export this item as:BibTeX
EndNote
HTML Citation
Reference Manager

 

Repository Staff Only: item control page

Metis ID: 247752