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Review
The apparent hydrodynamic slip of polymer solutions and its implications in electrokinetics
Article first published online: 13 FEB 2013
DOI: 10.1002/elps.201200476
© 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Additional Information
How to Cite
Berli, C. L. A. (2013), The apparent hydrodynamic slip of polymer solutions and its implications in electrokinetics. ELECTROPHORESIS, 34: 622–630. doi: 10.1002/elps.201200476
Publication History
- Issue published online: 12 MAR 2013
- Article first published online: 13 FEB 2013
- Accepted manuscript online: 19 DEC 2012 02:08AM EST
- Manuscript Accepted: 6 DEC 2012
- Manuscript Revised: 5 DEC 2012
- Manuscript Received: 31 AUG 2012
Funded by
- CONICET. Grant Number: PIP 0317
- Universidad Nacional del Litoral. Grant Number: CAI+D 65/328
- Argentina
- Abstract
- Article
- References
- Cited By
Keywords:
- Apparent slip;
- Energy conversion;
- EOF of polymers;
- Microfluidics;
- Wall depletion
The apparent hydrodynamic slip of polymer solutions is a result of polymer depletion at channel walls, and its fluid dynamic effects are well known. This work reviews the evidences of apparent slip in electrokinetics, and discusses practical consequences in the following fields: (i) electrokinetic transport of polymer solutions in microchannels, which is of interest for the design and operation of microfluidic chips, particularly for electrophoresis; (ii) electroosmotic pumping, where it has been observed that the employment of polymer solutions greatly enhances the output pressure; and (iii) electrokinetic energy conversion, where the apparent slip also contributes to improve the conversion efficiency. In all cases, critical discussions are taken from basic physical concepts.