INVESTIGADORES
BERLI Claudio Luis Alberto
artículos
Título:
The apparent hydrodynamic slip of polymer solutions and its implications in electrokinetics
Autor/es:
CLAUDIO L. A. BERLI
Revista:
ELECTROPHORESIS
Editorial:
WILEY-V C H VERLAG GMBH
Referencias:
Lugar: Weinheim; Año: 2013 vol. 34 p. 622 - 630
ISSN:
0173-0835
Resumen:
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 given from basic physical concepts.
