Published December 4, 2019
| Version v1
Publication
Pumping of liquids with traveling-wave electroosmosis
Description
Net flow of electrolyte induced by a traveling-wave electric potential applied to an array of
microelectrodes is reported. Two fluid flow regimes have been observed: at small-voltage
amplitudes the fluid flow follows the direction of the traveling wave, and at higher-voltage
amplitudes the fluid flow is reversed. In both cases, the flow seems to be driven at the level of the
electrodes. The experiments have been analyzed with a linear electroosmotic model based upon the
Debye–Huckel theory of the double layer. The electrical problem for the experimental interdigitated
electrode array is solved numerically using a truncated Fourier series. The observations at low
voltages are in qualitative accordance with the electroosmotic model.
Abstract
Dirección General de Ciencia y Tecnología. Gobierno de España-BFM2003-01739Additional details
Identifiers
- URL
- https://idus.us.es/handle//11441/90708
- URN
- urn:oai:idus.us.es:11441/90708