Issue |
Europhys. Lett.
Volume 73, Number 6, March 2006
|
|
---|---|---|
Page(s) | 864 - 870 | |
Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
DOI | https://doi.org/10.1209/epl/i2005-10468-4 | |
Published online | 01 February 2006 |
Localisation-delocalisation transition of electrolytes between micro-electrodes
Institut für Theoretische Physik II, Heinrich-Heine-Universität Düsseldorf Universitätsstraße 1, D-40225 Düsseldorf, Germany
Received:
20
October
2005
Accepted:
17
January
2006
Employing computer simulations
and Poisson-Boltzmann theory, we show that a symmetric electrolyte
in an electric condenser undergoes a
localisation-delocalisation transition as a function of the
external voltage U.
The transition occurs at the critical voltage corresponding to
the situation where the surface charge density of the plates equals
the area charge density of completely charge-separated electrolytes.
The average distance of the electrolyte ions to the
plates diverges logarithmically for
.
This transition is expected to be
observable in micro-electrodes.
PACS: 61.20.Qg – Structure of associated liquids: electrolytes, molten salts, etc / 61.20.Ja – Computer simulation of liquid structure / 82.70.Dd – Colloids
© EDP Sciences, 2006
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