Universal reduction of pressure between charged surfaces by longwavelength surface charge modulation
Abstract
We predict theoretically that longwavelength surface charge modulations universally reduce the pressure between the charged surfaces with counterions compared with the case of uniformly charged surfaces with the same average surface charge density. The physical origin of this effect is the fact that surface charge modulations always lead to enhanced counterion localization near the surfaces, and hence, fewer charges at the midplane. We confirm the last prediction with Monte Carlo simulations.
 Publication:

EPL (Europhysics Letters)
 Pub Date:
 November 2002
 DOI:
 10.1209/epl/i2002002642
 arXiv:
 arXiv:condmat/0210291
 Bibcode:
 2002EL.....60..629L
 Keywords:

 82.70.y;
 61.20.Qg;
 Disperse systems;
 complex fluids;
 Structure of associated liquids: electrolytes molten salts etc.;
 Condensed Matter  Soft Condensed Matter;
 Condensed Matter  Statistical Mechanics
 EPrint:
 8 pages 1 figure, Europhys. Lett., in press