Abstract
Canonical Monte Carlo simulations of the interaction between a uniformly charged spherical particle and a discretely charged planar surface in solutions of symmetric and asymmetric electrolytes were performed. To assess the nature of the interactions, the force exerted on the colloidal particle perpendicular to the planar surface was calculated. Attractive minima in the interaction force between the similarly charged surfaces reveal the occurrence of two phenomena: long-range attraction of electrostatic origin and short-range attraction due to depletion effects. The degree of electrostatic coupling determines the magnitude and range of like-charge attraction between the two surfaces.
| Original language | English |
|---|---|
| Article number | 054716 |
| Journal | Journal of Chemical Physics |
| Volume | 125 |
| Issue number | 5 |
| DOIs | |
| State | Published - 2006 |
Funding
Support for this work was provided by the Office of Basic Energy Sciences, Division of Chemical Sciences, U.S. Department of Energy under Contract No. DE-AC05-00OR22725 with UT-Battelle, LLC. The authors are thankful to the High Performance Computing Center at the Georgia Institute of Technology, especially to Dr. Muhammed Shaikh, for the computational resources used in this work. Finally, the authors would like to recognize the work of Dr. Marsha Savage in editing the manuscript.
| Funders | Funder number |
|---|---|
| Division of Chemical Sciences | |
| Office of Basic Energy Sciences | |
| U.S. Department of Energy |