Electrostatic interaction between colloidal particles trapped at an electrolyte interface

Abstract

The electrostatic interaction between colloidal particles trapped at the interface between two immiscible electrolyte solutions is studied in the limit of small inter-particle distances. Within an appropriate model exact analytic expressions for the electrostatic potential as well as for the surface and line interaction energies are obtained. They demonstrate that the widely used superposition approximation, which is commonly applied to large distances between the colloidal particles, fails qualitatively at small distances and is quantitatively unreliable even at large distances. Our results contribute to an improved description of the interaction between colloidal particles trapped at fluid interfaces.

Submitted

References in corpus (5)

• Direct measurements of the effects of salt and surfactant on interaction forces between colloidal particles at water-oil interfaces
• Effective capillary interaction of spherical particles at fluid interfaces
• Local theory for ions in binary liquid mixtures
• Multipolar expansion of the electrostatic interaction between charged colloids at interfaces
• Electrostatic interaction between colloidal particles trapped at an electrolyte interface

Cited by in corpus (8)

• Interaction of Charged Colloidal Particles at the Air-Water Interface
• Charge symmetry broken complex coacervation
• Mesoscopic electrohydrodynamic simulations of binary colloidal suspensions
• Electrostatic interaction between colloidal particles trapped at an electrolyte interface
• Poisson-Boltzmann study of the effective electrostatic interaction between colloids at an electrolyte interface
• Electrostatic interaction between dissimilar colloids at fluid interfaces
• Electrostatic interaction of particles trapped at fluid interfaces: Effects of geometry and wetting properties
• Electrostatic pair-interaction of nearby metal or metal-coated colloids at fluid interfaces