Understanding the lateral movement of particles adsorbed at a solid-liquid interface.

In this paper we study the phenomenon of lateral movement of particles that are electrostatically adsorbed at a solid-liquid interface. The experimental system involves negatively charged silica particles of two different sizes (65 nm and 90 nm) that are exposed to the positively charged solid surface (silane coated silicon wafer) in sequential steps. The particle-adsorbed wafers are analyzed under a scanning electron microscope and the images are processed to determine the pair-correlation function for the particles adsorbed in the first step.

Influence of particle/solid surface zeta potential on particle adsorption kinetics.

In this paper we attempt to understand monolayer formation of spherical particles on a solid surface immersed in a suspension and driven by electrostatic interaction force. The study focuses on the theoretical aspects of the particle adsorption and modeling work based on the random sequential adsorption (RSA) approach is done in order to describe the particle adsorption kinetics and the saturation coverage. The theoretical model is then compared with experimental data obtained under conditions similar to those of the modeling work.