Spontaneous formation of charge inhomogeneity on silica surface immersed in water
by Zhoushen Huang
vii, 30 leaves : ill. ; 30 cm
The dipolar mechanism of long range like-charge attraction between colloidal particles in aqueous solution depends on the inhomogeneity of their surface charge distribution. We propose a computational model compatible with the mean field theory (Gouy-Chapman-Stern model) that can be used to study the effect of short range lateral interaction among surface groupheads on the formation of charge inhomogeneity during the dissociation process. From this model, it seems that when lateral interaction is taken into account, charge inhomogeneity is common in the presence of weak impurity potential about a few kBT, which by itself has no such effect.
Permanent URL for this record: https://lbezone.hkust.edu.hk/bib/b987318