  Colloidal charge in non-polar media is less well understood than its aqueous
counterpart and due to van der Waals forces its study is particularly
challenging in highly confined systems, for which on the other hand large
long-range electrostatic repulsions are heavily screened in aqueous media.
Evidence from videomicroscopy is presented that a model system governed with
surfactant-mediated charging is governed by the steric stabilizer's specific
chemistry.
