Polymeric surface coatings are widely used to tailor the properties of surfaces. At the microscopic level, polymer layers provide steric stabilisation that gives colloidal stability to a system, while on macroscopic surfaces, polymer brushes have been shown to significantly reduce the friction relative to bare surfaces. Numerical self-consistent field theory calculations predict that two neutral polymer brushes or two like-charged polymer brushes do not interpenetrate when pushed against each other. Conversely, a charged/uncharged system would show a significant degree of interpenetration. In these experiments we will bring an uncharged polymer brush against brushes of various charge densities using our confinement cell. We will interpret the observed structures with reference to colloidal stability in mixed-stabiliser systems and controllable lubrication.