Colloidal clay in water suspensions are known to exhibit a multitude of bulk phases
depending on initial colloidal concentration and ionic strength, and examples of this include
repulsive Wigner colloidal glasses at low ionic strength and attractive gels at higher ionic
strength due to screened electrostatic forces by the electrolyte. From confocal Raman
microscopy combined with elasticity measurements, we infer that clay trapped at quasi two-
dimensional interfaces between oil and water also exhibit confined glass-like or gel-like …