Figure 2
From: Charging and discharging of single colloidal particles at oil/water interfaces
Attenuation of repulsions among single colloidal particles at oil/water interfaces in absence or presence of NaCl in the water phase.
Time evolutions of pair potentials (U(r)) of polystyrene microspheres trapping at an (a) octane/H2O interface or (b) an octane/10 mM NaCl interface, where symbols or lines represent U(r) or their fitting curves based on equation (1) and (2), colors represent time lapse. (c) Time dependence of three phase contact angles (θ) of polystyrene microspheres trapping at an octane/H2O (red bars) or at an octane/10 mM NaCl (cyan bars) interfaces and their confocal images (d), where blue colors or green lines respectively represent emissions of coumarin in aqueous phase or boundaries determined by finding maximum gradients of intensities.
