Figure 3
From: Charging and discharging of single colloidal particles at oil/water interfaces
Discharging and spreading of single colloidal particles at oil/water interfaces.
(a) Fading of residual charges on polystyrene microspheres trapping at oil/water interfaces in presence of different amounts NaCl in the water phase, where solid lines represent their fitting by single exponentially decay and inset of (a) shows their characteristic decay time (τ). Dispersion of particle suspensions containing different amounts of isopropanol ranging from 1 to 20% at an octane/H2O interface: (b) Spinning-disk confocal images acquired with a certain exposure time ranging from 5 to 20 ms (containing 2.5% isopropanol in the suspension), (c) sliding velocities (vj) or radius convection zone (Rc) or sliding distance (d), where the symbol (*) presents that no jets had been observed at the interface.
