Figure 8: Silicone oil drop covered simultaneously with PE beads and metallic-coated glass beads.
From: Active structuring of colloidal armour on liquid drops
The applied electric field strength is 250 Vmm−1. The E-field direction is horizontal in the plane of the panels, as indicated by the arrow. The PE beads only form equatorial ribbons, and the metallic-coated particles only form chain-like structures. The dynamic ‘pupil effect’ observed for clay particles (see Fig. 6) cannot be realized for any of these cases in the present experiments. The drop radius is about 1 mm.
