Transient deformation dynamics of particle laden droplets in electric field A Physicochemical and engineering aspects

We study the transient deformation dynamics after application of uniform DC electric fields to particle laden droplets with different polyethylene particle coverage. Presence of interfacial particles result in reduced electrohydrodynamic circulation flows and charge convection, which in turn result in slower transient droplet deformation compared to pure uncovered droplets, and as well to increased steady-state droplet deformation. A prolate-oblate deformation transition is observed immediately after the application of the electric field. This anomaly is not visible or greatly reduced for droplets fully covered by particles.