Characteristics of deformation and electrical charging of large water drops immersed in an insulating liquid on the electrode surface

Abstract

Electrical manipulation of charged droplet has attracted much attention owing to its potential applications in various industrial and laboratorial units. In this paper, deformation and electrical charging of large conductive water drops on the electrode surface studied experimentally. Moreover, the quality of drop motion and deformation near the electrode surface discussed in details by performing a precise image processing of the experimental photos. Based on the experimentally extracted drop shapes, the distribution of the electrical charge on the drop surface obtained numerically. The results revealed some important effects of the drop deformation on the amount of the acquired charge on the drop surface, which could be helpful to step forward in design of the electrically driven droplet-based systems.