Perforation of thin liquid films under the action of a nonuniform electric field

A non-stationary electrohydrodynamic model has been developed to describe the behavior of a dielectric liquid film on the electrode surface in the surrounding gas. It has been shown that the application of a nonuniform electric field can lead to perforation of the film with the formation of new contact lines. Field nonuniformity was produced using a round insulating insert at the center of the lower electrode. The perforation process is determined by the electric field strength, film thickness, the radius of the non-conductive insert, and the contact angle between the liquid and the solid substrate.