Effects of the electric field on the overall drop impact on a solid surface
Yü Tian, Zihan Peng, Yanchu Liu, Linsen Di, Ziyi Zhan, Dong Ye, Yin Guan, Xinping Zhou, Weiwei Deng, YongAn Huang
Abstract
Complex electrohydrodynamic behavior occurs during drop impact onto a solid surface under an external electric field. The process can be divided into three stages: (1) deformation of the drop in the electric field prior to contact; (2) initial contact of the drop with the substrate; and (3) the rich postcontact phenomena. Herein we provide a complete physical picture of the entire process of a drop impacting onto the solid surface under an external electric field. The various drop deposition modes are summarized in a phase diagram which sheds light on identifying appropriate electric fields for high-quality drop depositions without air bubble entrapments or jettings.