Скачать или смотреть Electrohydrodynamic printing of a solution with medicinal applications (micro-dripping mode)

In this video clip, electrohydrodynamic (EHD) printing of acetone is shown. In EHD printing, a strong electric field is applied between a nozzle and a grounded electrode. This strong electric field causes to eject jets or droplets with diameters less than the diameter of the nozzle from its tip. Here, a back-pressure was used to bring the fluid to the tip of the nozzle. A pulsed-AC voltage with an amplitude, frequency, and duty cycle of 2 kV, 10 Hz, and 0.5, respectively, was applied to the nozzle. The outer diameter of the nozzle was equal to 260 microns. The distance between the nozzle tip and the grounded electrode was equal to 4 mm. The images from this jetting mode which was micro-dripping were recorded with a frame rate of 8000 fps (the time span between every two consecutive frames is equal to 125 microseconds).