Modeling of sessile droplet oscillation on electrohydrodynamic jetting nozzle at constant back pressure

High-speed precise cell patterning by pulsed electrohydrodynamic jet printing

“…The short high-voltage pulse releases a droplet (or a finite number of droplets) from the nozzle, while the lower bias needs to ensure that a near conical shaped meniscus is always present, but not discharging any fluid [12,13]. Therefore, the jetting start time can be shortened and the jetting frequency can be maximized [14,15]. After termination of the rectangular voltage pulse, the meniscus may oscillate and recede back to the initial position through oscillation damping time [14].…”

“…Therefore, the jetting start time can be shortened and the jetting frequency can be maximized [14,15]. After termination of the rectangular voltage pulse, the meniscus may oscillate and recede back to the initial position through oscillation damping time [14]. Consequently, for a stable drop-on-demand jetting, the next pulse should be applied after the oscillation damping time.…”