Abstract
A pole-type nozzle has an inserted pole that jams a contraction flow into capillary in electrohydrodynamic deposition. The jammed solution improves Taylor cone formation by shortening the hysteresis time so that pole-type nozzle is suitable for high-resolution electrohydrodynamic printing. Experimental results demonstrate a governed frequency-dividing relationship with an integral ratio of applied voltage frequency to droplet deposition frequency. It is observed that low integral frequency ratio is in favor of low voltage amplitude and duty cycle, and high voltage frequency, since polymer solution jets in a small fluidic volume per droplet under low electric force and short pulse duration.
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