Satellite/spray suppression in electrohydrodynamic printing with a gated head

Appl. Phys. Lett. 103, 133506 (2013)

Sukhan Lee, Kichul An, Sanguk Son, Jaeyong Choi.

College of Information and Communication Engineering, Sungkyunkwan University, 300 CheonCheon-dong, JangAn-Gu, Suwon, Gyeonggi-do 440-746, South Korea.

Abstract

 

During electro-hydrodynamic printing, part of discharged jets may be broken into tiny satellites/sprays, making patterns scattered. This paper presents a method of suppressing these satellites/sprays based on a ring-shaped gate electrode placed in between nozzle and substrate. We discover, by simulation and experimentation, that the maximum satellite/spray suppression can be achieved when the diameter of gate hole and the distance from nozzle to gate are, respectively, about 5, and 2.5 times the outer diameter of nozzle and when the gate voltage applied has a waveform of a negative and positive pulse pair mixed with a fixed gate bias.

© 2013 AIP Publishing LLC

 

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