TY - JOUR
T1 - Modeling of sessile droplet oscillation on electrohydrodynamic jetting nozzle at constant back pressure
AU - Yang, Jungkeun
AU - Kim, Ho
AU - Cho, Baekhyun
AU - Chung, Jaewon
N1 - Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (NRF-2009-0077558).
PY - 2014/7
Y1 - 2014/7
N2 - In this study, we present a theoretical model for an oscillating meniscus along with changing the volume of the sessile droplet on the electrohydrodynamic nozzle under various voltage waveforms, supported by experimental data. The transient volume change of the sessile droplet upon step electric pressure was modeled by a one-dimensional flow. The meniscus oscillation upon cyclic electric pressure was analyzed by a harmonic oscillator model. By combining these two models, the behavior of the sessile droplet, under a bi-directional square voltage pulse train with a different bias voltage, was analyzed. It is expected that this theoretical model can provide effective information in optimizing the voltage waveform for drop-on-demand electrohydrodynamic jetting.
AB - In this study, we present a theoretical model for an oscillating meniscus along with changing the volume of the sessile droplet on the electrohydrodynamic nozzle under various voltage waveforms, supported by experimental data. The transient volume change of the sessile droplet upon step electric pressure was modeled by a one-dimensional flow. The meniscus oscillation upon cyclic electric pressure was analyzed by a harmonic oscillator model. By combining these two models, the behavior of the sessile droplet, under a bi-directional square voltage pulse train with a different bias voltage, was analyzed. It is expected that this theoretical model can provide effective information in optimizing the voltage waveform for drop-on-demand electrohydrodynamic jetting.
KW - Drop-on-demand (DOD)
KW - Electrohydrodynamic (EHD)
KW - Harmonic oscillation
KW - One dimensional flow
KW - Oscillation
KW - Printing
KW - Resonance
KW - Sessile droplet
UR - http://www.scopus.com/inward/record.url?scp=84904878294&partnerID=8YFLogxK
U2 - 10.1007/s12206-014-0635-z
DO - 10.1007/s12206-014-0635-z
M3 - Article
AN - SCOPUS:84904878294
SN - 1738-494X
VL - 28
SP - 2815
EP - 2823
JO - Journal of Mechanical Science and Technology
JF - Journal of Mechanical Science and Technology
IS - 7
ER -