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

Jungkeun Yang, Ho Kim, Baekhyun Cho, Jaewon Chung

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)2815-2823
Number of pages9
JournalJournal of Mechanical Science and Technology
Issue number7
Publication statusPublished - 2014 Jul

Bibliographical note

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).


  • Drop-on-demand (DOD)
  • Electrohydrodynamic (EHD)
  • Harmonic oscillation
  • One dimensional flow
  • Oscillation
  • Printing
  • Resonance
  • Sessile droplet

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering


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