Effect of viscosity, electrical conductivity, and surface tension on direct-current-pulsed drop-on-demand electrohydrodynamic printing frequency

Seongpil An, Min Wook Lee, Na Young Kim, Changmin Lee, Salem S. Al-Deyab, Scott C. James, Suk Goo Yoon

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Experiments were conducted to measure the performance of direct-current-pulsed electrohydrodynamic drop formation as a function of liquid viscosity, electrical conductivity, and surface tension. While hydrodynamic and charge relaxation times and Taylor cone formation frequencies suggest theoretical drop-generation frequencies well in excess of 100 Hz, we show that it is impossible to produce more than 50 drops per second with performance decreasing as viscosity increased or electrical conductivity decreased (and not a significant function of surface tension). Instead of relying on relaxation-time calculations to predict the maximum, reliable drop-production frequency, a dimensionless coefficient that is a function of viscosity and electrical conductivity is proposed to estimate the fulcrum frequency.

Original languageEnglish
Article number214102
JournalApplied Physics Letters
Volume105
Issue number21
DOIs
Publication statusPublished - 2014 Nov 24

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electrohydrodynamics
printing
interfacial tension
direct current
viscosity
electrical resistivity
relaxation time
conductivity
cones
hydrodynamics
coefficients
estimates
liquids

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Effect of viscosity, electrical conductivity, and surface tension on direct-current-pulsed drop-on-demand electrohydrodynamic printing frequency. / An, Seongpil; Lee, Min Wook; Kim, Na Young; Lee, Changmin; Al-Deyab, Salem S.; James, Scott C.; Yoon, Suk Goo.

In: Applied Physics Letters, Vol. 105, No. 21, 214102, 24.11.2014.

Research output: Contribution to journalArticle

An, Seongpil ; Lee, Min Wook ; Kim, Na Young ; Lee, Changmin ; Al-Deyab, Salem S. ; James, Scott C. ; Yoon, Suk Goo. / Effect of viscosity, electrical conductivity, and surface tension on direct-current-pulsed drop-on-demand electrohydrodynamic printing frequency. In: Applied Physics Letters. 2014 ; Vol. 105, No. 21.
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