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 language | English |
|---|---|
| Article number | 214102 |
| Journal | Applied Physics Letters |
| Volume | 105 |
| Issue number | 21 |
| DOIs | |
| Publication status | Published - 2014 Nov 24 |
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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 journal › Article
}
TY - JOUR
T1 - Effect of viscosity, electrical conductivity, and surface tension on direct-current-pulsed drop-on-demand electrohydrodynamic printing frequency
AU - An, Seongpil
AU - Lee, Min Wook
AU - Kim, Na Young
AU - Lee, Changmin
AU - Al-Deyab, Salem S.
AU - James, Scott C.
AU - Yoon, Suk Goo
PY - 2014/11/24
Y1 - 2014/11/24
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84912143742&partnerID=8YFLogxK
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U2 - 10.1063/1.4902241
DO - 10.1063/1.4902241
M3 - Article
VL - 105
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 21
M1 - 214102
ER -