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

Title
Effect of viscosity, electrical conductivity, and surface tension on direct current-pulsed drop-on-demand electrohydrodynamic printing frequency
Authors
이민욱Seongpil AnNa Young KimChangmin LeeSalem S. Al-DeyabScott C. JamesSam S. Yoon
Issue Date
2014-11
Publisher
Applied physics letters
Citation
VOL 105, NO 21-214102-5
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.
URI
http://pubs.kist.re.kr/handle/201004/68262
ISSN
0003-6951
Appears in Collections:
KIST Publication > Article
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