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http://dx.doi.org/10.5407/JKSV.2011.9.2.048

The Experimental Study of EHD Printing for Different Nozzle Shapes  

Kim, Ji-Young (건국대학교 항공우주정보시스템공학과)
Nguyen, Vu Dat (건국대학교 항공우주정보시스템공학과)
Byun, Do-Young (건국대학교 항공우주정보시스템공학과)
Publication Information
Journal of the Korean Society of Visualization / v.9, no.2, 2011 , pp. 48-53 More about this Journal
Abstract
The shape of nozzle cross-section plays an important role in stabilizing electrospray jet. The angle of contact line is governed based on the famous Young-Laplace equation. Compared to a round nozzle that has a constant curvature along the orifice, the square nozzle has four square corner edges and four straight edges that hold the meniscus in a different manner and is of interest in this study. By utilizing both square and round capillary nozzle, we examine the effect of nozzle shape in electrohydrodynamic jetting. The ejections were recorded with a high speed camera and analyzed to examine the jetting repeatability based on dynamic movement of meniscus. The result suggests that if the corner edges are not sharp, then its effect on repeatability is also limited.
Keywords
Electrohydrodynamic; Nozzle shape;
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  • Reference
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