Journal of the Korean Society of Visualization (한국가시화정보학회지)

The Korean Society of Visualization (한국가시화정보학회)
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The Experimental Study of EHD Printing for Different Nozzle Shapes

노즐 형상에 따른 전기수력학 프린팅의 실험적 연구

  • 김지영 (건국대학교 항공우주정보시스템공학과) ;
  • 부닷귀엔 (건국대학교 항공우주정보시스템공학과) ;
  • 변도영 (건국대학교 항공우주정보시스템공학과)
  • Received : 2011.06.05
  • Accepted : 2011.06.29
  • Published : 2011.06.30
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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.

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References

  1. Jaworek, A., and A. Krupa., 1999, "Classification of the modes of EHD spraying", Journal of aerosol science 30, no. 7: 975-975.
  2. Park, J. U, M. Hardy, S. J Kang, K. Barton, K. Adair, D. kishore Mukhopadhyay, C. Y Lee, et al., 2007, "High-resolution electrohydrodynamic jet printing.", Nature 6, no. 10: 782-789. https://doi.org/10.1038/nmat1974
  3. Byun, D.Y., V. D Nguyen, P. Dutta, and H. C Park., 2010, "A Hybrid Inkjet Printer Utilizing Electrohydrodynamic Jetting and Piezoelectric Actuation", Japanese Journal of Applied Physics 49: 060216. https://doi.org/10.1143/JJAP.49.060216
  4. Nguyen, V. D, and D. Byun. 2009. "Mechanism of electrohydrodynamic printing based on ac voltage without a nozzle electrode", Applied Physics Letters 94, no. 17: 173509-173509. https://doi.org/10.1063/1.3126957
  5. Yudistira, H. T, V. D Nguyen, P. Dutta, and D. Byun. 2010. Flight behavior of charged droplets in electrohydrodynamic inkjet printing. Applied Physics Letters 96: 023503. https://doi.org/10.1063/1.3280077
  6. Byun, D.Y., Lee, Y.J., 2006, "The droplet movement on the super-hydrophobic surface by the electro-wetting on dielectric and the effect of particles", National Congress on Fluids Engineering Vol.1, pp. 297-300.