Journal of Mechanical Science and Technology

, Volume 26, Issue 5, pp 1403–1408 | Cite as

Study on droplet formation with surface tension for electrohydrodynamic inkjet nozzle

  • Soo-Hong Lee
  • Xuan Hung Nguyen
  • Han Seo KoEmail author


Droplet ejection from an electrohydrodynamic (EHD) inkjet nozzle depends on many factors such as an onset voltage, liquid conductivity, surface tension, etc. Since the surface tension has an influence on the contact angle between the nozzle surface and the liquid droplet, the surface tension change should be investigated for the control of the droplet ejection. In this study, surfactant, which can weaken the surface tension force, was used to analyze the effect of the surface tension. Furthermore, hydrophobic coating of the nozzle surface was considered as another factor for the droplet ejection. Also, a flow visualization technique was developed to observe the droplet formation and ejection from the EHD inkjet nozzle by various surface tension values.


Droplet Electrohydrodynamic Inkjet Nozzle Surface tension 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. [1]
    A. R. Jones and K. C. Thong, The production of charged monodisperse fuel droplets by electrical dispersion. J. Phys. D: Appl. Phys., 4 (1971) 1159.CrossRefGoogle Scholar
  2. [2]
    D. H. William and E. C. Humphery, The drop weight method for the determination of surface tension, J. Am. Chem. Soc., 38(2) (1916) 228–236.CrossRefGoogle Scholar
  3. [3]
    M. Mart’inez-S’anchez, 16.522 space propulsion, in MIT OpenCourseWare (2004).Google Scholar
  4. [4]
    P. Lozano, M. Martinez-S’anchez and J. M. Lopez-Urdiales, Electrospray emission from nonwetting flat dielectric surfaces, Journal of Colloid and Interface Science, 276 (2004) 392–399.CrossRefGoogle Scholar
  5. [5]
    I. Marginean, From chaotic cone pulsation to ion evaporation in electrosprays, Dissertation, Faculty of Columbian College of Arts and Sciences, The George Washington University, August 31 (2006).Google Scholar
  6. [6]
    D. Poncelet, R. J. Neufeld, M. F. A. Goosen, B. Burgarski and V. Babak, Formation of microgel beads by electric dispersion of polymer solutions, AIChE Journal, 45(9) (1999) 2018–2023.CrossRefGoogle Scholar
  7. [7]
    I. Hayati, A. I. Bailey and TH. F. Tadros, Investigations into the mechanisms of electrohydrodynamic spraying of liquids, I. Journal of Colloid and Interface Science, 117(1) May (1987).Google Scholar
  8. [8]
    Y. J. Kim, H. S. Ko, S. Lee, S. U. Son, D. Jung and D. Byun, Numerical and experimental analysis of electrostatic ejection of liquid droplet, Journal of the Korean Physical Society, 51 (2007) 42–46.CrossRefGoogle Scholar
  9. [9]
    D. Poncelet, V. G. Babak, R. J. Neufeld, M. F. A. Goosen and B. Burgarski, Theory of electrostatic dispersion of polymer solutions in the production of microgel beads containing biocatalyst, Advances in Colloid and Interface Science, 79 (1999) 213–228.CrossRefGoogle Scholar
  10. [10]
    A. Speranza and M. Ghadiri, Effect of electrostatic field on dripping of highly conductive and viscous liquids, Powder Technolohy, 136–135 (2003) 361–366.CrossRefGoogle Scholar
  11. [11]
    S. Eri, K. Fumio, D. Jun, M. Tatsushi and Y. Hideo, Preparation of microcapsules by electrostatic atomization, Journal of Electrostatics, 66(5–6) (2008) 312–318.Google Scholar
  12. [12]
    S. W. Matthias and M. Mathias, Electrocspray and Taylorcone theory, Dole’beam of macromolecules at last, International Journal of Mass Spectrometry and Ion Processes 136 (1994) 167–180.CrossRefGoogle Scholar
  13. [13]
    Y. H. Kim and D. T. Wasan, Dynamic surface tension of ionic surfactant solution, Journal of Ind. & Eng. Chemistry, 3(2) June (1997) 119–127.Google Scholar
  14. [14]
    T. O. Junpei, T. Ishikawa, Y. Watanabe and P. F. Paul, Surface tension and viscosity of molten vanadium measured with an electrostatic levitation furnace, J. Chem. Thermodynamics, 42 (2010) 856–859.CrossRefGoogle Scholar
  15. [15]
    Y. Y. Zuo, C. Do and A. W. Neumann, Automatic measurement of surface tension from noisy images using a component labeling method, Colloids and Surfaces A, Physicochem. Eng. Aspects, 299 (2007) 109–166.CrossRefGoogle Scholar
  16. [16]
    M. G. Cabezas, A. Bateni, J. M. Montanero and A. W. Neumann, Determination of surface tension and contact angle from the shapes of axisymmetric fluid interfaces without use of apex coordinates, Langmuir (2006) 22.Google Scholar

Copyright information

© The Korean Society of Mechanical Engineers and Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Graduate School of Mechanical EngineeringSungkyunkwan UniversitySuwon, Gyeonggi-doKorea
  2. 2.School of Mechanical EngineeringSungkyunkwan UniversitySuwon, Gyeonggi-doKorea

Personalised recommendations