Nonaxisymmetric Effects in Drop-On-Demand Piezoacoustic Inkjet Printing

Mark-Jan van der Meulen, Hans Reinten, Herman Wijshoff, Michel Versluis, Detlef Lohse, and Paul Steen
Phys. Rev. Applied 13, 054071 – Published 28 May 2020

Abstract

Drop-on-demand (DOD) inkjet printing is well characterized and a well-studied problem, but nonaxisymmetric effects are typically ignored, while these effects can severely reduce the print-head performance and its stability. In this paper we first review nonaxisymmetric droplet formation originating from geometrical effects. We then focus on the possibility that observed nonaxisymmetry arises from surface instabilities of the meniscus by a Rayleigh-Taylor-like (RT) mechanism. It is shown theoretically that the meniscus can become RT unstable beyond a critical acceleration. A comparison with data extracted from high-speed recordings of the meniscus oscillations show that the critical accelerations are exceeded. Using the time duration that the critical acceleration is exceeded and the maximal growth rate, the extent of growth of the unstable wave is estimated.

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  • Received 5 October 2019
  • Revised 26 January 2020
  • Accepted 14 April 2020

DOI:https://doi.org/10.1103/PhysRevApplied.13.054071

© 2020 American Physical Society

Physics Subject Headings (PhySH)

Fluid Dynamics

Authors & Affiliations

Mark-Jan van der Meulen1,*, Hans Reinten2, Herman Wijshoff2, Michel Versluis1, Detlef Lohse1,3,†, and Paul Steen4,‡

  • 1Physics of Fluids Group, Max-Planck Center for Complex Fluid Dynamics, MESA+ Research Institute, and J.M. Burgers Centre for Fluid Dynamics, Department of Science & Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, Netherlands
  • 2Océ Technologies, P.O. Box 101, 5900 MA Venlo, Netherlands
  • 3Max Planck Institute for Dynamics and Self-Organization, Am Fassberg 17, 37077 Göttingen, Germany
  • 4School of Chemical and Biomolecular Engineering, Cornell University, Olin Hall 120, Ithaca, New York 14853, USA

  • *markjanvdm@gmail.com
  • d.lohse@utwente.nl
  • phs7@cornell.edu

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Vol. 13, Iss. 5 — May 2020

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