Microbubbles entrained in a piezo-driven drop-on-demand printhead disturb the acoustics of the microfluidic ink channel and, thereby, the jetting behavior. Here, the resonance behavior of an ink channel as a function of the microbubble size and number of bubbles is studied through theoretical modeling and experiments. The system is modeled as a set of two coupled harmonic oscillators: one corresponds to the compliant ink channel and the other corresponds to the microbubble. The predicted and measured eigenfrequencies are in excellent agreement. It was found that the resonance frequency is independent of the bubble size as long as the compliance of the bubble dominates over that of the piezo actuator. An accurate description of the eigenfrequency of the coupled system requires the inclusion of the increased inertance of the entrained microbubble due to confinement. It is shown that the inertance of a confined bubble can be accurately obtained by using a simple potential flow approach. The model is further validated by the excellent agreement between the modeled and measured microbubble resonance curves. The present work, therefore, provides physical insight into the coupled dynamics of a compliant ink channel with an entrained microbubble.
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April 2022
April 12 2022
Resonance behavior of a compliant piezo-driven inkjet channel with an entrained microbubble Available to Purchase
Hans Reinten;
Hans Reinten
1
Canon Production Printing Netherlands B.V.
, P.O. Box 101, 5900 MA Venlo, Netherlands
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Yogesh Jethani;
Yogesh Jethani
a)
2
Physics of Fluids Group, Max Planck Center Twente for Complex Fluid Dynamics, MESA+ Institute for Nanotechnology, University of Twente
, P.O. Box 217, 7500 AE Enschede, Netherlands
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Arjan Fraters;
Arjan Fraters
2
Physics of Fluids Group, Max Planck Center Twente for Complex Fluid Dynamics, MESA+ Institute for Nanotechnology, University of Twente
, P.O. Box 217, 7500 AE Enschede, Netherlands
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Roger Jeurissen;
Roger Jeurissen
3
Department of Applied Physics, Eindhoven University of Technology
, P.O. Box 513, 5600 MB Eindhoven, Netherlands
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Detlef Lohse;
Detlef Lohse
2
Physics of Fluids Group, Max Planck Center Twente for Complex Fluid Dynamics, MESA+ Institute for Nanotechnology, University of Twente
, P.O. Box 217, 7500 AE Enschede, Netherlands
5
Max Planck Institute for Dynamics and Self-Organization
, 37077, Göttingen, Germany
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Michel Versluis;
Michel Versluis
2
Physics of Fluids Group, Max Planck Center Twente for Complex Fluid Dynamics, MESA+ Institute for Nanotechnology, University of Twente
, P.O. Box 217, 7500 AE Enschede, Netherlands
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Tim Segers
Tim Segers
e)
4
BIOS/Lab-on-a-Chip Group, Max Planck Center Twente for Complex Fluid Dynamics, MESA+ Institute for Nanotechnology, University of Twente
, Enschede, Netherlands
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Hans Reinten
1
Yogesh Jethani
2,a)
Arjan Fraters
2
Roger Jeurissen
3
Detlef Lohse
2,5
Michel Versluis
2
Tim Segers
4,e)
1
Canon Production Printing Netherlands B.V.
, P.O. Box 101, 5900 MA Venlo, Netherlands
2
Physics of Fluids Group, Max Planck Center Twente for Complex Fluid Dynamics, MESA+ Institute for Nanotechnology, University of Twente
, P.O. Box 217, 7500 AE Enschede, Netherlands
3
Department of Applied Physics, Eindhoven University of Technology
, P.O. Box 513, 5600 MB Eindhoven, Netherlands
5
Max Planck Institute for Dynamics and Self-Organization
, 37077, Göttingen, Germany
4
BIOS/Lab-on-a-Chip Group, Max Planck Center Twente for Complex Fluid Dynamics, MESA+ Institute for Nanotechnology, University of Twente
, Enschede, Netherlands
J. Acoust. Soc. Am. 151, 2545–2557 (2022)
Article history
Received:
October 25 2021
Accepted:
February 22 2022
Citation
Hans Reinten, Yogesh Jethani, Arjan Fraters, Roger Jeurissen, Detlef Lohse, Michel Versluis, Tim Segers; Resonance behavior of a compliant piezo-driven inkjet channel with an entrained microbubble. J. Acoust. Soc. Am. 1 April 2022; 151 (4): 2545–2557. https://doi.org/10.1121/10.0009784
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