Publikation: Printing wet-on-wet : Attraction and repulsion of drops on a viscous film
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2018
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Applied Physics Letters. AIP Publishing. 2018, 113(18), 183701. ISSN 0003-6951. eISSN 1077-3118. Available under: doi: 10.1063/1.5048681
Zusammenfassung
Wet-on-wet printing is frequently used in inkjet printing for graphical and industrial applications, where substrates can be coated with a thin liquid film prior to ink drop deposition. Two drops placed close together are expected to interact via deformations of the thin viscous film, but the nature of these capillary interactions is unknown. Here, we show that the interaction can be attractive or repulsive depending on the distance separating the two drops. The distance at which the interaction changes from attraction to repulsion is found to depend on the thickness of the film and increases over time. We reveal the origin of the non-monotonic interactions, which lies in the appearance of a visco-capillary wave on the thin film induced by the drops. Using the thin-film equation, we identify the scaling law for the spreading of the waves and demonstrate that this governs the range over which the interaction is observed.
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Fachgebiet (DDC)
530 Physik
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Digital holographic microscopy, Printing process, Thin films, Gas liquid interfaces, Interfacial tension
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HACK, Michiel A., Maxime COSTALONGA, Tim SEGERS, Stefan KARPITSCHKA, Herman WIJSHOFF, Jacco H. SNOEIJER, 2018. Printing wet-on-wet : Attraction and repulsion of drops on a viscous film. In: Applied Physics Letters. AIP Publishing. 2018, 113(18), 183701. ISSN 0003-6951. eISSN 1077-3118. Available under: doi: 10.1063/1.5048681BibTex
@article{Hack2018Print-67429,
year={2018},
doi={10.1063/1.5048681},
title={Printing wet-on-wet : Attraction and repulsion of drops on a viscous film},
number={18},
volume={113},
issn={0003-6951},
journal={Applied Physics Letters},
author={Hack, Michiel A. and Costalonga, Maxime and Segers, Tim and Karpitschka, Stefan and Wijshoff, Herman and Snoeijer, Jacco H.},
note={Article Number: 183701}
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<dcterms:abstract>Wet-on-wet printing is frequently used in inkjet printing for graphical and industrial applications, where substrates can be coated with a thin liquid film prior to ink drop deposition. Two drops placed close together are expected to interact via deformations of the thin viscous film, but the nature of these capillary interactions is unknown. Here, we show that the interaction can be attractive or repulsive depending on the distance separating the two drops. The distance at which the interaction changes from attraction to repulsion is found to depend on the thickness of the film and increases over time. We reveal the origin of the non-monotonic interactions, which lies in the appearance of a visco-capillary wave on the thin film induced by the drops. Using the thin-film equation, we identify the scaling law for the spreading of the waves and demonstrate that this governs the range over which the interaction is observed.</dcterms:abstract>
<dcterms:issued>2018</dcterms:issued>
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