Delayed coalescence of droplets with miscible liquids : Lubrication and phase field theories

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2011
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Zusammenfassung

Mixing of droplets with a body of different liquids shows an interesting behavior for small contact angles at solid substrate. The droplets interact with each other, a liquid exchange appears between the approaching drops owing to surface tension gradients at the droplets interface. But the drops remain separated for some seconds (up to minutes), until the merging into a single drop occurs (Langmuir 24, 6395 (2008)). We investigate this phenomenon using lubrication approximation and phase field approach. For both methods, 2D quantitative computer simulations for delayed fusion of perfectly miscible thin liquid films/droplets with low contact angles are reported.

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530 Physik
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Surface Tension, Contact Angle, Contact Line, Liquid Bridge, Lower Surface Tension
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ISO 690BORCIA, Rodica, Siegfried MENZEL, Michael BESTEHORN, Stefan KARPITSCHKA, Hans RIEGLER, 2011. Delayed coalescence of droplets with miscible liquids : Lubrication and phase field theories. In: The European Physical Journal E : Soft Matter and Biological Physics (EPJ E). Springer. 2011, 34(3), 24. ISSN 1292-8941. eISSN 1292-895X. Available under: doi: 10.1140/epje/i2011-11024-9
BibTex
@article{Borcia2011Delay-67070,
  year={2011},
  doi={10.1140/epje/i2011-11024-9},
  title={Delayed coalescence of droplets with miscible liquids : Lubrication and phase field theories},
  number={3},
  volume={34},
  issn={1292-8941},
  journal={The European Physical Journal E : Soft Matter and Biological Physics (EPJ E)},
  author={Borcia, Rodica and Menzel, Siegfried and Bestehorn, Michael and Karpitschka, Stefan and Riegler, Hans},
  note={Article Number: 24}
}
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