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Delayed coalescence of droplets with miscible liquids: Lubrication and phase field theories
Ist Teil von
The European physical journal. E, Soft matter and biological physics, 2011-03, Vol.34 (3), p.24-24, Article 24
Ort / Verlag
Berlin/Heidelberg: Springer-Verlag
Erscheinungsjahr
2011
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
.
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.