PMID: 19113387Dec 31, 2008Paper

Dewetting of a stratified two-component liquid film on a solid substrate

Physical Review Letters
Samy Merabia, Josep Bonet Avalos

Abstract

Dissipative particle dynamics simulations for the dewetting of a stratified thin film, composed of two immiscible fluids of different viscosity, reveal a nontrivial dewetting kinetics depending on the location of the more viscous liquid with respect to the solid substrate. Our simulations show that when the layer of higher viscosity is in contact with the substrate, the energy loss through viscous dissipation is concentrated near the contact line. The kinetics of dewetting is then inversely proportional to the viscosity of the lower layer eta_{A} (with respect to eta_{B} for the upper layer). However, when the liquid of higher viscosity is on the upper layer, a new dynamics appears with a dewetting velocity V approximately eta_{B};{-0.44}eta_{A};{-0.56}. The difference between these two scenarios lies in the different routes through which the interfacial energy is converted into heat by viscous dissipation in the rim.

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Citations

Jun 30, 2015·Soft Matter·Sabrina HaefnerKarin Jacobs
Jan 27, 2010·Journal of Physics. Condensed Matter : an Institute of Physics Journal·O Bäumchen, K Jacobs
Aug 17, 2020·Physical Review. E·Peter Vanya, James A Elliott
Jun 19, 2014·The Journal of Physical Chemistry Letters·John K BrennanJames P Larentzos

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