A ternary model for double-emulsion formation in a capillary microfluidic device

J.M. Park, P.D. Anderson

Research output: Contribution to journalArticleAcademicpeer-review

28 Citations (Scopus)
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Abstract

To predict double-emulsion formation in a capillary microfluidic device, a ternary diffuse-interface model is presented. The formation of double emulsions involves complex interfacial phenomena of a three-phase fluid system, where each component can have different physical properties. We use the Navier-Stokes/Cahn-Hilliard model for a general ternary system, where the hydrodynamics is coupled with the thermodynamics of the phase field variables. Our model predicts important features of the double-emulsion formation which was observed experimentally by Utada et al. [Utada et al., Science, 2005, 308, 537]. In particular, our model predicts both the dripping and jetting regimes as well as the transition between those two regimes by changing the flow rate conditions. We also demonstrate that a double emulsion having multiple inner drops can be formed when the outer interface is more stable than the inner interface
Original languageEnglish
Pages (from-to)2672-2677
JournalLab on a Chip
Volume12
Issue number15
DOIs
Publication statusPublished - 2012

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