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Related Experiment Video

Updated: May 22, 2026

Double Emulsion Generation Using a Polydimethylsiloxane (PDMS) Co-axial Flow Focus Device
08:58

Double Emulsion Generation Using a Polydimethylsiloxane (PDMS) Co-axial Flow Focus Device

Published on: December 25, 2015

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

Jang Min Park1, Patrick D Anderson

  • 1Department of Mechanical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands.

Lab on a Chip
|May 18, 2012
PubMed
Summary

A new model predicts double-emulsion formation in microfluidic devices, capturing key behaviors like dripping and jetting regimes. It also explains how interface stability influences the creation of multiple inner drops.

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Last Updated: May 22, 2026

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Published on: April 17, 2018

Area of Science:

  • Multiphase flow dynamics
  • Interfacial phenomena
  • Microfluidics

Background:

  • Double emulsion formation involves complex three-phase fluid systems with varying physical properties.
  • Understanding these systems is crucial for applications in drug delivery, cosmetics, and food science.
  • Experimental observations highlight the need for predictive models of microfluidic emulsion generation.

Purpose of the Study:

  • To develop and present a predictive ternary diffuse-interface model for double-emulsion formation in capillary microfluidic devices.
  • To couple hydrodynamics with thermodynamics of phase field variables for accurate simulation.
  • To validate model predictions against experimental data.

Main Methods:

  • Utilized a Navier-Stokes/Cahn-Hilliard model for a general ternary system.
  • Coupled fluid dynamics (Navier-Stokes) with phase field thermodynamics (Cahn-Hilliard).
  • Simulated double-emulsion formation under varying flow rate conditions.

Main Results:

  • The model successfully predicts key features of double-emulsion formation, consistent with experimental findings.
  • Successfully predicted both dripping and jetting regimes and the transition between them.
  • Demonstrated that outer interface stability influences the formation of multiple inner drops.

Conclusions:

  • The presented ternary diffuse-interface model is a powerful tool for predicting double-emulsion formation in microfluidics.
  • The model accurately captures regime transitions and the impact of interfacial stability.
  • This work advances the understanding and control of microfluidic emulsion generation.