Equilibrium and Nonequilibrium  States in Microfluidic  Double Emulsions

N. Pannacci; Henrik Bruus; D. Bartolo; I. Etchart; T. Lockhart; Y. Hennequin; H. Willaime; P. Tabeling

doi:10.1103/PhysRevLett.101.164502

Equilibrium and Nonequilibrium States in Microfluidic Double Emulsions

N. Pannacci, Henrik Bruus, D. Bartolo, I. Etchart, T. Lockhart, Y. Hennequin, H. Willaime, P. Tabeling

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Abstract

We describe experimental and theoretical studies dedicated to establishing the physics of formation of double droplets in microfluidic systems. We show that the morphologies (complete engulfing, partial engulfing, and nonengulfing) obtained at late times minimize the interfacial energy of the system. We explain that nonequilibrium morphologies generated in the system can have long lifetimes. Remarkably, the physics of formation of the double droplets with microfluidics allows the synthesis of particles with new morphologies.

Original language	English
Journal	Physical Review Letters
Volume	101
Issue number	16
Pages (from-to)	164502
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.101.164502
Publication status	Published - 2008

Bibliographical note

Keywords

DROPS
SURFACE
MONODISPERSE DOUBLE EMULSIONS
DEVICES
PLASMA

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10.1103/PhysRevLett.101.164502

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AU - Pannacci, N.

AU - Bruus, Henrik

AU - Bartolo, D.

AU - Etchart, I.

AU - Lockhart, T.

AU - Hennequin, Y.

AU - Willaime, H.

AU - Tabeling, P.

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AB - We describe experimental and theoretical studies dedicated to establishing the physics of formation of double droplets in microfluidic systems. We show that the morphologies (complete engulfing, partial engulfing, and nonengulfing) obtained at late times minimize the interfacial energy of the system. We explain that nonequilibrium morphologies generated in the system can have long lifetimes. Remarkably, the physics of formation of the double droplets with microfluidics allows the synthesis of particles with new morphologies.

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KW - SURFACE

KW - MONODISPERSE DOUBLE EMULSIONS

KW - DEVICES

KW - PLASMA

U2 - 10.1103/PhysRevLett.101.164502

DO - 10.1103/PhysRevLett.101.164502

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