title: Microfluidic production of droplet pairs.
abstract: We study a microfluidic dual nozzle for the production of water-in-oil droplet pairs. Droplets are paired by the hydrodynamic coupling of two nozzles over a wide range of aqueous and oil flow rates provided that they are larger than the channel dimensions. The droplet production frequencies and volumes are related to the flow rates through a single, experimentally determined power-law. The data are in good agreement with a model based on a geometrical decomposition of the dual nozzle leading to a general equation of droplet frequencies as a function of the various flow rates.
authors.affiliation: Institut de Science et d'Ingenierie Supramoleculaires (ISIS), Universite Louis Pasteur, CNRS UMR 7006, Strasbourg, France.
authors.forename: Lucas
authors.initials: L
authors.lastname: Frenz
authors.forename: Joshua
authors.initials: J
authors.lastname: Blouwolff
authors.forename: Andrew D
authors.initials: AD
authors.lastname: Griffiths
authors.forename: Jean-Christophe
authors.initials: JC
authors.lastname: Baret