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Accueil > Publications > Archives 2004-2010 > 2006

Increasing and decreasing droplets velocity in microchannels

Prat L., Sarrazin F., Tasseli J. and Marty A. — Microfluid Nanofluid (2006) 2 : 271 ?274

publié le

This paper deals with a specific aspect of nonmiscible
liquid ?liquid systems in microfluidic. For
Chemical Engineering applications, the main constraints
of functioning lie in the droplets velocity and frequency.
Furthermore, the material used and the composition of
the fluids is often imposed by the chemistry of the system
(material resistance and fluids composition) and there is
no possibility of adding other compounds (e.g., surfactants).
A technique under evaluation is presented : by
using secondary channels and pumps, it is possible to
increase or decrease, at will, the droplets velocity after
they have been generated. Some experimental results are
presented and discussed, including the possible limits of
such an approach.