Journal
MICROFLUIDICS AND NANOFLUIDICS
Volume 14, Issue 1-2, Pages 45-51Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s10404-012-1021-8
Keywords
Microfluidics; T junction; Monodisperse droplet; Generation regime; Liquid-liquid system
Ask authors/readers for more resources
We present an experimental study of a new regime of monodisperse micro-droplet generation that we named the balloon regime. A dispersion of oil in water in a T-junction microfluidic system was studied. Several microfluidic devices having different cross-sections of the continuous and the dispersed phases micro-channels were tested. This new regime appears only for low- dispersed phase velocity. The micro-droplet size is mainly related to the geometry of the T-junction micro-channels especially its width and depth, and independent of the continuous and dispersed phases velocities. In our experiments, the velocities of the continuous and the dispersed phases and respectively, have been varied in a wide range: from 0.5 to 500 mm/s, and from 0.01 to 30 mm/s. We show that the continuous phase only controls the micro-droplet density, while the dispersed phase linearly changes the frequency of the micro-droplet generation. Another particularity of the present regime, which differentiates it from all other known regimes, is that the micro-droplet retains its circular shape throughout its formation at the T junction, and undergoes no deformation due to the drag forces. We propose a mechanism to explain the formation of micro-droplets in this new regime.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available