Partner: Volkert van Steijn

Delft University of Technology (NL)

Recent publications
1.van Steijn V., Korczyk P.M., Derzsi L., Abate A.R., Weitz D.A., Garstecki P., Block-and-break generation of microdroplets with fixed volume, BIOMICROFLUIDICS, ISSN: 1932-1058, DOI: 10.1063/1.4801637, Vol.7, pp.024108-1-8, 2013
Abstract:

We introduce a novel type of droplet generator that produces droplets of a volume set by the geometry of the droplet generator and not by the flow rates of the liquids. The generator consists of a classic T-junction with a bypass channel. This bypass directs the continuous fluid around the forming droplets, so that they can fill the space between the inlet of the dispersed phase and the exit of the bypass without breaking. Once filled, the dispersed phase blocks the exit of the bypass and is squeezed by the continuous fluid and broken off from the junction. We demonstrate the fixed-volume droplet generator for (i) the formation of monodisperse droplets from a source of varying flow rates, (ii) the formation of monodisperse droplets containing a gradation of solute concentration, and (iii) the parallel production of monodisperse droplets.

Keywords:

droplet generator, droplets, microfluidics

Affiliations:
van Steijn V.-Delft University of Technology (NL)
Korczyk P.M.-IPPT PAN
Derzsi L.-Institute of Physical Chemistry, Polish Academy of Sciences (PL)
Abate A.R.-University of California, Berkeley (US)
Weitz D.A.-Harvard University (US)
Garstecki P.-Institute of Physical Chemistry, Polish Academy of Sciences (PL)

Conference abstracts
1.Korczyk P.M., Van Steijn V., Błoński S., Kowalewski T.A., Garstecki P., Mechanism of generation of droplets in a T-junction for low capillary numbers, XXI FMC, XXI Fluid Mechanics Conference, 2014-06-15/06-18, Kraków (PL), pp.117, 2014
Keywords:

microfluidics, lab on a chip, droplets, T-junction

Affiliations:
Korczyk P.M.-IPPT PAN
Van Steijn V.-Delft University of Technology (NL)
Błoński S.-IPPT PAN
Kowalewski T.A.-IPPT PAN
Garstecki P.-Institute of Physical Chemistry, Polish Academy of Sciences (PL)