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Korczyk P.M., Derzsi L.♦, Jakieła S.♦, Garstecki P.♦, Microfluidic traps for hard-wired operations on droplets,
LAB ON A CHIP, ISSN: 1473-0197, DOI: 10.1039/c3lc50347j, Vol.13, pp.4096-4102, 2013Streszczenie: We present microfluidic modules (traps) that allow us to lock, shift, dose and merge micro-aliquots of liquid precisely. The precision is hard-wired into the geometry of the device: small values of the capillary number guarantee reproducibility of operation over a range of rates of flow that need not be controlled precisely. The modules can be integrated into systems that perform complicated protocols on micro-droplets while not requiring precision in forcing the flow. Słowa kluczowe: microfluidics, droplets Afiliacje autorów:
Korczyk P.M. | - | IPPT PAN | Derzsi L. | - | Institute of Physical Chemistry, Polish Academy of Sciences (PL) | Jakieła S. | - | Institute of Physical Chemistry, Polish Academy of Sciences (PL) | Garstecki P. | - | Institute of Physical Chemistry, Polish Academy of Sciences (PL) |
| | 40p. |
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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, 2013Streszczenie: 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. Słowa kluczowe: droplet generator, droplets, microfluidics Afiliacje autorów:
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 (US) | Weitz D.A. | - | Harvard University (US) | Garstecki P. | - | Institute of Physical Chemistry, Polish Academy of Sciences (PL) |
| | 35p. |