Discrete microfluidics: Reorganizing droplet arrays at a bend

Surenjav, Enkhtuul; Herminghaus, Stephan; Priest, Craig; Seemann, Ralf
October 2009
Applied Physics Letters;10/12/2009, Vol. 95 Issue 15, p154104
Academic Journal
Microfluidic manipulation of densely packed droplet arrangements (i.e., gel emulsions) using sharp microchannel bends was studied as a function of bend angle, droplet volume fraction, droplet size, and flow velocity. Emulsion reorganization was found to be specifically dependent on the pathlength that the droplets are forced to travel as they navigate the bend under spatial confinement. We describe how bend-induced droplet displacements might be exploited in complex, droplet-based microfluidics.


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