We study the formation and control of single and multiple emulsions for droplet fluidics. Geometic contraints as well as acoustic forces are used to directs droplets at high speed in microfluidic channels and precisely control their volume and composition.

Adams, L.L.A., Kodger, T. E., Kim, S.-H., Shum, H. C., Franke, T., and Weitz, D. A. (2012) Single step emulsification for the generation of multi-component double emulsions. Soft Matter, 8(41), pp. 10719-10724. (doi:10.1039/C2SM25953B)

Fluorescence-Activated SAW-Actuated Cell and Droplet Sorting (FASAWACDS)

Schmid, L., Weitz, D. A., and Franke, T. (2014) Sorting drops and cells with acoustics: acoustic microfluidic fluorescence-activated cell sorter. Lab on a Chip, 14(19), pp. 3710-3718. (doi:10.1039/c4lc00588k)

Franke, T., Braunmüller, S., Schmid, L., Wixforth, A., and Weitz, D. A. (2010) Surface acoustic wave actuated cell sorting (SAWACS). Lab on a Chip, 10(6), pp. 789-794. (doi:10.1039/B915522H)

SAW Droplet Modulation

Schmid, L., and Franke, T. (2014) Acoustic modulation of droplet size in a T-junction. Applied Physics Letters, 104(13), p. 133501. (doi:10.1063/1.4869536)

Schmid, L., and Franke, T. (2013) SAW-controlled drop size for flow focusing. Lab on a Chip, 13(9), pp. 1691-1694. (doi:10.1039/C3LC41233D)

Others

Wyss, H. M., Franke, T., Mele, E., and Weitz, D. A. (2010) Capillary micromechanics: measuring the elasticity of microscopic soft objects. Soft Matter, 6(18), pp. 4550-4555. (doi:10.1039/C003344H)

Franke, T. A., and Wixforth, A. (2008) Microfluidics for miniaturized laboratories on a chip. ChemPhysChem, 9(15), pp. 2140-2156. (doi:10.1002/cphc.200800349)

Lipowsky, R., Brinkmann, M., Dimova, R., Franke, T., Kierfeld, J., and Zhang, X. (2005) Droplets, bubbles, and vesicles at chemically structured surfaces. Journal of Physics: Condensed Matter, 17(9), S537-S558. (doi:10.1088/0953-8984/17/9/015)