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Parametric studies on droplet generation reproducibility for applications with biological relevant fluids

: Wiedemeier, S.; Eichler, M.; Römer, R.; Grodrian, A.; Lemke, K.; Nagel, K.; Klages, C.-P.; Gastrock, G.

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Engineering in life sciences 17 (2017), Nr.12, S.1271-1280
ISSN: 1618-2863
ISSN: 1618-0240
Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer IST ()
droplet based micro fluidic; droplet characterization; droplet media; droplet reproducibility; surface coating

Although the great potential of droplet based microfluidic technologies for routine applications in industry and academia has been successfully demonstrated over the past years, its inherent potential is not fully exploited till now. Especially regarding to the droplet generation reproducibility and stability, two pivotally important parameters for successful applications, there is still a need for improvement. This is even more considerable when droplets are created to investigate tissue fragments or cell cultures (e.g. suspended cells or 3D cell cultures) over days or even weeks. In this study we present microfluidic chips composed of a plasma coated polymer, which allow surfactants-free, highly reproducible and stable droplet generation from fluids like cell culture media. We demonstrate how different microfluidic designs and different flow rates (and flow rate ratios) affect the reproducibility of the droplet generation process and display the applicability for a wide variety of bio(techno)logically relevant media.