caa a22 4500 463235029 CHVBK 20180405153254.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10404-007-0157-4 doi (NATIONALLICENCE)springer-10.1007/s10404-007-0157-4 Microphotometric characterization of fluid segment populations generated in different simple microfluidic networks [Elektronische Daten] [J. Köhler, P. Groß] The stability of fluid segments is limited by deformation stress and by coalescence events. Both factors are typical for the passage of fluid segments through microfluidic networks. Therefore, the coalescence behaviour of micro fluid segments in simple network structures in dependence of flow rate ratios was investigated and characterized by the composition of obtained segment populations. Series of segments of different size and distance were generated either in a double T- or in a triple T-arrangement. PTFE elements were used for the micro fluid network. Nearly pulsation-free fluid actuation was realized by syringe pumps. The flow conditions in the input streams of carrier liquid and injected solutions remained constant during the experiments. Segment sequences become divers by different injection, stacking and coalescence events. The resulting segment sequences were characterized by on-line micro photometry. The populations of obtained micro fluid segments during each experiment were characterized by the distribution of segment size and segment distance or segment period, respectively. Microfluidic experiments as well as the numerical simulations support the assumption that the character of segment populations is mainly determined by the flow rate ratios and by the coalescence sensitivity beside the topology of the fluidic network. Springer-Verlag, 2007 Microfluidic networks nationallicence Microfluidics nationallicence Segmented flow nationallicence Slug flow nationallicence Fluid segments nationallicence Köhler J. Department of Physical Chemistry and Microreaction Technology, Institut für Physik, Technische Universität Ilmenau, PF 10 05 65, 98684, Ilmenau, Germany aut Groß P. Department of Physical Chemistry and Microreaction Technology, Institut für Physik, Technische Universität Ilmenau, PF 10 05 65, 98684, Ilmenau, Germany aut Microfluidics and Nanofluidics Springer-Verlag 3/6(2007-12-01), 653-663 1613-4982 3:6<653 2007 3 10404 https://doi.org/10.1007/s10404-007-0157-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10404-007-0157-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Köhler J. Department of Physical Chemistry and Microreaction Technology, Institut für Physik, Technische Universität Ilmenau, PF 10 05 65, 98684, Ilmenau, Germany aut NATIONALLICENCE 700 1- Groß P. Department of Physical Chemistry and Microreaction Technology, Institut für Physik, Technische Universität Ilmenau, PF 10 05 65, 98684, Ilmenau, Germany aut NATIONALLICENCE 773 0- Microfluidics and Nanofluidics Springer-Verlag 3/6(2007-12-01), 653-663 1613-4982 3:6<653 2007 3 10404 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer