Reactive mixing, microfluid

The role of mixing has been studied in systems with more complex reaction schemes or considering more complex fluid-dynamical properties, and in the context of chemical engineering or microfluidic applications (for reviews on microfluidics see e.g. Squires (2005) or Ottino and Wiggins (2004)). Muzzio and Liu (1996) studied bi-molecular and so-called competitive-consecutive reactions with multiple timescales in chaotic flows. Reduced models that predict the global behavior of the competitive-consecutive reaction scheme were introduced by Cox (2004) and by Vikhansky and Cox (2006), and a method for statistical description of reactive flows based on a con-... 

In a continuous flow system, reactions are performed at steady state, which makes it possible to achieve better control and reproducibility. Furthermore, the ability to manipulate reactant concentrations in both space and time also provides a high level of reaction control than that of bulk stirred reactors. The spatial and temporal controls of chemical reactions in microfluidic devices are useful to control and alter chemical reactivity according to the prefiminary design. And usually multistep synthesis can produce particles with fairly complex shapes and functionalities. However, the coalescence between droplets, the stability of flows after several times of mixing, and the controllability of the fluid by multistep stiU remain to be improved. 

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