Regensburg 2013 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 34: Poster: Wetting, Micro and Nano Fluidics

CPP 34.17: Poster

Wednesday, March 13, 2013, 16:30–18:30, Poster C

Nonlinear chemical reactions in a droplet — •Maria Schwarzl, Robert Niedl, Igal Berenstein, and Carsten Beta — Institute of Physics and Astronomy, University of Potsdam, Germany

Over the last decade, microfluidic systems with water in oil droplets have developed into a widely used design principle for chemical and biological applications. In particular, the use of droplets as small micro-reactors has stimulated enormous research activities. Among other aspects, the mixing behavior inside such droplets has been a topic of wide interest. It was observed that inside a droplet, aqueous solutions with different viscosities may exhibit faster mixing as compared to components with equal viscosity. Related to this observation, we have found that a nonlinear clock reaction, when operated in a linear microfluidic channel, can be accelerated by using fluids of different viscosities. To further characterize the effects that are responsible for these observations, we compare measurements of enzymatic and inorganic autocatalytic reactions in linear microchannels with those measured in a droplet system.