TY  - GEN
A1  - Niedl, Robert Raimund
A1  - Berenstein, Igal
A1  - Beta, Carsten
T1  - How imperfect mixing and differential diffusion accelerate the rate of nonlinear reactions in microfluidic channels
N2  - In this paper, we show experimentally that inside a microfluidic device, where the reactants are segregated, the reaction rate of an autocatalytic clock reaction is accelerated in comparison to the case where all the reactants are well mixed. We also find that, when mixing is enhanced inside the microfluidic device by introducing obstacles into the flow, the clock reaction becomes slower in comparison to the device where mixing is less efficient. Based on numerical simulations, we show that this effect can be explained by the interplay of nonlinear reaction kinetics (cubic autocatalysis) and differential diffusion, where the autocatalytic species diffuses slower than the substrate.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 253 
KW  - arsenious acid
KW  - fronts
KW  - paper
KW  - poly(dimethylsiloxane)
KW  - scale
KW  - systems
Y1  - 2016
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-95810
SP  - 6451
EP  - 6457
ER  -