Self-Organized Traveling Chemo-Hydrodynamic Fingers Triggered by a Chemical Oscillator

Pulsatile chemo-hydrodynamic patterns due to a coupling between an oscillating chemical reaction and buoyancy-driven hydrodynamic flows can develop when two solutions of separate reactants of the Belousov–Zhabotinsky reaction are put in contact in the gravity field and conditions for chemical oscill...

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Veröffentlicht in:The journal of physical chemistry letters 2014-02, Vol.5 (3), p.413-418
Hauptverfasser: Escala, D. M, Budroni, M. A, Carballido-Landeira, J, De Wit, A, Muñuzuri, A. P
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container_title The journal of physical chemistry letters
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creator Escala, D. M
Budroni, M. A
Carballido-Landeira, J
De Wit, A
Muñuzuri, A. P
description Pulsatile chemo-hydrodynamic patterns due to a coupling between an oscillating chemical reaction and buoyancy-driven hydrodynamic flows can develop when two solutions of separate reactants of the Belousov–Zhabotinsky reaction are put in contact in the gravity field and conditions for chemical oscillations are met in the contact zone. In regular oscillatory conditions, localized periodic changes in the concentration of intermediate species induce pulsatile density gradients, which, in turn, generate traveling convective fingers breaking the transverse symmetry. These patterns are the self-organized result of a genuine coupling between chemical and hydrodynamic modes.
doi_str_mv 10.1021/jz402625z
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subjects Liquids
Chemical and Dynamical Processes in Solution
title Self-Organized Traveling Chemo-Hydrodynamic Fingers Triggered by a Chemical Oscillator
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