Jump to main content
Jump to site search


Nonlinear behavior and fluctuation-induced dynamics in the photosensitive Belousov–Zhabotinsky reaction

Author affiliations

Abstract

The photosensitive Belousov–Zhabotinsky (pBZ) reaction has been used extensively to study the properties of chemical oscillators. In particular, recent experiments revealed the existence of complex spatiotemporal dynamics for systems consisting of coupled micelles (V < 10−21 L) or droplets (V ≈ [10−8–10−11] L) in which the pBZ reaction takes place. These results have been mostly understood in terms of reaction–diffusion models. However, in view of the small size of the droplets and micelles, large fluctuations of concentrations are to be expected. In this work, we investigate the role of fluctuations on the dynamics of a single droplet with stochastic simulations of an extension of the Field–Körös–Noyes (FKN) model taking into account the photosensitivity. The birhythmicity and chaotic behaviors predicted by the FKN model in the absence of fluctuations become transient or intermittent regimes whose lifetime decreases with the size of the droplet. Simple oscillations are more robust and can be observed even in small systems (V > 10−12 L), which justifies the use of deterministic models in microfluidic systems of coupled oscillators. The simulations also reveal that fluctuations strongly affect the efficiency of inhibition by light, which is often used to control the kinetics of these systems: oscillations are found for parameter values for which they are supposed to be quenched according to deterministic predictions.

Graphical abstract: Nonlinear behavior and fluctuation-induced dynamics in the photosensitive Belousov–Zhabotinsky reaction

Back to tab navigation

Publication details

The article was received on 16 May 2017, accepted on 02 Aug 2017 and first published on 04 Aug 2017


Article type: Paper
DOI: 10.1039/C7CP03260A
Citation: Phys. Chem. Chem. Phys., 2017, Advance Article
  •   Request permissions

    Nonlinear behavior and fluctuation-induced dynamics in the photosensitive Belousov–Zhabotinsky reaction

    V. Voorsluijs, I. G. Kevrekidis and Y. De Decker, Phys. Chem. Chem. Phys., 2017, Advance Article , DOI: 10.1039/C7CP03260A

Search articles by author

Spotlight

Advertisements