Journal
REACTION KINETICS AND CATALYSIS LETTERS
Volume 79, Issue 2, Pages 341-349Publisher
SPRINGER
DOI: 10.1023/A:1024550621912
Keywords
BZ reaction; delayed feedback; mixed mode oscillations; delayed Oregonator model
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Delayed feedbacks are quite common in many physical and biological systems and in particular many physiological systems. Delay can cause a stable system to become unstable and vice versa. One of the well-studied non-biological chemical oscillators is the Belousov-Zhabotinskii (BZ) reaction. This gives relaxation oscillations for a considerable period of time under batch conditions. This paper deals with the effect of perturbing the limit cycle oscillation of BZ reaction by employing a delayed electrical feedback to the system under batch conditions. The parameters chosen to study are external resistance and delay. For various resistances and delays the system was electrically perturbed and found to exhibit various complex mixed mode oscillations. The dynamic features are accounted for by the Oregonator model, with time delay incorporated in one of the variables.
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