Complex oscillation modes in the Belousov-Zhabotinsky reaction by weak diffusive coupling

Autor(en): Lenk, Claudia
Einax, Mario
Koehler, J. Michael
Maass, Philipp 
Stichwörter: DYNAMICS; Physics; Physics, Fluids & Plasmas; Physics, Mathematical; SPIRAL WAVES
Erscheinungsdatum: 2019
Herausgeber: AMER PHYSICAL SOC
Journal: PHYSICAL REVIEW E
Volumen: 99
Ausgabe: 2
Zusammenfassung: 
We study the diffusive coupling of oscillating or excitable Belousov-Zhabotinsky reaction units arranged in a square lattice array and show that for certain sizes of the units and for certain distances between the units, complex oscillation modes of individual spots occur, which manifest themselves in multi-periodic, amplitude-modulated, and multi-mode oscillations. This experimental finding can be reproduced in simulations of the FitzHugh-Nagumo model mimicking the experimental setup, suggesting that it is a generic phenomenon in systems of coupled excitable units such as excitable cell tissues or coupled oscillators such as neurons. Further analysis let us conclude that the complex oscillation modes occur close to the transition from quiescent to coupling-induced oscillations states if this transition is taking place at weak coupling strength.
ISSN: 24700045
DOI: 10.1103/PhysRevE.99.022202

Show full item record

Page view(s)

2
Last Week
0
Last month
1
checked on Feb 26, 2024

Google ScholarTM

Check

Altmetric