B. Marts et al 2008 EPL 83 30010 doi:10.1209/0295-5075/83/30010
B. Marts, T. Bánsági jr. and O. Steinbock
Show affiliationsWe study the dynamics of rotating scroll waves in three-dimensional excitable systems. Experiments are carried out with the 1,4-cyclohexanedione Belousov-Zhabotinsky reaction and wave patterns are measured using optical tomography. We create twisted scroll rings for which the rotation phase varies along their circular rotation backbone and measure the untwisting dynamics of the collapsing structures. Experimental data reveal the formation of an asymmetric, plateau-like phase profile with a growing region of leading phase and a shrinking region of lagging phase. The experimental data support a quantitative description in terms of a nonlinear diffusion equation.
82.40.Ck Pattern formation in reactions with diffusion, flow and heat transfer
Issue 3 (August 2008)
Received 3 March 2008, accepted for publication 23 June 2008
Published 28 July 2008
B. Marts et al 2008 EPL 83 30010
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