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arXiv · 1205.5243

Buckling of scroll waves

Hans Dierckx·Henri Verschelde·Ozgur Selsil·Vadim Biktashev
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Abstract

A scroll wave in a sufficiently thin layer of an excitable medium with negative filament tension can be stable nevertheless due to filament rigidity. Above a certain critical thickness of the medium, such scroll wave will have a tendency to deform into a buckled, precessing state. Experimentally this will be seen as meandering of the spiral wave on the surface, the amplitude of which grows with the thickness of the layer, until a break-up to scroll wave turbulence happens. We present a simplified theory for this phenomenon and illustrate it with numerical examples.

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Hans Dierckx, Henri Verschelde, Ozgur Selsil, Vadim Biktashev. 2012-09-25. Buckling of scroll waves. https://doi.org/10.1103/physrevlett.109.174102

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