期刊
PHYSICAL REVIEW LETTERS
卷 109, 期 17, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.174102
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资金
- EPSRC (UK) [EP/D074789/1, EP/I029664/1]
- FWO-Flanders
- Engineering and Physical Sciences Research Council [EP/I029664/2, EP/I030158/1, EP/I029664/1, EP/D074789/1] Funding Source: researchfish
- EPSRC [EP/I029664/2, EP/D074789/1, EP/I029664/1, EP/I030158/1] Funding Source: UKRI
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 a 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 breakup to scroll wave turbulence happens. We present a simplified theory for this phenomenon and illustrate it with numerical examples.
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