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Controlling Spiral Dynamics in Excitable Media by a Weakly Localized Pacing |
| LI Bing-Wei1;SUN Li-Li2;CHEN Bin2;YING He-Ping1 |
| 1Zhejiang Institute of Modern Physics, Department of Physics, Zhejiang University, Hangzhou 3100272Department of Physics, Hangzhou Normal University, Hangzhou 310027 |
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| Cite this article: |
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LI Bing-Wei, SUN Li-Li, CHEN Bin et al 2007 Chin. Phys. Lett. 24 2415-2418 |
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Abstract Spiral dynamics controlled by a weakly localized pacing around the spiral tip is investigated. Numerical simulations show two distinct characteristics when the pacing is applied with the weak amplitude for suitable frequencies: for a rigidly rotating spiral, a transition from rigid rotation to meandering motion is observed, and for unstable spiral waves, spiral breakup can be prevented.
Successfully preventing spiral breakup is relevant to the modulation of the tip trajectory induced by a localized pacing.
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| Keywords:
82.40.Ck
47.54.-r
05.45.Ac
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Received: 15 March 2007
Published: 25 July 2007
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| PACS: |
82.40.Ck
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(Pattern formation in reactions with diffusion, flow and heat transfer)
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47.54.-r
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(Pattern selection; pattern formation)
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05.45.Ac
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(Low-dimensional chaos)
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