| Controlling Spiral Dynamics in Excitable Media by a Weakly Localized Pacing |
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| 引用本文： | 李炳伟 孙丽莉 陈斌 应和平. Controlling Spiral Dynamics in Excitable Media by a Weakly Localized Pacing[J]. 中国物理快报, 2007, 24(8): 2415-2418 |
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| 作者姓名： | 李炳伟 孙丽莉 陈斌 应和平 |
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| 作者单位： | [1]Zhejiang Institute of Modern Physics, Department of Physics, Zhejiang University, Hangzhou 310027 [2]Department of Physics, Hangzhou Normal University, Hangzhou 310027 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10675099. |
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| 摘 要： | 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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| 关 键 词： | 螺旋动力学 介质 振幅 谐波 |
| 收稿时间： | 2007-03-15 |
| 修稿时间： | 2007-03-15 |
Controlling Spiral Dynamics in Excitable Media by a Weakly Localized Pacing |
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| LI Bing-Wei,SUN Li-Li,CHEN Bin,YING He-Ping. Controlling Spiral Dynamics in Excitable Media by a Weakly Localized Pacing[J]. Chinese Physics Letters, 2007, 24(8): 2415-2418 |
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| Authors: | LI Bing-Wei SUN Li-Li CHEN Bin YING He-Ping |
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| Affiliation: | 1.Zhejiang Institute of Modern Physics, Department of Physics, Zhejiang University, Hangzhou 310027; 2.Department of Physics, Hangzhou Normal University, Hangzhou 310027 |
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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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