Elimination of spiral waves and spatiotemporal chaos by the pulse with a specific spatiotemporal configuration
Yuan Guo-Yong(袁国勇)a)†, Yang Shi-Ping(杨世平)a), Wang Guang-Rui(王光瑞)b), and Chen Shi-Gang(陈式刚)b)
a Department of Physics, Hebei Normal University, Shijiazhuang 050016, China; b Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
Abstract Spiral waves and spatiotemporal chaos are sometimes harmful and should be controlled. In this paper spiral waves and spatiotemporal chaos are successfully eliminated by the pulse with a very specific spatiotemporal configuration. The excited position D of spiral waves or spatiotemporal chaos is first recorded at an arbitrary time (t0). When the system at the domain D enters a recovering state, the external pulse is injected into the domain. If the intensity and the working time of the pulse are appropriate, spiral waves and spatiotemporal chaos can finally be eliminated because counter-directional waves can be generated by the pulse. There are two advantages in the method. One is that the tip can be quickly eliminated together with the body of spiral wave, and the other is that the injected pulse may be weak and the duration can be very short so that the original system is nearly not affected, which is important for practical applications.
Received: 21 August 2007
Revised: 16 October 2007
Accepted manuscript online:
Fund: Project
supported by the National Natural Science Foundation of China (Grant
No 10647127), the National Natural Science Foundation for Major
Projects, China (Grant No 10335010), and the Hebei Nature Science
Foundation Project, China (Grant No A2006000128)
Cite this article:
Yuan Guo-Yong(袁国勇), Yang Shi-Ping(杨世平), Wang Guang-Rui(王光瑞), and Chen Shi-Gang(陈式刚) Elimination of spiral waves and spatiotemporal chaos by the pulse with a specific spatiotemporal configuration 2008 Chin. Phys. B 17 1925
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