Publication: Spiral wave dynamics controlled by a square-shaped sensory domain
Issued Date
2004-05-01
Resource Type
ISSN
00092614
Other identifier(s)
2-s2.0-1942541466
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Mahidol University
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SCOPUS
Bibliographic Citation
Chemical Physics Letters. Vol.389, No.1-3 (2004), 140-144
Suggested Citation
On Uma Kheowan, Supichai Kantrasiri, Chananate Uthaisar, Vilmos Gáspár, Stefan C. Müller Spiral wave dynamics controlled by a square-shaped sensory domain. Chemical Physics Letters. Vol.389, No.1-3 (2004), 140-144. doi:10.1016/j.cplett.2004.03.077 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/21280
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Title
Spiral wave dynamics controlled by a square-shaped sensory domain
Abstract
Spiral waves rotating rigidly in a thin layer of the light-sensitive Belousov-Zhabotinsky (BZ) reaction are subjected to a time-dependent uniform illumination. A non-local feedback algorithm computes the illumination intensity to be proportional to the average wave activity within a square-shaped sensory domain. The investigations show a broad spectrum of dynamical responses which results in square- and cross-shaped trajectories of the spiral tip, including reflections at the virtual walls. The geometry of the sensory domain is crucial in determining size and shape of the tip trajectories. A theoretical approach is proposed to explain the observed phenomena. © 2004 Elsevier B.V. All rights reserved.