Resonance Pacemakers in Excitable Media | Zendy

Tabitha R. Chigwada | Zendy; P. Parmananda | Zendy; Kenneth Showalter | Zendy

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Resonance Pacemakers in Excitable Media

Author(s) -

Tabitha R. Chigwada,

P. Parmananda,

Kenneth Showalter

Publication year - 2006

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.96.244101

Subject(s) - resonance (particle physics) , forcing (mathematics) , excitable medium , amplitude , physics , steady state (chemistry) , mechanics , nuclear magnetic resonance , optics , atomic physics , chemistry , atmospheric sciences

Chemical waves are initiated in an excitable medium by resonance with local periodic forcing of the excitability. Experiments are carried out with a photosensitive Belousov-Zhabotinsky medium, in which the excitability is varied according to the intensity of the imposed illumination. Complex resonance patterns are exhibited as a function of the amplitude and frequency of the forcing. Local resonance-induced wave initiation transforms the medium globally from a quiescent excitable steady state to a periodic state of successive traveling waves

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