Two mechanisms of spiral-pair-source creation in excitable media

Y. Biton; A. Rabinovitch; I. Aviram; D. Braunstein

doi:10.1016/j.physleta.2009.03.030

Two mechanisms of spiral-pair-source creation in excitable media

Y. Biton
, A. Rabinovitch
, I. Aviram
, D. Braunstein

Department of Physics

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Two new modes of generating spiral pairs in an excitable medium have been found. They depend on a geometrical structure (GS) inside the medium. This may be formed e.g. as a result of scars or fibrosis in the heart tissue, or artificially built in a chemical reaction substrate. Both sources involve a GS composed of a circular "convergent lens" bounded by two opaque "walls". One mode can be induced by a single wave and behaves as a "flip-flop" type of a limit cycle. The other mode is generated by a train of plane waves impinging on the GS, and is created at the focus of the converging wave-fragments.

Original language	English
Pages (from-to)	1762-1767
Number of pages	6
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	373
Issue number	20
DOIs	https://doi.org/10.1016/j.physleta.2009.03.030
State	Published - 27 Apr 2009

ASJC Scopus subject areas

General Physics and Astronomy

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10.1016/j.physleta.2009.03.030

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AU - Biton, Y.

AU - Rabinovitch, A.

AU - Aviram, I.

AU - Braunstein, D.

PY - 2009/4/27

Y1 - 2009/4/27

N2 - Two new modes of generating spiral pairs in an excitable medium have been found. They depend on a geometrical structure (GS) inside the medium. This may be formed e.g. as a result of scars or fibrosis in the heart tissue, or artificially built in a chemical reaction substrate. Both sources involve a GS composed of a circular "convergent lens" bounded by two opaque "walls". One mode can be induced by a single wave and behaves as a "flip-flop" type of a limit cycle. The other mode is generated by a train of plane waves impinging on the GS, and is created at the focus of the converging wave-fragments.

AB - Two new modes of generating spiral pairs in an excitable medium have been found. They depend on a geometrical structure (GS) inside the medium. This may be formed e.g. as a result of scars or fibrosis in the heart tissue, or artificially built in a chemical reaction substrate. Both sources involve a GS composed of a circular "convergent lens" bounded by two opaque "walls". One mode can be induced by a single wave and behaves as a "flip-flop" type of a limit cycle. The other mode is generated by a train of plane waves impinging on the GS, and is created at the focus of the converging wave-fragments.

UR - https://www.scopus.com/pages/publications/77950594628

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SN - 0375-9601

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JO - Physics Letters, Section A: General, Atomic and Solid State Physics

JF - Physics Letters, Section A: General, Atomic and Solid State Physics

IS - 20

ER -

Two mechanisms of spiral-pair-source creation in excitable media

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