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

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

Research output: Contribution to journalArticlepeer-review

4 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 languageEnglish
Pages (from-to)1762-1767
Number of pages6
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume373
Issue number20
DOIs
StatePublished - 27 Apr 2009

ASJC Scopus subject areas

  • General Physics and Astronomy

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