Waves of excitation on nonuniform membrane rings, caustics, and reverse involutes

Attila Lázár, Horst Dieter Försterling, Henrik Farkas, Péter Simon, András Volford, Zoltán Noszticzius

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Chemical wave experiments on concentric nonuniform membrane rings are presented together with their theoretical description. A new technique is applied to create a slow inner and a fast outer zone in an annular membrane. An abrupt qualitative change of the wave profile was observed while decreasing the wave velocity in the inner zone. This phenomenon and all the experimental wave profiles can be adequately described by assuming that waves are involutes of a relevant caustic. A possible connection with recent models of atrial flutter is also set forth.

Original languageEnglish
Pages (from-to)731-737
Number of pages7
JournalChaos
Volume7
Issue number4
DOIs
Publication statusPublished - Dec 1997

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Mathematical Physics
  • Physics and Astronomy(all)
  • Applied Mathematics

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