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

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

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...

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Veröffentlicht in:Chaos (Woodbury, N.Y.) N.Y.), 1997-12, Vol.7 (4), p.731-737
Hauptverfasser: Lázár, Attila, Försterling, Horst-Dieter, Farkas, Henrik, Simon, Péter, Volford, András, Noszticzius, Zoltán
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container_end_page 737
container_issue 4
container_start_page 731
container_title Chaos (Woodbury, N.Y.)
container_volume 7
creator Lázár, Attila
Försterling, Horst-Dieter
Farkas, Henrik
Simon, Péter
Volford, András
Noszticzius, Zoltán
description 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.
doi_str_mv 10.1063/1.166270
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title Waves of excitation on nonuniform membrane rings, caustics, and reverse involutes
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