Open AccessA ring-like heterogeneous medium-induced self-sustained target waves in excitable media
Author(s) -
Tang Dong-Ni,
Xu Zhang,
Wei Ren,
Tang Guo-Ning
Publication year - 2010
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.59.5313
Subject(s) - excitable medium , physics , perturbation (astronomy) , traveling wave , mechanics , ring (chemistry) , classical mechanics , mathematical analysis , quantum mechanics , chemistry , mathematics , organic chemistry
The formation of self-sustained target wave in a two-dimensional excitable medium into which a ring-like heterogeneous excitable medium is introduced is investigated. The numerical results show that the initial perturbation can produce a self-sustained target wave in an excitable medium when the excitabilities of two media and the size of the ring are appropriately chosen. The physical mechanism responsible for the formation of self-sustained target wave is analyzed.