Suppression of spirals and turbulence in inhomogeneous excitable media.
Suppression of spiral and turbulence in inhomogeneous media due to local heterogeneity with higher excitability is investigated numerically. When the inhomogeneity is small, control tactics by boundary periodic forcing (BPF) is effective against the existing spiral and turbulence. When the inhomogeneity of excitability is large, a rotating electric field (REF) is utilized to "smooth" regional heterogeneity based on driven synchronization. Consequently, a control approach combining BPF with REF is proposed to suppress the spiral and turbulence. The underlying mechanism of successful suppression is discussed in terms of dispersion relation.
Chen
Jiang-Xing
JX
Department of Physics, HangZhou Dianzi University, Hangzhou 310018, China. jxchen@hdu.edu.cn
Mao
Jun-Wen
JW
Hu
Bambi
B
Xu
Jiang-Rong
JR
He
Ya-Feng
YF
Li
Yuan
Y
Yuan
Xiao-Ping
XP