Recent numerical simulations on two-dimensional model reaction-diffusion systems have revealed unusual spiral waves with complex oscillations and turbulent patterns, both mediated by "line defects." Here we report the observation of such patterns in a laboratory experiment for the first time; complex spiral waves with period-2 and period-3 and turbulent patterns tilled with a tangle of line defects are observed and their spatiotemporal dynamics are elucidated by line defects. Since line defects are a generic property of complex periodic media, the observed patterns arc expected to arise in a broad class of complex periodic systems.
|Number of pages||4|
|Journal||Physical Review Letters|
|Publication status||Published - 1999 Dec 20|
ASJC Scopus subject areas
- Physics and Astronomy(all)