Complex Periodic Spirals and Line-Defect Turbulence in a Chemical System

Jin Sung Park, Kyoung Jin Lee

Research output: Contribution to journalArticle

55 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)5393-5396
Number of pages4
JournalPhysical Review Letters
Issue number25
Publication statusPublished - 1999 Dec 20

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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