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. 1973 Sep 7;181(4103):937-9.
doi: 10.1126/science.181.4103.937.

Scroll-shaped waves of chemical activity in three dimensions

Scroll-shaped waves of chemical activity in three dimensions

A T Winfree. Science. .

Abstract

Ferric ions catalyze the oxidation of malonate by bromate in acid solution, sometimes at a spatially uniform, steady rate, but sometimes in a self-regenerating three-dimensional wave which resembles a rotating scroll, often with its axis closed in a ring. In cross section perpendicular to the axis, one sees an involute spiral emerging from a thin cylindrical core. This "dissipative structure" organizes reaction stages periodically in space and time everywhere except along its rotation axis, which may therefore be a thermodynamically unique locus.

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