Spatiotemporal period doubling during the electrodissolution of iron

J. L. Hudson, J. Tabora, K. Krischer, I. G. Kevrekidis

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Abstract

We study the spatiotemporal dynamics of the potentiostatic electrodissolution of a circular iron electrode in sulfuric acid under conditions involving oscillations between active and passive states. We measure the spatially averaged dissolution rate (the current), and record spatially resolved surface patterns (the growth of a passivating film) with a video camera. As the potential is varied, the O(2) spatial symmetry of a base oscillatory state (high potentials) breaks giving rise to a period-doubled oscillation with apparent Z2⊕Zc2 spatiotemporal symmetry.

Original languageEnglish (US)
Pages (from-to)355-363
Number of pages9
JournalPhysics Letters A
Volume179
Issue number4-5
DOIs
StatePublished - Aug 16 1993

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Hudson, J. L., Tabora, J., Krischer, K., & Kevrekidis, I. G. (1993). Spatiotemporal period doubling during the electrodissolution of iron. Physics Letters A, 179(4-5), 355-363. https://doi.org/10.1016/0375-9601(93)90691-R