Wave Initiation through Spatiotemporally Controllable Perturbations

J. Wolff, A. G. Papathanasiou, H. H. Rotermund, G. Ertl, M. A. Katsoulakis, X. Li, I. G. Kevrekidis

Research output: Contribution to journalArticlepeer-review


We study the initiation of pulses and fronts in a two-dimensional catalytic reaction-diffusion system: CO oxidation on Pt(110). Using a computer-controlled mobile focused laser beam, we impart various patterns (in space and time) of localized temperature “kicks” to the surface. We explore, and also rationalize through modeling, the cooperativity of such individually subcritical perturbations in both the excitable and the bistable regime.

Original languageEnglish (US)
Pages (from-to)4
Number of pages1
JournalPhysical review letters
Issue number14
StatePublished - 2003

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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