Influence of time delayed global feedback on pattern formation in oscillatory CO oxidation on Pt(1 1 0)

Autor:	Matthias Bertram, Harm Hinrich Rotermund, Michael Pollmann
Rok vydání:	2001
Předmět:	Photoemission electron microscopy Catalytic oxidation Chemistry Chemical physics Cluster (physics) General Physics and Astronomy Spatiotemporal pattern Pattern formation Physical and Theoretical Chemistry Synchronization Intensity (physics) Briggs–Rauscher reaction
Zdroj:	Chemical Physics Letters. 346:123-128
ISSN:	0009-2614
DOI:	10.1016/s0009-2614(01)00936-8
Popis:	Spatiotemporal pattern formation in the catalytic CO oxidation on Pt(1 1 0) is controlled by means of global delayed feedback applied through the gas phase. Using photoemission electron microscopy we have investigated the dynamical response of the system to a change of feedback intensity and time delay. Well defined synchronization and desynchronization regimes alternate when the delay is varied. In the case of synchronization the surface shows spatial homogeneous oscillations whereas in the case of desynchronization non-uniform patterns are observed. Furthermore two-phase clusters with period doubled local oscillations are studied. Phase balance between single cluster areas and breathing cluster modes are observed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::49f5d0e3e9b909c7d6eff050ebe6116d https://doi.org/10.1016/s0009-2614(01)00936-8 Zobrazit plný text záznamu Full Text from ScienceDirect