Controlling turbulence in a surface chemical reaction by time-delay autosynchronization

C. Beta, M. Bertram, A. S. Mikhailov, H. H. Rotermund, and G. Ertl
Phys. Rev. E 67, 046224 – Published 29 April 2003
PDFExport Citation

Abstract

A global time-delay feedback scheme is implemented experimentally to control chemical turbulence in the catalytic CO oxidation on a Pt(110) single crystal surface. The reaction is investigated under ultrahigh vacuum conditions by means of photoemission electron microscopy. We present results showing that turbulence can be efficiently suppressed by applying time-delay autosynchronization. Hysteresis effects are found in the transition regime from turbulence to homogeneous oscillations. At optimal delay time, we find a discontinuity in the oscillation period that can be understood in terms of an analytical investigation of a phase equation with time-delay autosynchronization. The experimental results are reproduced in numerical simulations of a realistic reaction model.

  • Received 10 January 2003

DOI:https://doi.org/10.1103/PhysRevE.67.046224

©2003 American Physical Society

Authors & Affiliations

C. Beta, M. Bertram, A. S. Mikhailov, H. H. Rotermund, and G. Ertl

  • Fritz-Haber-Institut der Max-Plack-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany

References (Subscription Required)

Click to Expand
Issue

Vol. 67, Iss. 4 — April 2003

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review E

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×