Influence of time delayed global feedback on pattern formation in oscillatory CO oxidation on Pt(110)

被引:31
作者
Pollmann, M [1 ]
Bertram, M [1 ]
Rotermund, HH [1 ]
机构
[1] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany
关键词
D O I
10.1016/S0009-2614(01)00936-8
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
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. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:123 / 128
页数:6
相关论文
共 29 条
[1]   Controlling turbulence in the complex Ginzburg-Landau equation [J].
Battogtokh, D ;
Mikhailov, A .
PHYSICA D, 1996, 90 (1-2) :84-95
[2]  
Bertram M, 2001, PHYS REV E, V63, DOI 10.1103/PhysRevE.63.066102
[3]   Feedback-controlled forcing of meandering spiral waves in an open gel reactor [J].
Braune, M ;
Engel, H .
PHYSICAL REVIEW E, 2000, 62 (05) :5986-5988
[4]   COMPOUND ROTATION OF SPIRAL WAVES IN ACTIVE MEDIA WITH PERIODICALLY MODULATED EXCITABILITY [J].
BRAUNE, M ;
ENGEL, H .
CHEMICAL PHYSICS LETTERS, 1993, 211 (06) :534-540
[5]   Synchronization in a system of globally coupled oscillators with time delay [J].
Choi, MY ;
Kim, HJ ;
Kim, D ;
Hong, H .
PHYSICAL REVIEW E, 2000, 61 (01) :371-381
[6]   STRONG RESONANCES OF SPATIALLY DISTRIBUTED OSCILLATORS - A LABORATORY TO STUDY PATTERNS AND DEFECTS [J].
COULLET, P ;
EMILSSON, K .
PHYSICA D, 1992, 61 (1-4) :119-131
[7]   COUPLED CHEMICAL OSCILLATORS IN CATALYTIC-OXIDATION OF CO ON PD(110) SURFACES [J].
EHSASI, M ;
FRANK, O ;
BLOCK, JH ;
CHRISTMANN, K .
CHEMICAL PHYSICS LETTERS, 1990, 165 (2-3) :115-119
[8]   INFLUENCE OF GLOBAL COUPLING THROUGH THE GAS-PHASE ON THE DYNAMICS OF CO OXIDATION ON PT(110) [J].
FALCKE, M ;
ENGEL, H .
PHYSICAL REVIEW E, 1994, 50 (02) :1353-1359
[9]   Control of chaotic spatiotemporal spiking by time-delay autosynchronization [J].
Fanceschini, G ;
Bose, S ;
Schöll, E .
PHYSICAL REVIEW E, 1999, 60 (05) :5426-5434
[10]   FEEDBACK-CONTROLLED DYNAMICS OF MEANDERING SPIRAL WAVES [J].
GRILL, S ;
ZYKOV, VS ;
MULLER, SC .
PHYSICAL REVIEW LETTERS, 1995, 75 (18) :3368-3371