Modification of spatiotemporal pattern formation in an excitable medium by continuous variation of its intrinsic parameters: CO oxidation on Pt(110)

1994 ◽  
Vol 50 (11) ◽  
pp. 8043-8046 ◽  
Author(s):  
K. Asakura ◽  
J. Lauterbach ◽  
H. H. Rotermund ◽  
G. Ertl
Keyword(s):  
Pattern Formation ◽  
Co Oxidation ◽  
Excitable Medium ◽  
Continuous Variation ◽  
Spatiotemporal Pattern ◽  
Intrinsic Parameters ◽  
Spatiotemporal Pattern Formation

LEEM and MEM Studies of Spatiotemporal Pattern Formation

1998 ◽  
Vol 05 (06) ◽  
pp. 1233-1239 ◽  
Author(s):  
K. C. Rose ◽  
W. Engel ◽  
F. Meißen ◽  
A. J. Patchett ◽  
A. M. Bradshaw ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Pattern Formation ◽  
Reaction Diffusion ◽  
Low Energy ◽  
Spatiotemporal Pattern ◽  
Oxidation Of Co ◽  
Spatiotemporal Pattern Formation ◽  
Low Energy Electron ◽  
Stationary Conditions ◽  
Global Coupling

Spatiotemporal pattern formation has been investigated with low energy electron microscopy (LEEM) and mirror electron microscopy (MEM) during the catalytic oxidation of CO on Pt{110} under both oscillatory and stationary conditions. Due to higher resolution and richer contrast than in previous PEEM studies, it has been possible to investigate the details of the nucleation and propagation of reaction–diffusion fronts which make up the patterns, Further, new and more complex patterns have been discovered which demonstrate the importance of both global coupling and reaction-induced roughening.

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