Nucleation of spiral wave patterns at surface defects.
The nucleation of spiral waves at a surface defect during catalytic CO oxidation on Pt(110) has been studied with a low energy electron microscope system. It is found that reaction fronts originate from a boundary layer between the defect and the surrounding Pt(110) area. The findings are corroborated by numerical simulations within a realistic reaction-diffusion model of the surface reaction.
Institut für Physik und Physikalische Technologien, Technische Universität Clausthal, Leibnizstr. 4, 38678 Clausthal-Zellerfeld, Germany.
Han
H
Wei
G
G
Lilienkamp
Jörn
J
Davidsen
Markus
M
Bär
Ronald
R
Imbihl