@article{38801, keywords = {co oxidation, spiral waves, chemical waves, propagation, bifurcation, complex, oscillations, surface, autowaves, catalytic-oxidation}, author = {Hartmann and Kevrekidis and Imbihl}, title = {Pattern formation in restricted geometries: The NO+CO reaction on Pt(100)}, abstract = { Employing photoelectron emission microscopy (PEEM) as the spatially resolving technique, pattern formation during the catalytic reduction of NO with CO has been investigated on a microstructured Pt(100)/Ti/TiO2 surface in the 10(-6) and 10(-5) mbar range. The microstructured surface-initially created by a lithographic technique-shows restricted Pt(100) domains of varying size and geometry, such as circles, rings, and dumbbells, surrounded by an inert Ti/TiO2 layer. It is shown that pattern formation during the NO+CO reaction, i.e., the propagation of pulses on the Pt(100) surface, is significantly affected by the size and the geometry of these domains. (C) 2000 American Institute of Physics. [S0021- 9606(00)70715-X]. }, year = {2000}, journal = {Journal of Chemical PhysicsJournal of Chemical Physics}, volume = {112}, pages = {6795-6803}, month = {04/2000}, isbn = {0021-9606}, language = {English}, }