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Science 27 October 1995:
Vol. 270. no. 5236, pp. 608 - 610
DOI: 10.1126/science.270.5236.608
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Reports

Imaging Pattern Formation in Surface Reactions from Ultrahigh Vacuum up to Atmospheric Pressures

H. H. Rotermund (1),  G. Haas,  R. U. Franz,  R. M. Tromp,  G. Ertl

Two optical methods that allow pattern formation to be investigated at an arbitrary pressure are here applied to image concentration patterns of adsorbed species associated with heterogeneous catalytic reactions. In contrast to most surface physical techniques, these methods are not restricted to high vacuum conditions and thus bridge the ``pressure gap.'' With carbon monoxide oxidation on a (110) surface of platinum as an example, the coupling mechanisms responsible for spatiotemporal self-organization in surface reactions were followed from reaction-diffusion control to the thermokinetic region, associated with phenomena not previously observed in pattern formation.


H. H. Rotermund, G. Haas, R. U. Franz, G. Ertl, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany.
R. M. Tromp, IBM Research Division, Yorktown Heights, NY 10598, USA.
(1) To whom correspondence should be addressed.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Sudden Onset of Pitting Corrosion on Stainless Steel as a Critical Phenomenon.
C. Punckt, M. Bolscher, H. H. Rotermund, A. S. Mikhailov, L. Organ, N. Budiansky, J. R. Scully, and J. L. Hudson (2004)
Science 305, 1133-1136
   Abstract »    Full Text »    PDF »
Oscillatory Thermomechanical Instability of an Ultrathin Catalyst.
F. Cirak, J. E. Cisternas, A. M. Cuitino, G. Ertl, P. Holmes, I. G. Kevrekidis, M. Ortiz, H. H. Rotermund, M. Schunack, and J. Wolff (2003)
Science 300, 1932-1936
   Abstract »    Full Text »    PDF »
Spatiotemporal Addressing of Surface Activity.
J. Wolff, A. G. Papathanasiou, I. G. Kevrekidis, H. H. Rotermund, and G. Ertl (2001)
Science 294, 134-137
   Abstract »    Full Text »    PDF »


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Science. ISSN 0036-8075 (print), 1095-9203 (online)