Fluctuations during catalytic CO oxidation on different crystal planes of a Pt field emitter

verfasst von

Yu Suchorski, J. Beben, R. Imbihl

Abstract

Fluctuations during catalytic CO oxidation on the (100), (111) and (113) planes of the [100]-oriented Pt field emitter tip are studied by FEM (field electron microscope). Intensity profiles and local time series are obtained by digitizing the image brightness in a rectangular probing window oriented along the [110]-direction. From the local time series the probability density distributions as well as the auto-and cross-correlation functions are computed. The results demonstrate that the fluctuation behavior is quite different on the different facets of a field emitter tip. On the facets studied here, the fluctuations observed in the monostable and in the bistable region of the reaction exhibit substantial differences in the degree of time-and spatial correlation.

Organisationseinheit(en)

Institut für Physikalische Chemie und Elektrochemie

Externe Organisation(en)

University of Wroclaw

Typ

Artikel

Journal

Progress in surface science

Band

59

Seiten

343-354

Anzahl der Seiten

12

ISSN

0079-6816

Publikationsdatum

09.1998

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Allgemeine Chemie, Physik der kondensierten Materie, Oberflächen und Grenzflächen, Oberflächen, Beschichtungen und Folien

Elektronische Version(en)

https://doi.org/10.1016/S0079-6816(98)00060-4 (Zugang: Geschlossen)