Excitability in the H2+O2 reaction on a Rh(110) surface induced by high coverages of coadsorbed potassium

Autores
Rafti, Matias; Imbihl, Ronald
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
By means of photoemission electron microscopy as spatially resolving method, the effect of high coverages of coadsorbed potassium (0.16 ≤ θK ≤ 0.21) on the dynamical behavior of the H2 + O2 reaction over a Rh(110) surface was investigated. We observe that the originally bistable system is transformed into an excitable system as evidenced by the formation of target patterns and spiral waves. At K coverages close to saturation (θK ≈ 0.21) mass transport of potassium with pulses is seen.
Fil: Rafti, Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Fil: Imbihl, Ronald. Leibniz Universität Hannover. Institut für Physikalische Chemie und Elektrochemie; Alemania
Materia
SURFACE SCIENCE
HYDROGEN OXIDATION
DISSIPATIVE STRUCTURES
PEEM
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/5099
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Excitability in the H2+O2 reaction on a Rh(110) surface induced by high coverages of coadsorbed potassiumRafti, MatiasImbihl, RonaldSURFACE SCIENCEHYDROGEN OXIDATIONDISSIPATIVE STRUCTURESPEEMhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1By means of photoemission electron microscopy as spatially resolving method, the effect of high coverages of coadsorbed potassium (0.16 ≤ θK ≤ 0.21) on the dynamical behavior of the H2 + O2 reaction over a Rh(110) surface was investigated. We observe that the originally bistable system is transformed into an excitable system as evidenced by the formation of target patterns and spiral waves. At K coverages close to saturation (θK ≈ 0.21) mass transport of potassium with pulses is seen.Fil: Rafti, Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; ArgentinaFil: Imbihl, Ronald. Leibniz Universität Hannover. Institut für Physikalische Chemie und Elektrochemie; AlemaniaAmerican Institute of Physics2014-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/5099Rafti, Matias; Imbihl, Ronald; Excitability in the H2+O2 reaction on a Rh(110) surface induced by high coverages of coadsorbed potassium; American Institute of Physics; Journal of Chemical Physics; 141; 21; 12-2014; 214707-2147070021-9606enginfo:eu-repo/semantics/altIdentifier/url/http://scitation.aip.org/content/aip/journal/jcp/141/21/10.1063/1.4903187info:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/doi/10.1063/1.4903187info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:47:36Zoai:ri.conicet.gov.ar:11336/5099instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:47:36.39CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Excitability in the H2+O2 reaction on a Rh(110) surface induced by high coverages of coadsorbed potassium
title Excitability in the H2+O2 reaction on a Rh(110) surface induced by high coverages of coadsorbed potassium
spellingShingle Excitability in the H2+O2 reaction on a Rh(110) surface induced by high coverages of coadsorbed potassium
Rafti, Matias
SURFACE SCIENCE
HYDROGEN OXIDATION
DISSIPATIVE STRUCTURES
PEEM
title_short Excitability in the H2+O2 reaction on a Rh(110) surface induced by high coverages of coadsorbed potassium
title_full Excitability in the H2+O2 reaction on a Rh(110) surface induced by high coverages of coadsorbed potassium
title_fullStr Excitability in the H2+O2 reaction on a Rh(110) surface induced by high coverages of coadsorbed potassium
title_full_unstemmed Excitability in the H2+O2 reaction on a Rh(110) surface induced by high coverages of coadsorbed potassium
title_sort Excitability in the H2+O2 reaction on a Rh(110) surface induced by high coverages of coadsorbed potassium
dc.creator.none.fl_str_mv Rafti, Matias
Imbihl, Ronald
author Rafti, Matias
author_facet Rafti, Matias
Imbihl, Ronald
author_role author
author2 Imbihl, Ronald
author2_role author
dc.subject.none.fl_str_mv SURFACE SCIENCE
HYDROGEN OXIDATION
DISSIPATIVE STRUCTURES
PEEM
topic SURFACE SCIENCE
HYDROGEN OXIDATION
DISSIPATIVE STRUCTURES
PEEM
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv By means of photoemission electron microscopy as spatially resolving method, the effect of high coverages of coadsorbed potassium (0.16 ≤ θK ≤ 0.21) on the dynamical behavior of the H2 + O2 reaction over a Rh(110) surface was investigated. We observe that the originally bistable system is transformed into an excitable system as evidenced by the formation of target patterns and spiral waves. At K coverages close to saturation (θK ≈ 0.21) mass transport of potassium with pulses is seen.
Fil: Rafti, Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Fil: Imbihl, Ronald. Leibniz Universität Hannover. Institut für Physikalische Chemie und Elektrochemie; Alemania
description By means of photoemission electron microscopy as spatially resolving method, the effect of high coverages of coadsorbed potassium (0.16 ≤ θK ≤ 0.21) on the dynamical behavior of the H2 + O2 reaction over a Rh(110) surface was investigated. We observe that the originally bistable system is transformed into an excitable system as evidenced by the formation of target patterns and spiral waves. At K coverages close to saturation (θK ≈ 0.21) mass transport of potassium with pulses is seen.
publishDate 2014
dc.date.none.fl_str_mv 2014-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/5099
Rafti, Matias; Imbihl, Ronald; Excitability in the H2+O2 reaction on a Rh(110) surface induced by high coverages of coadsorbed potassium; American Institute of Physics; Journal of Chemical Physics; 141; 21; 12-2014; 214707-214707
0021-9606
url http://hdl.handle.net/11336/5099
identifier_str_mv Rafti, Matias; Imbihl, Ronald; Excitability in the H2+O2 reaction on a Rh(110) surface induced by high coverages of coadsorbed potassium; American Institute of Physics; Journal of Chemical Physics; 141; 21; 12-2014; 214707-214707
0021-9606
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://scitation.aip.org/content/aip/journal/jcp/141/21/10.1063/1.4903187
info:eu-repo/semantics/altIdentifier/doi/
info:eu-repo/semantics/altIdentifier/doi/10.1063/1.4903187
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Institute of Physics
publisher.none.fl_str_mv American Institute of Physics
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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