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dc.date.accessioned 2021-07-07T17:53:38Z
dc.date.available 2021-07-07T17:53:38Z
dc.date.issued 1996
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/121346
dc.description.abstract Structural changes of silver terrace domains in aqueous perchloric acid solution at constant anodic current density (j) and room temperature were followed by in situ scanning tunneling microscopy sequential imaging. For j<15 μA cm-2 silver electrodissolution proceeds at step edges without roughening. Conversely, for j<15 μA cm-2 the silver surface becomes progressively rougher to attain, after a certain critical time, a steady roughness. In this case, the dynamic scaling theory applied to STM images indicates that the dissolving silver surface can be described as a self-affine fractal surface with a static roughening exponent α50.9060.06, and a dynamic roughening exponent β50.3660.08. The value of a is consistent with the relevant role played by surface diffusion in the silver electrodissolution mechanism, whereas the value of b is slightly higher than those derived from growth models incorporating surface diffusion. The difference in the value of β would reflect the influence of either the electric field or energetic barriers at step edges on the rate of roughness development. en
dc.language en es
dc.subject Scanning tunneling microscopy es
dc.subject Silver crystal surfaces es
dc.subject Kinetics es
dc.title In situ sequential STM imaging of structural changes resulting from the electrodissolution of silver crystal surfaces in aqueous perchloric acid en
dc.type Articulo es
sedici.identifier.other 10.1103/physrevb.53.10217 es
sedici.identifier.issn 1098-0121 es
sedici.identifier.issn 1550-235X es
sedici.title.subtitle The roughening kinetics en
sedici.creator.person Vela, María Elena es
sedici.creator.person Andreasen, Gustavo es
sedici.creator.person Salvarezza, Roberto Carlos es
sedici.creator.person Hernández Creus, A. es
sedici.creator.person Arvia, Alejandro Jorge es
sedici.subject.materias Ciencias Exactas es
sedici.subject.materias Química es
sedici.description.fulltext true es
mods.originInfo.place Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas es
sedici.subtype Articulo es
sedici.rights.license Creative Commons Attribution 4.0 International (CC BY 4.0)
sedici.rights.uri http://creativecommons.org/licenses/by/4.0/
sedici.description.peerReview peer-review es
sedici.relation.journalTitle Physical Review B es
sedici.relation.journalVolumeAndIssue vol. 53, no. 15 es

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Creative Commons Attribution 4.0 International (CC BY 4.0) Except where otherwise noted, this item's license is described as Creative Commons Attribution 4.0 International (CC BY 4.0)