Self-affine fractal electrodeposited gold surfaces : Characterization by scanning tunneling microscopy

The morphological evolution of columnar gold electrodeposits grown at 100 nm s <sup>−1</sup> by electroreducing a gold oxide layer on a gold cathode has been studied at a nanometer level by scanning tunneling microscopy. The interface thickness (ξ) depends on the scan length (L) as ξ∝ L...

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Autores principales: Vázquez, L., Salvarezza, Roberto Carlos, Ocón, P., Herrasti, P., Vara, J. M., Arvia, Alejandro Jorge
Formato: Articulo
Lenguaje:Inglés
Publicado: 1994
Materias:
Ciencias Exactas
Química
Fractales
electrodeposits
electroreduction
Oro
scanning tunneling microscopy
Óxidos
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/85650
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-85650
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Química
Fractales
electrodeposits
electroreduction
Oro
scanning tunneling microscopy
Óxidos
spellingShingle Ciencias Exactas
Química
Fractales
electrodeposits
electroreduction
Oro
scanning tunneling microscopy
Óxidos
Vázquez, L.
Salvarezza, Roberto Carlos
Ocón, P.
Herrasti, P.
Vara, J. M.
Arvia, Alejandro Jorge
Self-affine fractal electrodeposited gold surfaces : Characterization by scanning tunneling microscopy
topic_facet Ciencias Exactas
Química
Fractales
electrodeposits
electroreduction
Oro
scanning tunneling microscopy
Óxidos
description The morphological evolution of columnar gold electrodeposits grown at 100 nm s <sup>−1</sup> by electroreducing a gold oxide layer on a gold cathode has been studied at a nanometer level by scanning tunneling microscopy. The interface thickness (ξ) depends on the scan length (L) as ξ∝ L <sup>α</sup> with α=0.49±0.07 for L > d<sub>s</sub>, where d<sub>s</sub> is the average top columnar size, and α=0.90±0.07 for L < d<sub>s</sub>. These results prove that the growing surface can be described as a self-affine fractal for length scales greater than the columnar size. Conversely, the columnar surface approaches the behavior of an Euclidean surface.
format Articulo
Articulo
author Vázquez, L.
Salvarezza, Roberto Carlos
Ocón, P.
Herrasti, P.
Vara, J. M.
Arvia, Alejandro Jorge
author_facet Vázquez, L.
Salvarezza, Roberto Carlos
Ocón, P.
Herrasti, P.
Vara, J. M.
Arvia, Alejandro Jorge
author_sort Vázquez, L.
title Self-affine fractal electrodeposited gold surfaces : Characterization by scanning tunneling microscopy
title_short Self-affine fractal electrodeposited gold surfaces : Characterization by scanning tunneling microscopy
title_full Self-affine fractal electrodeposited gold surfaces : Characterization by scanning tunneling microscopy
title_fullStr Self-affine fractal electrodeposited gold surfaces : Characterization by scanning tunneling microscopy
title_full_unstemmed Self-affine fractal electrodeposited gold surfaces : Characterization by scanning tunneling microscopy
title_sort self-affine fractal electrodeposited gold surfaces : characterization by scanning tunneling microscopy
publishDate 1994
url http://sedici.unlp.edu.ar/handle/10915/85650
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