Fractal surfaces of gold and platinum electrodeposits : Dimensionality determination by scanning tunneling microscopy

The structure of gold and platinum deposits grown on gold and platinum wire cathodes, respectively, by electroreduction of the corresponding oxide layers has been analyzed in terms of surface fractals by measuring the perimeter L and area A of intergranular voids. Perimeter and area were determined...

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Autores principales: Gómez-Rodríguez, J. M., Baró, A. M., Vázquez, L., Salvarezza, Roberto Carlos, Vara, J. M., Arvia, Alejandro Jorge
Formato: Articulo
Lenguaje:Inglés
Publicado: 1992
Materias:
Ciencias Exactas
Química
Fractales
Oro
Platino (Metal)
electroreduction
Microscopía de Túnel de Rastreo
electrodeposits
Precisión de la Medición Dimensional
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/79704
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-79704
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
Oro
Platino (Metal)
electroreduction
Microscopía de Túnel de Rastreo
electrodeposits
Precisión de la Medición Dimensional
spellingShingle Ciencias Exactas
Química
Fractales
Oro
Platino (Metal)
electroreduction
Microscopía de Túnel de Rastreo
electrodeposits
Precisión de la Medición Dimensional
Gómez-Rodríguez, J. M.
Baró, A. M.
Vázquez, L.
Salvarezza, Roberto Carlos
Vara, J. M.
Arvia, Alejandro Jorge
Fractal surfaces of gold and platinum electrodeposits : Dimensionality determination by scanning tunneling microscopy
topic_facet Ciencias Exactas
Química
Fractales
Oro
Platino (Metal)
electroreduction
Microscopía de Túnel de Rastreo
electrodeposits
Precisión de la Medición Dimensional
description The structure of gold and platinum deposits grown on gold and platinum wire cathodes, respectively, by electroreduction of the corresponding oxide layers has been analyzed in terms of surface fractals by measuring the perimeter L and area A of intergranular voids. Perimeter and area were determined from scanning tunneling microscopy (STM) topographic images of the deposit surfaces. Fractal behavior, L ∞ A<sup>D'/2</sup> with D'= 1.5 ± 0.1, is found for both platinum and gold deposits. From these measurements, the fractal dimension of the surfaces was 2.5. The D' value of the gold deposits decreases by aging in the electrolyte at 325 K as a consequence of surface diffusion processes.
format Articulo
Articulo
author Gómez-Rodríguez, J. M.
Baró, A. M.
Vázquez, L.
Salvarezza, Roberto Carlos
Vara, J. M.
Arvia, Alejandro Jorge
author_facet Gómez-Rodríguez, J. M.
Baró, A. M.
Vázquez, L.
Salvarezza, Roberto Carlos
Vara, J. M.
Arvia, Alejandro Jorge
author_sort Gómez-Rodríguez, J. M.
title Fractal surfaces of gold and platinum electrodeposits : Dimensionality determination by scanning tunneling microscopy
title_short Fractal surfaces of gold and platinum electrodeposits : Dimensionality determination by scanning tunneling microscopy
title_full Fractal surfaces of gold and platinum electrodeposits : Dimensionality determination by scanning tunneling microscopy
title_fullStr Fractal surfaces of gold and platinum electrodeposits : Dimensionality determination by scanning tunneling microscopy
title_full_unstemmed Fractal surfaces of gold and platinum electrodeposits : Dimensionality determination by scanning tunneling microscopy
title_sort fractal surfaces of gold and platinum electrodeposits : dimensionality determination by scanning tunneling microscopy
publishDate 1992
url http://sedici.unlp.edu.ar/handle/10915/79704
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bdutipo_str Repositorios
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