Fractal surfaces of gold and platinum electrodeposits : Dimensionality determination by scanning tunneling microscopy
- Autores
- Gómez-Rodríguez, J. M.; Baró, A. M.; Vázquez, L.; Salvarezza, Roberto Carlos; Vara, J. M.; Arvia, Alejandro Jorge
- Año de publicación
- 1992
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- 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 ∞ AD'/2 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.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA)
Facultad de Ciencias Exactas - Materia
-
Ciencias Exactas
Química
Fractales
Oro
Platino (Metal)
electroreduction
Microscopía de Túnel de Rastreo
electrodeposits
Precisión de la Medición Dimensional - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/79704
Ver los metadatos del registro completo
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Fractal surfaces of gold and platinum electrodeposits : Dimensionality determination by scanning tunneling microscopyGómez-Rodríguez, J. M.Baró, A. M.Vázquez, L.Salvarezza, Roberto CarlosVara, J. M.Arvia, Alejandro JorgeCiencias ExactasQuímicaFractalesOroPlatino (Metal)electroreductionMicroscopía de Túnel de RastreoelectrodepositsPrecisión de la Medición DimensionalThe 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.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA)Facultad de Ciencias Exactas1992-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf347-350http://sedici.unlp.edu.ar/handle/10915/79704enginfo:eu-repo/semantics/altIdentifier/issn/1089-5639info:eu-repo/semantics/altIdentifier/doi/10.1021/j100180a064info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:14:33Zoai:sedici.unlp.edu.ar:10915/79704Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:14:33.498SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Fractal surfaces of gold and platinum electrodeposits : Dimensionality determination by scanning tunneling microscopy |
| title |
Fractal surfaces of gold and platinum electrodeposits : Dimensionality determination by scanning tunneling microscopy |
| spellingShingle |
Fractal surfaces of gold and platinum electrodeposits : Dimensionality determination by scanning tunneling microscopy Gómez-Rodríguez, J. M. Ciencias Exactas Química Fractales Oro Platino (Metal) electroreduction Microscopía de Túnel de Rastreo electrodeposits Precisión de la Medición Dimensional |
| 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 |
| dc.creator.none.fl_str_mv |
Gómez-Rodríguez, J. M. Baró, A. M. Vázquez, L. Salvarezza, Roberto Carlos Vara, J. M. Arvia, Alejandro Jorge |
| author |
Gómez-Rodríguez, J. M. |
| author_facet |
Gómez-Rodríguez, J. M. Baró, A. M. Vázquez, L. Salvarezza, Roberto Carlos Vara, J. M. Arvia, Alejandro Jorge |
| author_role |
author |
| author2 |
Baró, A. M. Vázquez, L. Salvarezza, Roberto Carlos Vara, J. M. Arvia, Alejandro Jorge |
| author2_role |
author author author author author |
| dc.subject.none.fl_str_mv |
Ciencias Exactas Química Fractales Oro Platino (Metal) electroreduction Microscopía de Túnel de Rastreo electrodeposits Precisión de la Medición Dimensional |
| topic |
Ciencias Exactas Química Fractales Oro Platino (Metal) electroreduction Microscopía de Túnel de Rastreo electrodeposits Precisión de la Medición Dimensional |
| dc.description.none.fl_txt_mv |
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. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA) Facultad de Ciencias Exactas |
| 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. |
| publishDate |
1992 |
| dc.date.none.fl_str_mv |
1992-01 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/79704 |
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http://sedici.unlp.edu.ar/handle/10915/79704 |
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eng |
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eng |
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info:eu-repo/semantics/altIdentifier/issn/1089-5639 info:eu-repo/semantics/altIdentifier/doi/10.1021/j100180a064 |
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