Self-affine fractal vapour-deposited gold surfaces characterization by scanning tunnelling microscopy

The morphological evolution of the surfaces of gold deposits grown from the vapour on smooth glass under nonequilibrium conditions and incident angle near substrate normal is studied at the nanometer level by scanning tunnelling microscopy. For an average film thickness equal to or greater than 500...

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Detalles Bibliográficos
Autores principales:	Salvarezza, Roberto Carlos, Vázquez, L., Herrasti, P., Ocón, P., Vara, J. M., Arvia, Alejandro Jorge
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	1992
Materias:	Ciencias Exactas Química Fractales scanning tunneling microscopy Oro Vapor de agua self-affine fractals Nanopartículas
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/80010 https://iopscience.iop.org/article/10.1209/0295-5075/20/8/011
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-80010
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 scanning tunneling microscopy Oro Vapor de agua self-affine fractals Nanopartículas
spellingShingle	Ciencias Exactas Química Fractales scanning tunneling microscopy Oro Vapor de agua self-affine fractals Nanopartículas Salvarezza, Roberto Carlos Vázquez, L. Herrasti, P. Ocón, P. Vara, J. M. Arvia, Alejandro Jorge Self-affine fractal vapour-deposited gold surfaces characterization by scanning tunnelling microscopy
topic_facet	Ciencias Exactas Química Fractales scanning tunneling microscopy Oro Vapor de agua self-affine fractals Nanopartículas
description	The morphological evolution of the surfaces of gold deposits grown from the vapour on smooth glass under nonequilibrium conditions and incident angle near substrate normal is studied at the nanometer level by scanning tunnelling microscopy. For an average film thickness equal to or greater than 500 nm, the interface thickness (ξ) reaches a steady state. Under these conditions, ξ depends on the scan length (L) as ξ ∝ L<sup>α</sup> with α = 0.35 ± 0.05 for L > d<sub>s</sub>, where d<sub>s</sub> is the columnar size, and α = 0.89 ± 0.05 for L < d<sub>s</sub>. These results indicate that the growing surface spontaneously reaches a steady state and it can be described as a self-affine fractal. The value of α for L > ds agrees with the prediction of ballistic deposition models without restructuring, whereas that for L < d<sub>s</sub> exceeds the prediction of ballistic models including restructuring.
format	Articulo Articulo
author	Salvarezza, Roberto Carlos Vázquez, L. Herrasti, P. Ocón, P. Vara, J. M. Arvia, Alejandro Jorge
author_facet	Salvarezza, Roberto Carlos Vázquez, L. Herrasti, P. Ocón, P. Vara, J. M. Arvia, Alejandro Jorge
author_sort	Salvarezza, Roberto Carlos
title	Self-affine fractal vapour-deposited gold surfaces characterization by scanning tunnelling microscopy
title_short	Self-affine fractal vapour-deposited gold surfaces characterization by scanning tunnelling microscopy
title_full	Self-affine fractal vapour-deposited gold surfaces characterization by scanning tunnelling microscopy
title_fullStr	Self-affine fractal vapour-deposited gold surfaces characterization by scanning tunnelling microscopy
title_full_unstemmed	Self-affine fractal vapour-deposited gold surfaces characterization by scanning tunnelling microscopy
title_sort	self-affine fractal vapour-deposited gold surfaces characterization by scanning tunnelling microscopy
publishDate	1992
url	http://sedici.unlp.edu.ar/handle/10915/80010 https://iopscience.iop.org/article/10.1209/0295-5075/20/8/011
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Self-affine fractal vapour-deposited gold surfaces characterization by scanning tunnelling microscopy

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