| dc.creator | Herrasti, Pilar | |
| dc.creator | Ocón, Pilar | |
| dc.creator | Vázquez, Luis | |
| dc.creator | Salvarezza, Roberto Carlos | |
| dc.creator | Vara, J. M. | |
| dc.creator | Arvia, Alejandro Jorge | |
| dc.date | 1992-05-15 | |
| dc.date | 2019-10-17T11:55:16Z | |
| dc.identifier | http://sedici.unlp.edu.ar/handle/10915/83434 | |
| dc.identifier | issn:1050-2947 | |
| dc.description | The growth of gold deposits on smooth glass from the vapor phase at 30 nm<sup>−1</sup> s <sup>−1</sup>, 298 K, and incident angle near the substrate normal covering the 30—1000 nm average film thickness (h¯) range is investigated through scanning tunneling microscopy (STM) complemented with oxygen-adatom electrosorption measurements. The STM images of the deposits reveal a columnar structure resulting from a mechanism involving shadowing and surface diffusion. Quantitative data are obtained directly from STM images. The height distribution <i>N(h)</i> of the interface obeys an <i>N(h)∝ e <sup>−kh</sup></i> relationship. For h¯<500 nm, the interface thickness (ξ) increases as a power law with h¯, whereas for h¯ > 500 nm it reaches a steady state. Under the latter condition, ξ depends on the STM scan length (S) as ξ∝ S<sup>α</sup> with a close to 1/3. These results indicate that the growth process of the gold deposits results in compact nonfractal structures with self-affine fractal surfaces, as predicted by ballistic deposition models. However, the latter fail to describe some aspects of the morphology and evolution of thin vapor-deposited gold films on this substrate. | |
| dc.description | Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas | |
| dc.description | Facultad de Ciencias Exactas | |
| dc.format | application/pdf | |
| dc.format | 7440-7451 | |
| dc.language | en | |
| dc.rights | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
| dc.rights | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) | |
| dc.subject | Ciencias Exactas | |
| dc.subject | Química | |
| dc.subject | scanning tunneling microscopy | |
| dc.subject | Vapor | |
| dc.subject | Oro | |
| dc.subject | Fractales | |
| dc.subject | Vidrio | |
| dc.subject | electrosorption | |
| dc.title | Scanning-tunneling-microscopy study on the growth mode of vapor-deposited gold films | |
| dc.type | Articulo | |
| dc.type | Articulo | |
