Scanning-tunneling-microscopy study on the growth mode of vapor-deposited gold films
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) co...
| Autores principales: | , , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
1992
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/83434 |
| Aporte de: |
| id |
I19-R120-10915-83434 |
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| 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 scanning tunneling microscopy Vapor Oro Fractales Vidrio electrosorption |
| spellingShingle |
Ciencias Exactas Química scanning tunneling microscopy Vapor Oro Fractales Vidrio electrosorption Herrasti, Pilar Ocón, Pilar Vázquez, Luis Salvarezza, Roberto Carlos Vara, J. M. Arvia, Alejandro Jorge Scanning-tunneling-microscopy study on the growth mode of vapor-deposited gold films |
| topic_facet |
Ciencias Exactas Química scanning tunneling microscopy Vapor Oro Fractales Vidrio electrosorption |
| 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. |
| format |
Articulo Articulo |
| author |
Herrasti, Pilar Ocón, Pilar Vázquez, Luis Salvarezza, Roberto Carlos Vara, J. M. Arvia, Alejandro Jorge |
| author_facet |
Herrasti, Pilar Ocón, Pilar Vázquez, Luis Salvarezza, Roberto Carlos Vara, J. M. Arvia, Alejandro Jorge |
| author_sort |
Herrasti, Pilar |
| title |
Scanning-tunneling-microscopy study on the growth mode of vapor-deposited gold films |
| title_short |
Scanning-tunneling-microscopy study on the growth mode of vapor-deposited gold films |
| title_full |
Scanning-tunneling-microscopy study on the growth mode of vapor-deposited gold films |
| title_fullStr |
Scanning-tunneling-microscopy study on the growth mode of vapor-deposited gold films |
| title_full_unstemmed |
Scanning-tunneling-microscopy study on the growth mode of vapor-deposited gold films |
| title_sort |
scanning-tunneling-microscopy study on the growth mode of vapor-deposited gold films |
| publishDate |
1992 |
| url |
http://sedici.unlp.edu.ar/handle/10915/83434 |
| work_keys_str_mv |
AT herrastipilar scanningtunnelingmicroscopystudyonthegrowthmodeofvapordepositedgoldfilms AT oconpilar scanningtunnelingmicroscopystudyonthegrowthmodeofvapordepositedgoldfilms AT vazquezluis scanningtunnelingmicroscopystudyonthegrowthmodeofvapordepositedgoldfilms AT salvarezzarobertocarlos scanningtunnelingmicroscopystudyonthegrowthmodeofvapordepositedgoldfilms AT varajm scanningtunnelingmicroscopystudyonthegrowthmodeofvapordepositedgoldfilms AT arviaalejandrojorge scanningtunnelingmicroscopystudyonthegrowthmodeofvapordepositedgoldfilms |
| bdutipo_str |
Repositorios |
| _version_ |
1764820488614313988 |