| dc.creator | Hernández-Creus, A. | |
| dc.creator | Bolzán, Agustín Eduardo | |
| dc.creator | Carro, P. | |
| dc.creator | González, S. | |
| dc.creator | Salvarezza, Roberto Carlos | |
| dc.creator | Arvia, Alejandro Jorge | |
| dc.date | 1993 | |
| dc.date | 2021-05-18T14:39:00Z | |
| dc.date.accessioned | 2023-07-15T01:45:02Z | |
| dc.date.available | 2023-07-15T01:45:02Z | |
| dc.identifier | http://sedici.unlp.edu.ar/handle/10915/118957 | |
| dc.identifier | issn:0013-4686 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/7459447 | |
| dc.description | The ac impedance behaviour of electrochemically grown dendritic Ag three-dimensional electrodeposits grown from aqueous Ag<sub>+</sub> ion containing solutions has been studied in the blocking regime covering the 1 ⩽ f ⩽ 10<sub>4</sub> Hz frequency range (ω = 2πf). These deposits exhibit fractal surface and non fractal mass (volume) characteristics. Impedance data displayed as log Z″ vs. log ω plots show two linear portions with different frequency dispersion exponents <α > = 0.95 ± 0.03 and <α > = 0.67 ± 0.05, respectively. The crossover frequency, ω<sub>λ</sub>, as determined from those plots, mainly depends on the electrolyte resistivity and, to a minor extent, on the Ag<sub>+</sub> ion electrodeposition charge. For ω > ω<sub>λ</sub>, the surface fractal dimension derived from the reciprocal relationship, D<sub>s</sub> = (1/α) + 1, is D<sub>s</sub> = 2.45 ± 0.1. This figure agrees with that obtained from the log (area) vs. log (volume) plots. | |
| dc.description | Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas | |
| dc.format | application/pdf | |
| dc.format | 1545-1549 | |
| 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 | Fractals | |
| dc.subject | Ag electrodes | |
| dc.subject | Rough metal surfaces | |
| dc.subject | Ac impedance | |
| dc.subject | Electrodeposition | |
| dc.title | An ac impedance study of dendritic silver three-dimensional electrodeposits | |
| dc.type | Articulo | |
| dc.type | Articulo | |
