| Texto completo | |
| Autor(es): |
Oliveira, B. M.
;
Batalioto, F.
;
Chand, M.
;
Campos, A. F. C.
;
Barbero, G.
;
Figueiredo Neto, A. M.
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Applied Physics; v. 137, n. 13, p. 8-pg., 2025-04-07. |
| Resumo | |
This study investigates the direct current behavior of a kerosene-based ferrofluid. Experimental data reveal linear current-voltage ( I - V ) characteristics, measured using slab-shaped cells with platinum electrodes. A polarization voltage of a few millivolts is observed, which is attributed to electric polarization effects. This phenomenon is interpreted through a model based on adsorption processes. The I - V characteristics are explained by the dissociation of surface ligands on the nanoparticles, generating ionic charges responsible for conduction. The dissociation process follows a chemical equilibrium described as A reversible arrow B (+) + C (-) , governed by dissociation and recombination coefficients consistent with standard kinetic models. (c) 2025 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). (AU) | |
| Processo FAPESP: | 16/24531-3 - Propriedades estruturais e biofísicas de lipoproteínas nativa e modificada |
| Beneficiário: | Antonio Martins Figueiredo Neto |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 14/50983-3 - INCT 2014: fluidos complexos |
| Beneficiário: | Antonio Martins Figueiredo Neto |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |