Ions, adsorption and electric response of a ferrofluid cell

Autor:	F. Batalioto, A. M. Figueiredo Neto, G. Barbero
Rok vydání:	2022
Předmět:	ÍONS ELETRÔNICOS General Physics and Astronomy Physical and Theoretical Chemistry
Zdroj:	Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP
ISSN:	1463-9084 1463-9076
DOI:	10.1039/d1cp04724h
Popis:	We show that the electric response of a cell in the shape of a slab containing a ferrofluid (magnetic particles in kerosene) can be interpreted by means of a model based on the adsorption of ions from limiting surfaces. We report on three samples, identical in all aspects, but limited by electrodes in gold, platinum and titanium. For frequency larger than 1 kHz, the spectra of the real and imaginary parts of the total electrical impedance of the cells are identical. From this result it follows that in this frequency range the response of the cell is independent of the electrodes, which can be considered as blocking. In the low frequency region, up to 0.3 mHz, the response of the cells depends on the electrodes, as discussed recently by Batalioto
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f98725ffbae6fa7e0da5e940a3882ba https://doi.org/10.1039/d1cp04724h Zobrazit plný text záznamu