Free ions in kerosene-based ferrofluid detected by impedance spectroscopy

Batalioto, Fernando; Barbero, Giovanni; Campos, Alex F.C.; Figueiredo Neto, Antonio M.

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dc.contributor.author	Batalioto, Fernando
dc.contributor.author	Barbero, Giovanni
dc.contributor.author	Campos, Alex F.C.
dc.contributor.author	Figueiredo Neto, Antonio M.
dc.date.accessioned	2022-06-27T10:45:35Z
dc.date.available	2022-06-27T10:45:35Z
dc.date.issued	2022-06-27T07:45:34Z
dc.identifier.citation	Phys. Chem. Chem. Phys., 2021, 23, 2819 - https://doi-org.ez67.periodicos.capes.gov.br/10.1039/D0CP05865C
dc.identifier.uri	http://repositorio.uspdigital.usp.br/handle/item/373
dc.description	Tables in text format and respectively data list in Mathematica data format (.nb). These data are about some experimental investigations performed on cells filled with a kerosene-based ferrofluids limited by different types of electrodes, by means of the impedance spectroscopy technique. The electrodes considered in our study are made of titanium, platinum, gold, brass and surgical steel. From the analysis of the data in the low-frequency range, dominated by the properties of the electrodes, we discovered that only gold electrodes behave in a manner different from the other electrodes. From the best fit of the experimental data the free-ions density is determined as well as their diffusion coefficient in kerosene. The estimated dielectric constant of the kerosene is in good agreement with the values reported in the literature. In the framework of our model, the surface conductivity of the electrodes has been also determined.
dc.description.sponsorship	MEPhI Academic Excellence Project
dc.description.sponsorship	Conselho Nacional de Desenvolvimento Científico e Tecnológico (INCT/CNPq)
dc.description.sponsorship	Fundação de Amparo à Pesquisa do Estado de São Paulo (INCT/FAPESP)
dc.description.sponsorship	Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (INCT/CAPES)
dc.description.sponsorship	Thematic Project (FAPESP)
dc.publisher	Universidade de São Paulo, Instituto de Física, Grupo de Fluidos Complexos.
dc.subject	Impedance spectroscopy
dc.subject	kerosene-based ferrofluid
dc.subject	Poisson-Nernst-Planck model
dc.title	Free ions in kerosene-based ferrofluid detected by impedance spectroscopy
dc.type	Dataset
dc.description.sponsorshipId	02.a03.21.0005
dc.description.sponsorshipId	465259/2014-6
dc.description.sponsorshipId	14/50983-3
dc.description.sponsorshipId	88887.136373/2017-00
dc.description.sponsorshipId	2016/24531-3