Zobrazeno 1 - 10
of 148
pro vyhledávání: '"F. Batalioto"'
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
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, id
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f98725ffbae6fa7e0da5e940a3882ba
https://doi.org/10.1039/d1cp04724h
https://doi.org/10.1039/d1cp04724h
Akademický článek
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Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
We investigate the nonlinear behavior of the electric impedance of a kerosene-based ferrofluid (FF) sample subjected to an ac electric voltage of amplitude ranging from 10 mV to 3 V in the frequency range 6.3 mHz, 100 kHz. The FF sample was inserted
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87a5a1a3bd7ca426340139ecdb445b51
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
The influence of the free ions on the electric response of cells filled with kerosene-based ferrofluids in the low-frequency region is explored. The experimental investigations have been performed on cells limited by different types of electrodes, wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::805628fabb1644a1d740510ed719da7d
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
We investigate the electric response of a kerosene cell containing magnetic nanoparticles. The cell is submitted to an external potential difference and its impedance is measured for increasing values of the potential amplitude. The analysis of the e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4fc7765a718b11e32a4fad8100f7ce42
The Poisson-Nernst-Planck model for electrolytic solutions is generalized to take into account the difference in the diffusion coefficients and in the electric charge of the ions dissolved in an insulating liquid. The electric impedance of the cell i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0404dee39c4291732a24d497e4a0609a
http://hdl.handle.net/11583/2954632
http://hdl.handle.net/11583/2954632
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
We investigate the electric response of an electrolytic cell of water and KCl, limited by gold electrodes, to derive information on the role of the electrodes in the spectra of the real and imaginary parts of the electric impedance of the cell. Our e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20f9dc75183580a79776867f7098203a
Publikováno v:
Journal of Electroanalytical Chemistry. 874:114452
The electric response of samples of kerosene containing magnetic particles to an ac electric field is experimentally investigated by means of the impedance spectroscopy technique in the frequency range 3mHz, 25 kHz. The samples have different thickne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff5611174c9f3e92f35f27218deb91a8
https://doi.org/10.1016/j.jelechem.2020.114452
https://doi.org/10.1016/j.jelechem.2020.114452
We propose a model to interpret the concentration dependence of the ζ-potential of a suspension of silica nanoparticles of spherical shape in an electrolytic solution. The model is based on the numerical solution of Poisson-Boltzmann equation, in sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44b7cde9ae6101ee0a10f4f8401ceca7
http://hdl.handle.net/11583/2734523
http://hdl.handle.net/11583/2734523
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
The effective electric charge of a nanoparticle in an ionic magnetic colloidal system (an ionic ferrofluid) is determined by using the impedance spectroscopy technique. The electric response of the samples to a harmonic external electric field excita
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b648da0824f51dca3a7b709a351c64d
http://hdl.handle.net/11583/2669731
http://hdl.handle.net/11583/2669731