Now showing items 1-10 of 1480
Fractal approach to ac impedance spectroscopy studies of ceramic materials
A novel fractal model for grain boundary regions of ceramic materials was developed. The model considers laterally inhomogeneous distribution of charge carriers in the vicinity of grain boundaries as the main cause of the ...
EIS characterisation of Ti anodic oxide porous films formed using modulated potential
(Elsevier Science SaLausanneSuíça, 2007)
Electrochemical impedance spectroscopy as a tool to estimate thickness in PB films
(Elsevier B.V., 2006-03-01)
The analysis of the faradaic impedance of electroactive films provides a characteristic point from which it is possible to estimate the thickness of thin films. Thus, electrochemical impedance spectroscopy was used in this ...
Using the electrochemical impedance spectroscopy to characterize carbon steel in biodiesel medium
Electrochemical impedance spectroscopy measurements using two carbon steel electrodes in soybean biodiesel medium, produced by methylic route, were performed in an electrochemical cell that allows positioning the two ...
Evaluation of the dielectric properties of biodiesel fuels produced from different vegetable oil feedstocks through electrochemical impedance spectroscopy
Biodiesel fuels were prepared from different vegetable oil sources (canola, soybean, sunflower, and corn) and studied through electrochemical impedance spectroscopy. The dielectric constant from these biofuels evidenced ...
Impedance spectroscopy analysis of TiO(2) thin film gas sensors obtained from water-based anatase colloids
(Elsevier B.V. Sa, 2009-06-04)
In this work impedance spectroscopy technique was employed in order to characterize the gas-sensing behavior of undoped titanium dioxide(TiO(2)) polycrystalline thin films. The electrical measurements were performed in a ...
Electrochemical studies of copper, copper-aluminium and copper-aluminium-silver alloys: Impedance results in 0.5M NaCl
(Elsevier B.V., 1995-11-01)
The electrochemical behaviour of Cu, Cu-Al and Cu-Al-Ag alloys in aqueous solutions of NaCl (0.5 M, pH = 3.00) was studied by means of voltammetric methods and electrochemical impedance spectroscopy. The surfaces were ...