A nonenzymatic electrochemical sensor is drop casted for sensitive and specific fenitrothion (FT) detection, where a glassy carbon electrode (GCE) modified by depositing an ink containing nitrogen–sulfur co-doped activated carbon-coated multiwalled nanotubes (NS-AC-MWCNTs). We provide method NS-AC-MWCNT synthesis as follows. First, polypyrrole coated on (PPy-MWCNT). Then, the PPy coating carbon...

Present work is an effort to reveal the junction properties of gold (Au) / Zinc oxide (ZnO) nanorods based Schottky diode by using the frequency dependent electrical properties. The most important electrical parameters such as conductance (G), resistance (R), capacitance (C) and impedance (Z) were studied as function of frequency across the series of AC voltages. Moreover, current density-volta...

Ruthenium-Carbon (Ru-C) nano-composite films were prepared by plasma-enhanced chemical vapor deposition (PECVD) and the effects of deposition conditions on the microstructure and electrical properies were investigated. The films consisted of agglomerated grains of 10 to 20 nm in diameter, in which Ru particles of 2.5 to 3.5 nm in diameter were dispersed in a C matrix. The C content of the films...

This paper reports on the development of electrically conductive nanocomposites containing multi-walled carbon nanotubes in an unsaturated polyester matrix. The resistivity of the liquid suspension during processing is used to evaluate the quality of the filler dispersion, which is also studied using optical microscopy. The electrical properties of the cured composites are analysed by AC impeda...

Ion transport processes in mixtures of N-butyl- N-methyl-pyrrolidinium bis(trifluoromethanesulfonyl)imide (BMP-TFSI) and lithium bis(trifluoromethanesulfonyl)imide (Li-TFSI) were characterized by ac impedance spectroscopy and pulsed field gradient NMR. Molar ratios x = n Li-TFSI/( n Li-TFSI + n BMP-TFSI) up to 0.377 could be achieved without crystallization. From the bulk ionic conductivity and...

Early detection of occlusal caries in children is challenging for the dentists, because of the morphology of pit and fissures. The aim of this study was to compare in vitro the diagnostic performance of low-powered magnification with light-emitting diode headlight (LPMLED) using ICDAS-II criteria and AC Impedance Spectroscopy (ACIS) device, on occlusal surfaces of primary molars. The occlusal s...

The ac/ac modular multilevel converter (MMC) application in the electric railway poses new challenges to stability of system. impedance analysis method is an effective way assess MMC-based systems. Due internal dynamics MMC, there are steady-state harmonic components arm currents and capacitor voltages, these have a significant impact on dynamic characteristics MMCs. To accurately predict syste...

Electrochemical impedance spectroscopy (EIS) is a versatile technique to characterize electrochemical systems satisfying causality, linearity and stationarity requirements. Odd Random Phase multisine EIS (ORP-EIS) can measure time-varying impedances for non-stationary processes. In this work, operando ORP-EIS introduced monitor the anodizing of aluminum, which nonlinear process, by superimposin...

In this work, Fluoropolymer-based ultrathin coating is evaluated as a protective barrier for Printed Circuit Board (PCB) against corrosion failures. Constant humidity with temperature cycling was applied external climatic conditions performance assessment through electrochemical AC impedance and DC potentiostatic measurements. Morphology of the before after test inspected using Optical, Scannin...

The ethanol (C2H5OH) vapor detection properties of a layer cubic spinel cobalt stannate as-prepared Co2SnO4 (denoted as CTOas), elaborated by low-cost spray pyrolysis method, were investigated before and after an annealing process. response layers under vapors different concentrations exhibited stable behavior in dry atmosphere at the optimum working temperatures. nanomaterials characterized tr...