Results 21 to 30 of about 6,970,357 (236)

Noninvasive Solution for Electrochemical Impedance Spectroscopy on Metallic Works of Art [PDF]

open access: yes, 2012
Metallic works of art of cultural relevance are continuously subjected to corrosion as the environment becomes increasingly polluted. A fast and simple method to in situ assess the conservation conditions is therefore required.
Parvis, Marco   +5 more
core   +1 more source

Impedance analysis of oil conductivity and pixel non-uniformity in electrowetting displays

open access: yesResults in Physics, 2020
The electrical conductivity of the oil film is a key property of electrowetting displays (EWD) and its evolution probably correlates to the device lifetime. In this report, we fabricate an EWD device and measure its electrical impedance spectrum.
Bojian Xu   +6 more
doaj   +1 more source

Fractional-order model of a non-linear inductor [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2019
This paper adopts a fractional calculus perspective to describe a non-linear electrical inductor. First, the electrical impedance spectroscopy technique is used for measuring the impedance of the device.
A.M. Lopes, J.A. Tenreiro Machado
doaj   +1 more source

High-power CMOS current driver with accurate transconductance for electrical impedance tomography [PDF]

open access: yes, 2014
Current drivers are fundamental circuits in bioimpedance measurements including electrical impedance tomography (EIT). In the case of EIT, the current driver is required to have a large output impedance to guarantee high current accuracy over a wide ...
Demosthenous, A   +7 more
core   +1 more source

On the selection of excitation signals for the fast spectroscopy of electrical bioimpedance

open access: yesJournal of Electrical Bioimpedance, 2018
Different excitation signals are applicable in the wideband impedance spectroscopy in general. However, in electrical bioimpedance (EBI) measurements, there are limitations that set specific demands on the properties of the excitation signals. This paper
Ojarand Jaan, Min Mart
doaj   +1 more source

Multichannel Electrical Impedance Spectroscopy Analyzer with Microfluidic Sensors

open access: yesSensors, 2019
Impedance spectroscopy is a common approach in assessing passive electrical properties of biological matter. However, several problems appear in microfluidic devices in connection with the requirement for high sensitivity of signal acquisition from small
Jaan Ojarand, Mart Min, Ants Koel
doaj   +1 more source

Cervical cancer prognosis and diagnosis using electrical impedance spectroscopy

open access: yesJournal of Electrical Bioimpedance, 2021
Electrical impedance spectroscopy (EIS) has been used as an adjunct to colposcopy for cervical cancer diagnosis for many years, Currently, the template match method is employed for EIS measurements analysis, where the measured EIS spectra are compared ...
Li Ping   +3 more
doaj   +1 more source

Study of Epithelial Cells on Polypyrrole based Conducting Polymers using Electrochemical Impedance Spectroscopy [PDF]

open access: yes, 2005
PhDPolypyrrole (PPy) is a conjugated polymer that displays special electronic properties including conductivity. It may be electrogenerated with the incorporation of any anionic species including negatively charged biological molecules such as proteins
Ateh, Davidson Day
core   +4 more sources

Experimental Study of Electrical Properties of Pharmaceutical Materials by Electrical Impedance Spectroscopy

open access: yesApplied Sciences, 2020
The physicochemical characterization of pharmaceutical materials is essential for drug discovery, development and evaluation, and for understanding and predicting their interaction with physiological systems.
Manuel Vázquez-Nambo   +6 more
doaj   +1 more source

Electrical Properties of Un-doped and Doped EuTiO3-based Perovskites [PDF]

open access: yes, 2013
Un-doped and doped EuTiO3 (ET) ceramics were prepared in 5%H2/95%N2 and N2 atmospheres at various temperatures (1350, 1450 and 1500 oC). For un-doped ET, higher pellet density (above 90%) and larger grain sized ceramics were obtained from the higher ...
WANG, JING
core   +6 more sources

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