Results 1 to 10 of about 113,750 (288)

A Review on Electrical Impedance Tomography Spectroscopy [PDF]

open access: yesSensors, 2020
Electrical Impedance Tomography Spectroscopy (EITS) enables the reconstruction of material distributions inside an object based on the frequency-dependent characteristics of different substances.
Juliana Padilha Leitzke, Hubert Zangl
doaj   +5 more sources

Electrical Impedance Spectroscopy for Monitoring Chemoresistance of Cancer Cells [PDF]

open access: yesMicromachines, 2020
Electrical impedance spectroscopy (EIS) is an electrokinetic method that allows for the characterization of intrinsic dielectric properties of cells. EIS has emerged in the last decade as a promising method for the characterization of cancerous cells ...
Lexi L. Crowell   +3 more
doaj   +4 more sources

Electrical Impedance Spectroscopy with Bacterial Biofilms: Neuronal-like Behavior. [PDF]

open access: yesNano Lett, 2023
Abstract Negative capacitance at low frequencies for neurons was first demonstrated in 1941 (Kenneth S. Cole) using extracellular electrodes. The phenomenon subsequently was explained by Cole using the Hodgkin-Huxley model and is due to the activity of voltage-gated potassium ion channels. We show that
Akabuogu EU   +4 more
europepmc   +3 more sources

Virtual Biopsy by Electrical Impedance Spectroscopy in Barrett's Carcinoma. [PDF]

open access: yesJ Gastrointest Cancer, 2022
Abstract Purpose Early detection of adenocarcinomas in the esophagus is crucial for achieving curative endoscopic therapy. Targeted biopsies of suspicious lesions, as well as four-quadrant biopsies, represent the current diagnostic standard.
Blößer S   +9 more
europepmc   +5 more sources

An Impedance Readout IC with Ratio-Based Measurement Techniques for Electrical Impedance Spectroscopy [PDF]

open access: yesSensors, 2022
This paper presents an error-tolerant and power-efficient impedance measurement scheme for bioimpedance acquisition. The proposed architecture measures the magnitude and the real part of the target complex impedance, unlike other impedance measurement ...
Song-I Cheon   +5 more
doaj   +2 more sources

Study of Paclitaxel-Treated HeLa Cells by Differential Electrical Impedance Flow Cytometry [PDF]

open access: yesBiosensors, 2014
This work describes the electrical investigation of paclitaxel-treated HeLa cells using a custom-made microfluidic biosensor for whole cell analysis in continuous flow.
Julie Kirkegaard   +3 more
doaj   +4 more sources

Electrical impedance spectroscopy in plant cold resistance: a review [PDF]

open access: yesPeerJ
Low-temperature stress compromises the integrity of plant cell membranes, leading to lipid phase transitions and increased membrane permeability, which subsequently induce physiological damage. However, conventional methods for assessing cold resistance,
Zhanyu Wang   +7 more
doaj   +3 more sources

Multichannel Electrical Impedance Spectroscopy Analyzer with Microfluidic Sensors [PDF]

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   +3 more sources

Grain size effect on the electrical response of SnO2 thin and thick film gas sensors [PDF]

open access: yesMaterials Research, 2009
Porous nano and micro crystalline tin oxide films were deposited by RF Magnetron Sputtering and doctor blade techniques, respectively. Electrical resistance and impedance spectroscopy measurements, as a function of temperature and atmosphere, were ...
Raluca Savu   +7 more
doaj   +6 more sources

Electrical Impedance Spectroscopy-Based Defect Sensing Technique in Estimating Cracks

open access: yesSensors, 2015
A defect sensing method based on electrical impedance spectroscopy is proposed to image cracks and reinforcing bars in concrete structures. The method utilizes the frequency-dependent behavior of thin insulating cracks: low-frequency electrical currents ...
Tingting Zhang   +3 more
doaj   +4 more sources

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