Results 1 to 10 of about 344,328 (138)

Microfabricated Thin Film Impedance Sensor & AC Impedance Measurements [PDF]

open access: yesSensors, 2010
Thin film microfabrication technique was employed to fabricate a platinum based parallel-electrode structured impedance sensor. Electrochemical impedance spectroscopy (EIS) and equivalent circuit analysis of the small amplitude (±5 mV) AC impedance measurements (frequency range: 1 MHz to 0.1 Hz) at ambient temperature were carried out.
Yu, Liu
openaire   +3 more sources

Electrical properties of breast cancer cells from impedance measurement of cell suspensions [PDF]

open access: yes, 2010
Impedance spectroscopy of biological cells has been used to monitor cell status, e.g. cell proliferation, viability, etc. It is also a fundamental method for the study of the electrical properties of cells which has been utilised for cell identification ...
A Sinclair   +9 more
core   +1 more source

An active interferometric method for extreme impedance on-wafer device measurements [PDF]

open access: yes, 2017
Nano-scale devices and high-power transistors present extreme impedances, which are far removed from the 50-Ω reference impedance of conventional test equipment, resulting in a reduction in the measurement sensitivity as compared with impedances close to
Aaen, Peter H.   +3 more
core   +1 more source

Determination of Electrical Parameters for Skin during Galvanic Skin Reflex from Continuous Measurement [PDF]

open access: yes, 1988
Skin impedance satisfies the Cole-Cole arc's law. The change of skin impedance during GSR (Galvanic Skin Reflex) can be expressed by the change of equivalent parallel resistance approximately.
Yamamoto, Tatsuma, Yamamoto, Yoshitake
core   +1 more source

Comparison of Howland and General Impedance Converter (GIC) circuit based current sources for bio-impedance measurements [PDF]

open access: yes, 2010
The current source is a key component in bio-impedance measurement systems. The accuracy of the current source can be measured in terms of its output impedance together with other parameters, with certain applications demanding extremely high output ...
A Zarafshani   +11 more
core   +1 more source

Setup for shot noise measurements in carbon nanotubes [PDF]

open access: yes, 2006
We have constructed a noise measurement setup for high impedance carbon nanotube samples. Our setup, working in the frequency range of 600 - 900 MHz, takes advantage of the fact that the shot noise power is reasonably large for high impedance sources so ...
Hakonen, Pertti   +5 more
core   +3 more sources

Influence of normal and radial contributions of local current density on local electrochemical impedance spectroscopy. [PDF]

open access: yes, 2012
A new tri-electrode probe is presented and applied to local electrochemical impedance spectroscopy (LEIS) measurements. As opposed to two-probe systems, the three-probe one allows measurement not only of normal, but also of radial contributions of local ...
Annergren   +49 more
core   +4 more sources

The effect of inrush transients on pv inverter's grid impedance measurement based on inter-harmonic injection [PDF]

open access: yes, 2010
This paper addresses a cause for false tripping of photovoltaic inverters with antiislanding protection based on impedance measurement with inter-harmonic injection. Earlier discussions about tripping problems happening when several devices are doing the
Bhattacharyya, S.   +5 more
core   +4 more sources

Acousto-electrical speckle pattern in Lorentz force electrical impedance tomography [PDF]

open access: yes, 2015
Ultrasound speckle is a granular texture pattern appearing in ultrasound imaging. It can be used to distinguish tissues and identify pathologies. Lorentz force electrical impedance tomography is an ultrasound-based medical imaging technique of the tissue
Catheline, Stefan   +7 more
core   +4 more sources

Pseudomonas aeruginosa can be detected in a polymicrobial competition model using impedance spectroscopy with a novel biosensor [PDF]

open access: yes, 2014
Electrochemical Impedance Spectroscopy (EIS) is a powerful technique that can be used to elicit information about an electrode interface. In this article, we highlight six principal processes by which the presence of microorganisms can affect impedance ...
Connolly, Patricia   +2 more
core   +3 more sources

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