Results 11 to 20 of about 768,930 (284)

Scanning Impedance Microscopy: From Impedance Spectra to Impedance Images [PDF]

open access: yesMicroscopy Today, 2001
Abstract The properties and performance of electronic devices are crucially dependent on interface-related phenomena. The presence of interfaces can enable electronic device functionality (p-n diodes, solar cells); alternatively, non-functional interfaces can degrade device performance (ohmic vs. non-ohmic contacts).
Sergei V. Kalinin, Dawn A. Bonnell
openaire   +2 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

Impedance-matched hyperlens [PDF]

open access: yesOptics Letters, 2007
We propose an approach to optical imaging beyond the diffraction limit, based on transformation optics in concentric circular cylinder domains. The resulting systems allow image magnification and minimize reflection losses due to the impedance matching at the input or output boundaries.
Kildishev, Alexander V   +1 more
openaire   +5 more sources

Electrophysical properties of ceramic materials based on manganese-containing potassium polytitanates [PDF]

open access: yesЭлектрохимическая энергетика, 2022
The new materials obtained in the potassium polytitanate (PPT)–MnSO4 system by modifying PPT in aqueous solutions of manganese sulfate of various concentrations, followed by thermal treatment and annealing at 1080°C, were synthesized and studied.
Maksimova, Liliia Alekseevna   +5 more
doaj   +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

Impedance scaling and impedance control [PDF]

open access: yesProceedings of the 1997 Particle Accelerator Conference (Cat. No.97CH36167), 2002
When a machine becomes really large, such as the Very Large Hadron Collider (VLHC), of which the circumference could reach the order of megameters, beam instability could be an essential bottleneck. This paper studies the scaling of the instability threshold vs. machine size when the coupling impedance scales in a "normal" way.
Chou, W., Griffin, J.
openaire   +1 more source

A Novel Stator Turn Fault Detection Technique by Using Equivalent High Frequency Impedance

open access: yesIEEE Access, 2020
Stator turn fault is the most serious failure in the electrical machine drive which requires immediate detection techniques. Under such a turn fault, the fundamental change is that the high frequency (HF) impedance of the fault phase is significantly ...
Bo Wang   +3 more
doaj   +1 more source

Chromaticity dependence of the transverse effective impedance in the CERN Proton Synchrotron [PDF]

open access: yes, 2015
The current knowledge of the transverse beam coupling impedance of the CERN Proton Synchrotron (PS) has been established with beam-based measurements at different energies.
BIANCACCI, NICOLÒ   +7 more
core   +1 more source

An Effective EMTR-Based High-Impedance Fault Location Method for Transmission Lines

open access: yes, 2020
This paper summarizes the electromagnetic time reversal (EMTR) technique for fault location, and further numerically validates its effectiveness when the fault impedance is negligible. In addition, a specific EMTR model considering the fault impedance is
An, Jianwei   +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

Home - About - Disclaimer - Privacy