Results 71 to 80 of about 112,571 (192)

Electrochemical studies of capacitance in cerium oxide thin films and its relationship to anionic and electronic defect densities [PDF]

open access: yes, 2009
Small polaron carrier density in epitaxial, doped CeO_2 thin films under low oxygen partial pressure was determined from electrochemically-measured capacitance after accounting for interfacial effects and shown to agree well with bulk ...
Chueh, William C., Haile, Sossina M.
core   +2 more sources

Design of a CMOS closed-loop system with applications to bio-impedance measurements [PDF]

open access: yes, 2010
This paper proposes a method for impedance measurements based on a closed-loop implementation of CMOS circuits. The proposed system has been conceived for alternate current excited systems, performing simultaneously driving and measuring functions ...
Rueda Rueda, Adoración   +1 more
core  

Intermediate temperature SOFC single cell test using Nd1.95NiO4+δ as cathode [PDF]

open access: yes, 2007
This work deals with SOFC single cell tests using neodymium nickelate Nd1.95NiO4+δ as cathode material. This MIEC oxide exhibits high values of both surface exchange coefficient (k) and oxygen diffusion coefficient (D*), as well as high electronic ...
Ansart, Florence   +7 more
core   +5 more sources

Investigation of Complex Impedance and Modulus Properties of Nd Doped 0.5BiFeO3-0.5PbTiO3 Multiferroic Composites

open access: yes, 2014
0.5BiNdxFe1-xO3-0.5PbTiO3 (x=0.05, 0.10, 0.15, 0.20) composites were successfully synthesized by a solid state reaction technique. At room temperature X-ray diffraction shows tetragonal structure for all concentrations of Nd doped 0.5BiFeO3-0.5PbTiO3 ...
Behera, Ajay Kumar   +4 more
core   +2 more sources

Silicon Derived from Glass Bottles as Anode Materials for Lithium Ion Full Cell Batteries. [PDF]

open access: yes, 2017
Every year many tons of waste glass end up in landfills without proper recycling, which aggravates the burden of waste disposal in landfill. The conversion from un-recycled glass to favorable materials is of great significance for sustainable strategies.
Ahmed, Kazi   +8 more
core   +1 more source

Evaluation of a sol–gel process for the synthesis of La1−xSrxMnO3+δ cathodic multilayers for solid oxide fuel cells [PDF]

open access: yes, 2004
Solid oxide fuel cells (SOFCs) are electrical energy conversion devices with high efficiency and low pollution. In order to increase performances of SOFCs at intermediate temperature (700–800 °C) and to decrease materials cost, an alternative sol–gel ...
Ansart, Florence   +4 more
core   +3 more sources

Characterization and Monitoring of Titanium Bone Implants with Impedance Spectroscopy

open access: yesSensors, 2020
Porous titanium is a metallic biomaterial with good properties for the clinical repair of cortical bone tissue, although the presence of pores can compromise its mechanical behavior and clinical use.
Alberto Olmo   +3 more
doaj   +1 more source

Electrical impedance spectroscopy for non-destructive meat freshness assessment

open access: yesDiscover Food
The quality of meat is inherently linked to the time of its departure from the processing facility, the conditions of transportation, and the methods of storage, all of which directly affect the meat's integrity.
Shiqian Wang   +3 more
doaj   +1 more source

Stochastic Impedance

open access: yes, 2019
The concept of impedance, which characterises the current response to a periodical driving, is introduced in the context of stochastic transport. In particular, we calculate the impedance for an exactly solvable model, namely the stochastic transport of ...
Cleuren, Bart, Proesmans, Karel
core   +1 more source

Electric Impedance Spectroscopy for Yogurt Processing.

open access: yesFood Science and Technology Research, 2000
The relationship between electric impedance spectroscopy (EIS) parameters and the conventional parameters of pH, acidity and hardness was discussed to evaluate the technique’s applicability as an on-line monitoring system of food processing automation, specifically yogurt processing. To determine pH, acidity and hardness, impedance (Z) obtained with an
Yutaka KITAMURA   +2 more
openaire   +2 more sources

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