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Hematocrit measurement by dielectric spectroscopy
Proceedings of the Second Joint 24th Annual Conference and the Annual Fall Meeting of the Biomedical Engineering Society] [Engineering in Medicine and Biology, 2002Based on permittivity changes, a new method to measure hematocrit (HCT) in extracorporeal blood systems is presented. Human blood samples were tested at different HCT levels pairing the values of permittivity change, obtained by means of a commercial impedance analyzer, with traditional centrifugation measurements.
Ernesto F. Treo +4 more
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High-frequency dielectric measurements
IEEE Instrumentation & Measurement Magazine, 2010The demands on dielectric material measurements have increased over the years as electrical components have been miniaturized and device frequency bands have increased. Well-characterized dielectric measurements on thin materials are needed for circuit design, minimization of crosstalk, and characterization of signal-propagation speed.
James Baker-Jarvis +2 more
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Measurement of wetting of dielectrics
Electrical Engineering, 1934Penetrability studies have been made to measure the wetting of dielectrics, in an effort to secure information on the electrical characteristics of impregnated fibrous structures. The results of these studies are discussed in this article, which includes studies of the penetration of water, benzene, and several insulating materials.
D. A. McLean, G. T. Kohman
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Temperature Calibration in Dielectric Measurements
Journal of Thermal Analysis and Calorimetry, 2001Dielectric experiments are often performed in non-isothermal conditions. Thus, there is a difference between the temperature of the sample and the sensor temperature. In this work we propose and compare three temperature calibration methods based on the detection of transitions or relaxations: i) the melting of high-purity metallic standards (indium ...
Mano, J. F. +3 more
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Measurement of the Dielectric Properties of Paper
NIP & Digital Fabrication Conference, 1998Unlike de resistivities of non-impact printing papers that are routinely measured, their dielectric properties are seldom considered. The do resistivity alone does not predict the behavior of paper very well when paper passes through a transfer nip. If the electric field changes with time, all anisotropic frequency-dependent electrical properties of ...
Simula, S. +5 more
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Dielectric property measurement of PLA
2016 IEEE International Conference on Electro Information Technology (EIT), 20163D printing technology provides an affordable method of prototyping antennas. To design antennas with this technology it is necessary to characterize the materials used for printing precisely in terms of their permittivity and conductivity. Two major groups of materials for antenna design are dielectric and conductive materials.
Eric Huber +5 more
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International Comparison of Dielectric Measurements
IEEE Transactions on Instrumentation and Measurement, 1964Three materials, i.e.,fused silica, glass, and alumina, were selected for comparison based on known or expected homogeneity, isotropy, and stability. Measurements were made by the three Government laboratories (U. K., U. S. A., and Canada), both in the radio-frequency range, using capacitor-type holders either with or without an air gap, and at ...
Bussey, H. E. +6 more
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Measurement of the permittivity of dielectrics
Measurement Techniques, 19681. Our experimental investigations have shown that the accuracy in measuring the polarization parameters and determining the e value depends mainly on the error in calibrating the polarizing and the analyzing devices, which, in our case, did not exceed 5–7%. 2.
S. I. Pozdnyak, G. N. Anikeenko
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