An analytical model for permittivity measurement of liquid dielectrics with a tubular sample holder

2020 ◽  
Vol 63 (2) ◽  
pp. 393-398
Author(s):  
André Rotava ◽  
Renato Abner Oliveira Silva ◽  
Maurício Henrique Costa Dias ◽  
José Carlos Araujo Santos
Keyword(s):  
Analytical Model ◽  
Sample Holder ◽  
Permittivity Measurement ◽  
Tubular Sample ◽  
Liquid Dielectrics

Evaluation of a novel tubular sample holder for dielectric measurements with Abdulnour's method

2013 ◽  
Author(s):  
Andre Rotava ◽  
Luiz E. P. Borges ◽  
Mauricio H. C. Dias ◽  
Jose C. A. Santos
Keyword(s):  
Sample Holder ◽  
Dielectric Measurements ◽  
Tubular Sample

Analysis of the Parallel-Disk Sample Holder for Dielectric Permittivity Measurement

1987 ◽  
Vol GE-25 (5) ◽  
pp. 534-540 ◽  
Author(s):  
Liang Shen ◽  
Herzl Marouni ◽  
Yu-xing Zhang ◽  
Xian-di Shi
Keyword(s):  
Dielectric Permittivity ◽  
Sample Holder ◽  
Parallel Disk ◽  
Permittivity Measurement ◽  
Disk Sample

Preparation of cross-sectional samples for near-surface TEM studies

1987 ◽  
Vol 45 ◽  
pp. 380-381
Author(s):  
R.C. Dickenson ◽  
K.R. Lawless
Keyword(s):  
Standard Sample ◽  
Surface Region ◽  
Specimen Preparation ◽  
Thick Sheet ◽  
Drill Bit ◽  
Sample Holder ◽  
Metal Interface ◽  
Cross Sectional ◽  
Near Surface ◽  
Cold Worked

In thermal oxidation studies, the structure of the oxide-metal interface and the near-surface region is of great importance. A technique has been developed for constructing cross-sectional samples of oxidized aluminum alloys, which reveal these regions. The specimen preparation procedure is as follows: An ultra-sonic drill is used to cut a 3mm diameter disc from a 1.0mm thick sheet of the material. The disc is mounted on a brass block with low-melting wax, and a 1.0mm hole is drilled in the disc using a #60 drill bit. The drill is positioned so that the edge of the hole is tangent to the center of the disc (Fig. 1) . The disc is removed from the mount and cleaned with acetone to remove any traces of wax. To remove the cold-worked layer from the surface of the hole, the disc is placed in a standard sample holder for a Tenupol electropolisher so that the hole is in the center of the area to be polished.

Problems with oxygen analysis in the system MgO-Al2O3-SiO2 with the electron microprobe

1992 ◽  
Vol 50 (2) ◽  
pp. 1624-1625
Author(s):  
Michel Fialin ◽  
Guy Rémond
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Electrostatic Charge ◽  
Carbon Layer ◽  
Sample Holder ◽  
Rock Matrix ◽  
Electrical Discharges ◽  
Thin Carbon ◽  
Beam Instabilities

Oxygen-bearing minerals are generally strong insulators (e.g. silicates), or if not (e.g. transition metal oxides), they are included within a rock matrix which electrically isolates them from the sample holder contacts. In this respect, a thin carbon layer (150 Å in our laboratory) is evaporated on the sections in order to restore the conductivity. For silicates, overestimated oxygen concentrations are usually noted when transition metal oxides are used as standards. These trends corroborate the results of Bastin and Heijligers on MgO, Al2O3 and SiO2. According to our experiments, these errors are independent of the accelerating voltage used (fig.l).Owing to the low density of preexisting defects within the Al2O3 single-crystal, no significant charge buildup occurs under irradiation at low accelerating voltage (< 10keV). As a consequence, neither beam instabilities, due to electrical discharges within the excited volume, nor losses of energy for beam electrons before striking the sample, due to the presence of the electrostatic charge-induced potential, are noted : measurements from both coated and uncoated samples give comparable results which demonstrates that the carbon coating is not the cause of the observed errors.

An analytical model for conflict dynamics

1997 ◽  
Vol 48 (10) ◽  
pp. 978-987
Author(s):  
N Gass
Keyword(s):  
Analytical Model

Simple quasi-two-dimensional analytical model to characterise the electric field in an LDD MOSFET

1990 ◽  
Vol 137 (4) ◽  
pp. 291
Author(s):  
R.H. Patel ◽  
D.-L. Kwong ◽  
N. Herr
Keyword(s):  
Electric Field ◽  
Analytical Model ◽  
Two Dimensional

ANALYTICAL MODEL OF SUPEREXCHANGE

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-911-C8-912
Author(s):  
Yu. V. Rakitin ◽  
V. T. Kalinnikov
Keyword(s):  
Analytical Model

Coding Algorithm for Grayscale Images – Design of Piecewise Uniform Quantizer with Golomb–Rice Code and Novel Analytical Model for Performance Analysis

Informatica ◽  
2017 ◽  
Vol 28 (4) ◽  
pp. 703-724 ◽  
Author(s):  
Nikola Simić ◽  
Zoran H. Perić ◽  
Milan S. Savić
Keyword(s):  
Performance Analysis ◽  
Analytical Model ◽  
Grayscale Images
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