Results 31 to 40 of about 199,086 (341)

Permittivity measurement of minerals

open access: yesJournal of Physics: Conference Series, 2013
An electromagnetic logging tool moves along a borehole to measure continuously the complex dielectric permittivity of the rock formation. Dielectric properties of formation fluids and minerals are required to interpret the log. Methods to measure mineral permittivities are reviewed and experimental results are described for various particulate minerals.
A Clarke, G H Meeten, V J Anderson
openaire   +2 more sources

Effect of Permittivity on the Electric-Field-Driven Rotation Dynamics in a Liquid Film

open access: yesApplied Mechanics, 2022
Applying a constant electric field on a suspended film of liquid that carries an electric current, either by the transport of ions or surface charges, induces a rotation in the film. This system is known as “liquid film motor”.
Reza Shirsavar   +6 more
doaj   +1 more source

Synthesis and Dielectric Properties of Magnesium Silicate Hydrate Deposited With SnO2

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2020
In this study, the dielectric properties of SnO2 coated Magnesium Silicate Hydrate (MSH) pigments were evaluated. The SnO2 coated MSH pigments were obtained by chemical reduction method with the 3:7 SnO2/MSH ratio by weight. The structural and dielectric
Yüksel Akınay
doaj   +1 more source

Transmission Studies of Left-handed Materials

open access: yes, 2001
Left-handed materials are studied numerically using an improved version of the transfer-matrix method. The transmission, reflection, the phase of the reflection and the absorption are calculated and compared with experiments for both single split-ring ...
C. M. Soukoulis   +19 more
core   +1 more source

Dielectric Properties of PEEK/PEI Blends as Substrate Material in High-Frequency Circuit Board Applications

open access: yesMicromachines
Substrate materials for printed circuit boards must meet ever-increasing requirements to keep up with electronics technology development. Especially in the field of high-frequency applications such as radar and cellular broadcasting, low permittivity and
Tim Scherzer   +5 more
doaj   +1 more source

Dielectric properties of deformed early potatoes

open access: yesResearch in Agricultural Engineering, 2008
The permittivity of potato tissue was studied during uniaxial compression of cylindrical specimens prepared from two early varieties. Both the real and the imaginary permitivity components were determined repeatedly during the loading and unloading tests.
J. Blahovec
doaj   +1 more source

Silicon Micromachined High-contrast Artificial Dielectrics for Millimeter-wave Transformation Optics Antennas

open access: yes, 2017
Transformation optics methods and gradient index electromagnetic structures rely upon spatially varied arbitrary permittivity. This, along with recent interest in millimeter-wave lens-based antennas demands high spatial resolution dielectric variation ...
Bai, Wenlong   +4 more
core   +1 more source

Electrical permittivity and resistivity time lapses of multiphase DNAPLs in a lab test [PDF]

open access: yes, 2014
Dense Non-Aqueous Phase Liquids (DNAPLs) induce variation in electromagnetic characteristics of the ground e.g. electric permittivity and resistivity.
Orlando, Luciana, Renzi, Beatrice
core   +2 more sources

Chemo-Electrical Signal Transduction by Using Stimuli-Responsive Polymer Gate-Modified Field Effect Transistor

open access: yesChemosensors, 2014
A glucose-responsive polymer brush was designed on a gold electrode and exploited as an extended gate for a field effect transistor (FET) based biosensor.
Akira Matsumoto   +6 more
doaj   +1 more source

Spectral theory of electromagnetic scattering by a coated sphere

open access: yes, 2017
In this paper, we introduce an alternative representation of the electromagnetic field scattered from a homogeneous sphere coated with a homogeneous layer of uniform thickness.
Forestiere, Carlo   +2 more
core   +1 more source

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