Results 1 to 10 of about 3,811,787 (369)

Measurement of relative permittivity of LTCC ceramic at different temperatures [PDF]

open access: goldAIP Advances, 2014
Devices based on LTCC (low-temperature co-fired ceramic) technology are more widely applied in high temperature environments, and the temperature-dependent properties of the LTCC material play an important role in measurements of the characteristics of ...
Qiulin Tan   +8 more
doaj   +6 more sources

A Flow-Through Microfluidic Relative Permittivity Sensor [PDF]

open access: yesMicromachines, 2020
In this paper, we present the design, simulation, fabrication and characterization of a microfluidic relative permittivity sensor in which the fluid flows through an interdigitated electrode structure.
Yaxiang Zeng   +3 more
doaj   +7 more sources

Meander-Line Slot-Loaded High-Sensitivity Microstrip Patch Sensor Antenna for Relative Permittivity Measurement [PDF]

open access: yesSensors, 2019
A high-sensitivity microstrip patch sensor antenna (MPSA) loaded with a meander-line slot (MLS) is proposed for the measurement of relative permittivity. The proposed MPSA was designed by etching the MLS along the radiating edge of the patch antenna, and
Junho Yeo, Jong-Ig Lee
doaj   +3 more sources

Gaseous density calculation by means of relative permittivity measurement

open access: goldMeasurement: Sensors, 2021
This study presents a gaseous density calculation method on the basis of relative permittivity measurement. The relative permittivity of a gas sample is measured by using a cylindrical microwave cavity resonator in wide temperature and pressure ranges ...
Yuya Kano, Naoki Kuramoto
doaj   +4 more sources

Influence of Solvent Relative Permittivity in Swab Spray Mass Spectrometry [PDF]

open access: yesMolecules
The influence of solvent properties on ion generation by swab spray ionization was investigated. The ability of a variety of solvents of different relative permittivity, surface tension, and viscosity to form a stable and reproducible electrospray was ...
Thomas Michael Muggli, Stefan Schürch
doaj   +4 more sources

Quantitative imaging of dielectric permittivity and tunability with a near-field scanning microwave microscope [PDF]

open access: yesRev. Sci. Instrum. vol. 71, 2751-2758 (2000), 2000
We describe the use of a near-field scanning microwave microscope to image the permittivity and tunability of bulk and thin film dielectric samples on a length scale of about 1 micron. The microscope is sensitive to the linear permittivity, as well as to
A. Stanishevsky   +8 more
core   +2 more sources

The negative index of refraction demystified [PDF]

open access: yesEuropean Journal of Physics, Vol. 23, no. 3, pp. 353-359 (2002), 2002
We study electromagnetic wave propagation in mediums in which the effective relative permittivity and the effective relative permeability are allowed to take any value in the upper half of the complex plane.
Akhlesh Lakhtakia   +5 more
core   +3 more sources

Imaging of Microwave Permittivity, Tunability, and Damage Recovery in (Ba,Sr)TiO3 Thin Films [PDF]

open access: yesAppl. Phys. Lett., vol. 75, no. 20, p. 3180 (1999), 1999
We describe the use of a near-field scanning microwave microscope to quantitatively image the dielectric permittivity and tunability of thin-film dielectric samples on a length scale of 1 micron. We demonstrate this technique with permittivity images and
Anlage, Steven M.   +7 more
core   +2 more sources

On the Bergman-Milton bounds for the homogenization of dielectric composite materials [PDF]

open access: yesOptics Communications 271, 470-474 (2007), 2005
The Bergman-Milton bounds provide limits on the effective permittivity of a composite material comprising two isotropic dielectric materials. These provide tight bounds for composites arising from many conventional materials.
Akhlesh Lakhtakia   +20 more
core   +2 more sources

Machine Learning-Based Classification of Abnormal Liver Tissues Using Relative Permittivity [PDF]

open access: yesSensors, 2022
The search for non-invasive, fast, and low-cost diagnostic tools has gained significant traction among many researchers worldwide. Dielectric properties calculated from microwave signals offer unique insights into biological tissue.
Poulami Samaddar   +14 more
doaj   +2 more sources

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