Results 11 to 20 of about 54,450 (268)

Transition Structure Between Coaxial Cable and Dielectric Rod Waveguide in Microwave Frequency

open access: yesFrontiers in Physics, 2021
The dielectric waveguide in THz and millimeter circuit is widely researched. However, it is rarely researched in a microwave frequency. In this article, a dielectric rod waveguide (DRW) is proposed with low transmission loss in microwave frequency.
Yin Li   +3 more
doaj   +1 more source

A Highly Thermostable In2O3/ITO Thin Film Thermocouple Prepared via Screen Printing for High Temperature Measurements

open access: yesSensors, 2018
An In2O3/ITO thin film thermocouple was prepared via screen printing. Glass additives were added to improve the sintering process and to increase the density of the In2O3/ITO films. The surface and cross-sectional images indicate that both the grain size
Yantao Liu   +9 more
doaj   +1 more source

Preparation and thermal volatility characteristics of In2O3/ITO thin film thermocouple by RF magnetron sputtering

open access: yesAIP Advances, 2017
In2O3/ITO thin film thermocouples for high temperature measurement (up to 1250 °C) were prepared by radio frequency magnetron sputtering method with different annealing temperatures from 1100 °C to 1250 °C. The changes with microstructure characteristics
Yantao Liu   +8 more
doaj   +1 more source

ERROR OF CONTROL OF ELECTRICAL INSULATION STRUCTURES BY DIELECTRIC ABSORPTION PARAMETERS ACCORDING TO THE CONCEPT OF UNCERTAINTY OF MEASUREMENTS

open access: yesElectrical engineering & Electromechanics, 2020
Introduction. Measurements on alternating current of dielectric absorption parameters – capacitance and dielectric loss tangent tgδ allow us to evaluate the quality of insulation of cables, electrical machines, transformers, etc., both at the ...
G. V. Bezprozvannych, I. A. Kostiukov
doaj   +1 more source

High-Sensitivity Enzymatic Glucose Sensor Based on ZnO Urchin-like Nanostructure Modified with Fe3O4 Magnetic Particles

open access: yesMicromachines, 2021
A novel and efficient enzymatic glucose sensor was fabricated based on Fe3O4 magnetic nanoparticles (Fe3O4MNPs)-modified urchin-like ZnO nanoflowers (ZnONFs). ZnONFs were hydrothermally synthesizing on a flexible PET substrate.
Qi Mao   +7 more
doaj   +1 more source

W-band Silicon dielectric measurement

open access: yes2014 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2014
In this paper, a free space based method for measurement of silicon dielectric constant is presented at W band frequencies. The dielectric constant of silicon is calculated using measured phase information of the transmitted signal (S21) through Silicon sheet of 500um thickness.
Seyyedesfahlan, Mirmehdi   +2 more
openaire   +1 more source

Challenges of Post-measurement Histology for the Dielectric Characterisation of Heterogeneous Biological Tissues

open access: yesSensors, 2020
The dielectric properties of biological tissues are typically measured using the open-ended coaxial probe technique, which is based on the assumption that the tissue sample is homogeneous.
Alessandra La Gioia   +2 more
doaj   +1 more source

Extremely Sensitive Microwave Microfluidic Dielectric Sensor Using a Transmission Line Loaded with Shunt LC Resonators

open access: yesSensors, 2021
In this paper, a very high sensitivity microwave-based planar microfluidic sensor is presented. Sensitivity enhancement is achieved and described theoretically and experimentally by eliminating any extra parasitic capacitance not contributing to the ...
Haneen Abdelwahab   +4 more
doaj   +1 more source

In-Situ Moisture Assessment in External Walls of Historic Building using Non-Destructive Methods

open access: yesEnvironmental and Climate Technologies, 2019
In-situ measurements of a case study building located in Riga old town near the river Daugava has been carried out in this work. Performed measurements are moisture level of historic masonry, and interstitial monitoring of temperature and relative ...
Freimanis Ritvars   +3 more
doaj   +1 more source

Design and Calibration of a Low-Cost SDI-12 Soil Moisture Sensor

open access: yesSensors, 2019
Water is the main limiting factor in agricultural production as well as a scarce resource that needs to be optimized. The measurement of soil water with sensors is an efficient way for optimal irrigation management.
Juan D. González-Teruel   +5 more
doaj   +1 more source

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