Results 31 to 40 of about 2,227,209 (298)

Measurement Error Estimation for Capacitive Voltage Transformer by Insulation Parameters

Energies, 2017
Measurement errors of a capacitive voltage transformer (CVT) are relevant to its equivalent parameters for which its capacitive divider contributes the most. In daily operation, dielectric aging, moisture, dielectric breakdown, etc., it will exert mixing
Bin Chen, Lin Du, Kun Liu, Xianshun Chen, Fuzhou Zhang, Feng Yang   +5 more
doaj   +1 more source

A Novel Method for the Accurate Measurement of Soil Infiltration Line by Portable Vector Network Analyzer

Sensors, 2021
Accurate measurement of soil infiltration lines is very important for agricultural irrigation systems. It can help monitor the irrigation of soil to control irrigation amounts and promote crop growth.
Xiaobin Li, Zhengguang Liu, Lei Lin, Hao Fan, Xingyu Liang, Jinghui Xu   +5 more
doaj   +1 more source

Evaluation of Microwave Characterization Methods for Additively Manufactured Materials

Designs, 2019
Additive manufacturing (AM) has become more important and common in recent years. Advantages of AM include the ability to rapidly design and fabricate samples much faster than traditional manufacturing processes and to create complex internal geometries.
Chih-Kuo Lee, Jack McGhee, Christos Tsipogiannis, Shiyu Zhang, Darren Cadman, Athanasios Goulas, Tom Whittaker, Reza Gheisari, Daniel Engstrom, John (Yiannis) Vardaxoglou, William Whittow   +10 more
doaj   +1 more source

Design of Substrate-Integrated Waveguide Loading Multiple Complementary Open Resonant Rings (CSRRs) for Dielectric Constant Measurement

Sensors, 2020
In order to solve the low-sensitivity problem of the dielectric constant with the resonant cavity method, a sensor based on a substrate-integrated waveguide structure loaded with a multi-complementary open resonant ring is proposed.
Honggang Hao, Dexu Wang, Zhu Wang
doaj   +1 more source

Resonant cavity method for broadband dielectric measurements [PDF]

, 1987
The project investigates the Cavity Perturbation Method (CRM) and design of a coaxial resonator covering a wide frequency band from 2.5 to 11.5 GHz. Using the published analyses for coaxial cavities, original theoretical analysis of Cavity Perturbation ...
Muhammad-Ahmad, Makki El-Tayyid
core  

Dielectric spectroscopy of Tobacco Mosaic Virus [PDF]

, 2003
The dielectric properties of the Tobacco Mosaic Virus (TMV) have been measured using time domain dielectric spectroscopy (TDDS) in the temperature range from 1 to 40 jC. A single dielectric dispersion is observed in the MHz range.
Feldman, Yuri, Ermolina, I., Milner, J.J., Green, Nicolas G, Ermolina, Irina, Green, N. G., Morgan, Hywel, Feldman, Y., Milner, J. J., Green, N.G., Morgan, H., Milner, Joel J   +11 more
core   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

An Open-Resonator Sensor for Measuring the Dielectric Properties of Antarctic Ice

Sensors, 2019
In this paper, the theory behind the design of a microwave sensor for the accurate measurement of firn complex permittivity is presented. This class of microwave sensors, based on the open-coaxial re-entrant cavity method, is specifically designed to ...
Roberto Olmi, Saverio Priori, Alberto Toccafondi, Federico Puggelli   +3 more
doaj   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Complex Permittivity Measurement System for Solid Materials Using Complementary Frequency Selective Surfaces

IEEE Access, 2020
This paper describes a novel method of characterizing complex permittivity using a complementary frequency selective surface (CFSS). The CFSS provides a passband behavior and the change in the passband when a material under test (MUT) is placed adjacent ...
Chih-Kuo Lee, Shiyu Zhang, Syed Sheheryar Bukhari, Darren Cadman, J. C. Vardaxoglou, William G. Whittow   +5 more
doaj   +1 more source