Results 41 to 50 of about 191,690 (317)

Finite element analysis of displacement actuator based on giant magnetostrictive thin film

open access: yesAIP Advances, 2018
With the rapid development of science and technology, mechanical and electrical equipment become more and more miniature. In order to achieve precise control in less than 1cm3, the giant magnetostrictive thin film has become a research hotspot. The micro
Shaopeng Yu   +3 more
doaj   +1 more source

Reliability growth prediction of mine-used low-voltage switchgear

open access: yesGong-kuang zidonghua, 2015
A mine low-voltage switchgear was taken as object to study its reliability growth process in the commissioning phase in underground coal mine. It was clarified that number of mine-used low-voltage switchgear failure occurrence accompanied with repair ...
XIA Haoxuan   +4 more
doaj   +1 more source

Broadband Dual-Polarized Magnetoelectric Dipole Antenna With Compact Structure for 5G Base Station

open access: yesIEEE Access, 2023
This paper presents a compact wideband dual-polarized magnetoelectric dipole antenna suitable for 5G base stations, which can cover 5G NR n77/78/79 band.
Shihao Wu, Feng Shang
doaj   +1 more source

3D zeros in electromagnetic fields

open access: yesOptica, 2023
We present a study of 3D electromagnetic field zeros, uncovering their remarkable characteristic features and propose a classifying framework. These are a special case of general dark spots in optical fields, which sculpt light’s spatial structure into matter-moving, information-rich vortices, escape the diffraction limit for ...
Alex J. Vernon   +2 more
openaire   +4 more sources

Platform Tolerant, High Encoding Capacity Dipole Array-Plate Chipless RFID Tags

open access: yesIEEE Access, 2019
In this paper, we first carry out an in-depth review of the performance parameters of frequencydomain chipless RFID transponders in terms of their spatial density, spectral capacity, and comprehensive encoding capacity (bit/λ2/GHz) comprising both
Milan Svanda   +4 more
doaj   +1 more source

Measurement and control systems for an imaging electromagnetic flow meter

open access: yes, 2014
Electromagnetic flow metres based on the principles of Faraday's laws of induction have been used successfully in many industries. The conventional electromagnetic flow metre can measure the mean liquid velocity in axisymmetric single phase flows ...
Zhang, T.   +5 more
core   +1 more source

Personal exposure to radio frequency electromagnetic fields and implications for health [PDF]

open access: yes, 2010
Exposure to radio frequency electromagnetic fields (RF-EMFs), as produced by mobile phone base stations, broadcast transmitters and cordless phones, has considerably increased over the past 20 years, especially due to the rapid expansion of the mobile ...
Frei, Patrizia
core   +1 more source

Analysis of crosstalk and field coupling to lossy MTL's in a SPICE environment [PDF]

open access: yes, 1996
This paper proposes a circuit model for lossy multiconductor transmission lines (MTLs) suitable for implementation in modern SPICE simulators, as well as in any simulator supporting differential operators.
Dilecce, B.   +3 more
core   +1 more source

Design and Performance Analysis of Permanent Magnet Claw Pole Machine with Hybrid Cores

open access: yesCES Transactions on Electrical Machines and Systems, 2023
Permanent magnet claw pole machine (PMCPM) is a special kind of transverse flux permanent magnet machine. Compared with other electrical machines, it has the advantages of high torque density and high efficiency for high speed operation. However, because
Chengcheng Liu   +3 more
doaj   +1 more source

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

open access: yesAdvanced 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   +5 more
wiley   +1 more source

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