Results 21 to 30 of about 3,315 (302)

Influence of thermal ageing on high‐field polarisation characteristics and conductivity behaviour of submarine polymeric cables insulation

open access: yesHigh Voltage, 2023
Diagnosing insulation intrinsic ageing is essential for preventing insulation failure of submarine cables, and in case of failure, helping in any decision about maintenance actions.
Xize Dai   +5 more
doaj   +1 more source

High-efficiency wide-band metal-dielectric resonant grating for 20 fs pulse compression [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2007
More than 95% average efficiency TE-polarisation diffraction over a 200 nm wavelength range centred at 800 nm is obtained by a metal-dielectric grating structure with non-corrugated mirror.
Flury M.   +4 more
doaj   +1 more source

Single/Dual/Triple Broadband Metasurface Based Polarisation Converter with High Angular Stability for Terahertz Applications

open access: yesMicromachines, 2022
This paper presents design and characterisation of a new compact metasurface based linear polarisation converter for terahertz applications. The metasurface unit cell with periodicity of 0.292λ0 consists of an asymmetrically oriented planar double ...
Shyam Sundar Pati, Swaroop Sahoo
doaj   +1 more source

THE EFFECT OF FREQUENCY VARIATION ON DIELECTRIC CONSTANT OF RAPHIA HOOKERI

open access: yesJournal of Renewable Energy and Mechanics, 2020
This work sought to investigate the effect of varying the frequency of an applied electric field on the dielectric constant of raphia hookeri. The aim of the work was to ascertain the suitability of using the sample for engineering applications.
Ubong Iboh   +3 more
doaj   +1 more source

Dielectric, piezoelectric, and ferroelectric nanomaterials in the biomedical applications

open access: yesIET Nanodielectrics, 2023
We have witnessed the flourish of bioelectronics, brain–computer interface, and brain science programme in recent decades. In this review, the up‐to‐date advances of dielectric, piezoelectric, and ferroelectric nanomaterials in the biomedical ...
Fang Wang   +3 more
doaj   +1 more source

90° dielectric polariser in circular waveguide

open access: yesElectronics Letters, 2000
Experimental results for a 90° dielectric polariser in a circular waveguide are presented. A small slot notched into the circular waveguide wall, used for the accurate alignment of the dielectric plate, has led to a decrease in the relative phase shift by 15.7%. A new U-shape impedance matching structure results in a bandwidth of 12.4%.
Wenquan Che, Edward Kai-Ning Yung
openaire   +1 more source

Polarisation and Energy Loss in Dielectrics [PDF]

open access: yesProceedings of the Physical Society of London, 1913
The Paper discusses the relations which should exist between the coefficients in Pellat's equation (as modified by Schweidler) giving the displacement in a viscous dielectric as a function of the time of charge and the P.D. It is proved that where the polarisation current of a dielectric under the action of a steady E.M.F.
openaire   +1 more source

High-energy storage and temperature stable dielectrics properties of lead-free BiScO(3)–BaTiO(3)–x(Bi(0.5)Na(0.5))TiO(3) ceramics

open access: yesIET Nanodielectrics, 2018
Lead-free (1–x)(0.4BiScO(3)–0.6BaTiO(3))-x(Bi(0.5)Na(0.5))TiO(3) (BSBT–xBNT) ceramics were prepared by traditional ceramics preparation method. The energy storage characteristics, as well as dielectric spectrum curves of BSBT–xBNT ceramics, were ...
Hang Xie   +9 more
doaj   +1 more source

The Inhibition Mechanism of Surfactant Composite for Mild Steel Corrosion in NaCl Solution

open access: yesASM Science Journal, 2021
The corrosion inhibition of sodium deodecylbenzenesulfonate (SDBS) surfactant and ZnSO4 on mild steel in 0.05 M NaCl solution was conducted through the impedance spectroscopy and linear polarisation measurement.
MK Harun, I Ismail, MZA Yahya
doaj   +1 more source

Improved energy storage property in polyvinylidene fluoride‐based multilayered composite regulated by oriented carbon nanotube@SiO2 nanowires

open access: yesIET Nanodielectrics, 2023
High‐performance dielectric capacitors are essential components of advanced electronic and pulsed power systems for energy storage. Because of their high breakdown strength and excellent flexibility, polymer‐based capacitors are regarded as auspicious ...
Na Zhang   +5 more
doaj   +1 more source

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