Results 21 to 30 of about 4,484,179 (391)

Significant enhancement of dielectric properties in polyimides with sulfonyl groups in the side chains

IET Nanodielectrics, 2023
Polymer dielectrics with excellent thermal resistance and superior energy storage behaviour are extensively demanded with the increasing development of film capacitors applied in hostile environments. In this study, novel diamine with sulfonyl‐containing
Jinpeng Luo, Hui Tong, Shimo Cao, Junbiao Liu, Xiaomin Li   +4 more
doaj   +1 more source

iGSE-C_D—An Electric-/Displacement-Field Related Steinmetz Model for Class II Multilayer Ceramic Capacitors Under Low-Frequency Large-Signal Excitation

IEEE Open Journal of Power Electronics, 2023
Multilayer Ceramic Capacitors (MLCCs) are of paramount importance in electronics and ferroelectric Class II dielectrics enable outstanding energy-density values.
David Menzi, Morris Heller, George Kerridge, Peter Marley, Angela Ellmore, Shmuel Ben-Yaakov, Johann W. Kolar   +6 more
doaj   +1 more source

Dielectric constant and losses in a magnetic field in RexMn1-xS solid solutions (Re = Gd, Yb) [PDF]

E3S Web of Conferences
Polycrystalline samples GdxMn1-xS and YbxMn1-xS with a concentration x = 0.2, near the ions percolation concentration through the face-centered cubic lattice, are studied in order to determine fluctuations in the valence of the ytterbium ion on ...
Kharkov A. M., Cheremnykh N. A., Voronova E. G., Bandurina O. N., Pavlova A. N.   +4 more
doaj   +1 more source

Controlling internal barrier in low loss BaTiO3 supercapacitors [PDF]

, 2009
Supercapacitor behavior has been reported in a number of oxides including reduced BaTiO3 ferroelectric ceramics. These so-called giant properties are however not easily controlled. We show here that the continuous coating of individual BaTiO3 grains by a
C. Elissalde, C. Estournès, M. Maglione, Maglione M., S. Mornet, U-C. Chung, Yoon D. H.   +6 more
core   +4 more sources

Dielectric Losses Considerations for Piezoelectric Energy Harvesting

Journal of Low Power Electronics, 2018
During the last decades, vibrations-based piezoelectric energy scavenging has been widely investigated as a way to replace or complement batteries to power sensor nodes in closed and confined environments.
A. Morel, G. Pillonnet, Y. Wanderoild, A. Badel   +3 more
semanticscholar   +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

High-Q trenched aluminum coplanar resonators with an ultrasonic edge microcutting for superconducting quantum devices

Scientific Reports, 2023
Dielectric losses are one of the key factors limiting the coherence of superconducting qubits. The impact of materials and fabrication steps on dielectric losses can be evaluated using coplanar waveguide (CPW) microwave resonators.
E. V. Zikiy, A. I. Ivanov, N. S. Smirnov, D. O. Moskalev, V. I. Polozov, A. R. Matanin, E. I. Malevannaya, V. V. Echeistov, T. G. Konstantinova, I. A. Rodionov   +9 more
doaj   +1 more source

Dielectric Losses of Microwave Ceramics Based on Crystal Structure

Electromagnetic Materials and Devices, 2018
So far, many microwave dielectric materials have been investigated for a range of telecommunication applications. In dielectrics, the three main dielectric properties are quality factor ( Q ), dielectric constant and temperature coefficient of resonant ...
H. Ohsato, J. Varghese, H. Jantunen
semanticscholar   +1 more source

Barium Titanate/Gadolinium Ferrite: A New Material Composite to Store Energy

Nanomaterials, 2023
This work investigates the dielectric properties of barium titanate/gadolinium ferrite ceramic composites, with different concentrations of each material.
Clara Baivier, Imen Hammami, Ratiba Benzerga, Manuel P. F. Graça, Luís C. Costa   +4 more
doaj   +1 more source

Field quantization in inhomogeneous absorptive dielectrics [PDF]

, 2004
The quantization of the electromagnetic field in a three-dimensional inhomogeneous dielectric medium with losses is carried out in the framework of a damped-polariton model with an arbitrary spatial dependence of its parameters.
A. Bechler, A. Lukš, L. G. Suttorp, L. Knöll, Martijn Wubs   +4 more
core   +5 more sources