Results 341 to 350 of about 284,309 (382)

High Insulation Resistivity and Ultralow Dielectric Loss in La-Doped SrTiO3 Colossal Permittivity Ceramics through Defect Chemistry Optimization

ACS Sustainable Chemistry and Engineering, 2019
High performance LaxSr1–xTiO3 (0.000 ≤ x ≤ 0.018) ceramics were prepared by a traditional solid-state method and sintered in nitrogen atmosphere. The phase structure and micromorphology of the ceramic samples were studied by the analysis of XRD and SEM ...
Xu Guo, Y. Pu, Wen Wang, Lei Zhang, Jiamin Ji, Ruike Shi, Yu Shi, Mengdie Yang, Jingwei Li   +8 more
semanticscholar   +1 more source

Doping-dependent negative dielectric permittivity realized in mono-phase antimony tin oxide ceramics

, 2020
Materials with negative permittivity have recently become a research hotspot due to their potential applications in electromagnetic shielding, novel capacitance, inductor design, etc.
Guohua Fan, Zhongyang Wang, Kai Sun, Yao Liu, R. Fan   +4 more
semanticscholar   +1 more source

ENHANCING THE DIELECTRIC PERMITTIVITY OF ELASTOMERS

2008
The electromechanical transduction properties of any dielectric elastomer are intrinsically regulated by the dielectric permittivity of the material. This parameter proportionally controls both the achievable active stresses and strains. Accordingly, a suitable increase of the material permittivity may provide a valuable means to improve the ...
GALLONE, GIUSEPPE CARMINE, CARPI, FEDERICO, GALANTINI, FABIA, DE ROSSI, DANILO EMILIO   +3 more
openaire   +3 more sources

Measurement of the permittivity of dielectrics

Measurement Techniques, 1968
1. Our experimental investigations have shown that the accuracy in measuring the polarization parameters and determining the e value depends mainly on the error in calibrating the polarizing and the analyzing devices, which, in our case, did not exceed 5–7%. 2.
G. N. Anikeenko, S. I. Pozdnyak
openaire   +2 more sources

The permittivity of polar dielectrics

Russian Journal of Physical Chemistry A, 2007
The best known works on the theory of permittivity of polar dielectrics are considered. Equations are obtained that relate the dipole moment of a molecule in a medium to substance permittivity and can be used in calculations of the polarization characteristics of rarefied gases and condensed polar dielectrics.
N. M. Putintsev, D. N. Putintsev
openaire   +2 more sources

Tunable negative permittivity and magnetic performance of yttrium iron garnet/polypyrrole metacomposites at the RF frequency

Journal of Materials Chemistry C, 2019
Tunable negative permittivity and relaxation-type dispersion for permeability were evidenced in yttrium iron garnet/polypyrrole metacomposites.
Chuanbing Cheng, R. Fan, Guohua Fan, Hu Liu, Jiaoxia Zhang, Jianxing Shen, Qian Ma, R. Wei, Zhanhu Guo   +8 more
semanticscholar   +1 more source

Flexible cementite/ferroferric oxide/silicon dioxide/carbon nanofibers composite membrane with low-frequency dispersion weakly negative permittivity

Advanced Composites and Hybrid Materials, 2023
Mingxiang Liu, Han Wu, Yingjie Wang, Juanna Ren, Dalal A. Alshammari, Hassan E. Abd Elsalam, I. E. Azab, Hassan Algadi, Peitao Xie, Yao Liu   +9 more
semanticscholar   +1 more source

Progress in percolative composites with negative permittivity for applications in electromagnetic interference shielding and capacitors

Advanced Composites and Hybrid Materials, 2023
Zhong Leng, Zhenyu Yang, Xinxue Tang, Mohamed H. Helal, Yunpeng Qu, Peitao Xie, Z. M. El-Bahy, Shu-chao Meng, Mohamed M. Ibrahim, Changyou Yu, Hassan Algadi, Chunzhao Liu, Yao Liu   +12 more
semanticscholar   +1 more source

Solid Mixture Permittivities

The Journal of Chemical Physics, 1955
A macroscopically homogeneous aggregate contains two materials A, B, with dielectric constants εA, εB, in volume ratio p: (1—p); what is the dielectric constant of the aggregate? By a method used by Yvon and others in molecular theory, this very old problem is formulated rigorously and solved in series form. One form of the solution is ε/ε′ = 1+⅓p(1—p)(
openaire   +2 more sources

Biomass measurement by inductive permittivity

Biotechnology and Bioengineering, 1997
An electrodeless, inductive permittivity probe is shown to reliably indicate fermentation biomass. By designing the probe based on electromagnetic induction, the electrode polarization artifact-common to electrode-based permittivity measurements of conductive solutions-is eliminated. The measurement of viable biomass concentration (X(V)) is precise and
openaire   +3 more sources