Results 271 to 280 of about 6,532,444 (320)
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Journal of Applied Physics, 1993
The dielectric behavior and structure of the Sr(Zn1/3Nb2/3)O3-Ba(Zn1/3Nb2/3)O3 solid solution have been investigated with the intention of understanding the relationship between the structural changes and the temperature coefficient of the relative permittivity τε.
Colla, E. L., Reaney, I. M., Setter, N.
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The dielectric behavior and structure of the Sr(Zn1/3Nb2/3)O3-Ba(Zn1/3Nb2/3)O3 solid solution have been investigated with the intention of understanding the relationship between the structural changes and the temperature coefficient of the relative permittivity τε.
Colla, E. L., Reaney, I. M., Setter, N.
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IEEE Transactions on Instrumentation and Measurement, 2023
Contact method is an important method to measure the complex permittivity of polymer films. There are some possible factors affecting its accurate measurement for thin films by direct contact method.
Jun Yu Li +6 more
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Contact method is an important method to measure the complex permittivity of polymer films. There are some possible factors affecting its accurate measurement for thin films by direct contact method.
Jun Yu Li +6 more
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ACS Applied Materials and Interfaces, 2021
Polyimides are widely utilized engineering polymers due to their excellent balance of mechanical, dielectric, and thermal properties. However, the manufacturing of polyimides into complex multifunctional designs can be hindered by dimensional shrinkage ...
H. C. Liu +4 more
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Polyimides are widely utilized engineering polymers due to their excellent balance of mechanical, dielectric, and thermal properties. However, the manufacturing of polyimides into complex multifunctional designs can be hindered by dimensional shrinkage ...
H. C. Liu +4 more
semanticscholar +1 more source
Complex Permittivity Measurement of Dielectric Substrate in Sub-THz Range
IEEE Transactions on Terahertz Science and Technology, 2021In this article, three frequency independent optical paths are designed and analyzed. A two-parabolic-mirror system and a four-parabolic-mirror system are studied and developed over 140–220 GHz to achieve precision complex permittivity measurements of a ...
Haotian Zhu, Ke Wu
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Effect of metal and halogen ions on the relative permittivity of some diamine complexes
Physica Scripta, 1997The real part of the relative permittivity e'r as well as the dielectric loss as represented by e''r for the compounds (CH2)n(NH3)2MCl4−xBrx (where x = 0, 2, n = 2, 3 and M = Cu, Co) have been measured. The measurements were carried out as a function of temperature and frequency. Both e'r and e''r show the same relaxation phenomena which involves large
M A Ahmed +3 more
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IEEE Transactions on Geoscience and Remote Sensing, 2022
This is the first of two articles that present experimental spectra of six soil samples with varying clay contents ranging from 0 to 55% and organic carbon levels ranging from 0 to 3.9%, measured at a small step of moisture change at a temperature of 25 ...
P. Bobrov +3 more
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This is the first of two articles that present experimental spectra of six soil samples with varying clay contents ranging from 0 to 55% and organic carbon levels ranging from 0 to 3.9%, measured at a small step of moisture change at a temperature of 25 ...
P. Bobrov +3 more
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Circularly Polarized UHF RFID Tag Antenna for Wireless Sensing of Complex Permittivity of Liquids
IEEE Sensors Journal, 2021This paper presents a compact circularly polarized UHF RFID tag antenna based on complementary split ring resonator (CSRR). Its operating frequency varies with the injected liquid inside the proposed antenna, which is fabricated by 3D printing technology.
Yi Chen, Changzhou Hua, Zhongxiang Shen
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Relative permittivity and electrical conductivity of some divalent metal alginate complexes
Materials Letters, 1997Abstract The influence of a frequency on the relative permittivity e ′ Γ as well as the AC conductivity of metal alginate complexes (Ba 2+ , Sr 2+ , Pb 2+ , Cd 2+ or Zn 2+ ions) as a function of temperature has been investigated.The average values of the activation energy obtained from the experimental data indicate that the electrical ...
S.M.Abdel Wahab +4 more
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Improvement of Flame Complex Permittivity Model Considering Positive Ions and Electrons
International Instrumentation and Measurement Technology Conference, 2022The complex permittivity of flame includes relative permittivity and conductivity, which is an important electrical characteristic parameter to reflect the information of combustion process. The complex permittivity of flame can be measured by electrical
Chao Wang +3 more
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Ferroelectrics, 1992
Abstract The dielectric behaviour and structure of the BaxSr1–x(Zn1/3Nb2/3)O3 (BSZN) solid solution have been investigated with the intention of understanding an anomaly which exists in the temperature coefficient of the dielectric constant (τϵ) at x ≈ 0.5. A correlation between τe and the occurrence of O-octahedra tilts has been established.
Colla, E. L., Reaney, I. M., Setter, N.
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Abstract The dielectric behaviour and structure of the BaxSr1–x(Zn1/3Nb2/3)O3 (BSZN) solid solution have been investigated with the intention of understanding an anomaly which exists in the temperature coefficient of the dielectric constant (τϵ) at x ≈ 0.5. A correlation between τe and the occurrence of O-octahedra tilts has been established.
Colla, E. L., Reaney, I. M., Setter, N.
openaire +2 more sources