Dielectric, magnetic and electromagnetic shielding properties of Poly-(3,4ethylenedioxythiophene)-maghnite associated with different fillers with any non-canonical shape

•Poly-(3,4ethylenedioxythiophene)-maghnite associated with different fillers.•New permittivity and permeability inverse measurement technique.•Handling position uncertainties and arbitrary sample shapes.•Electromagnetic shielding properties are obtained from permittivity and permeability.•Low values...

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Published in:Measurement : journal of the International Measurement Confederation 2022-05, Vol.194, p.111049, Article 111049
Main Authors: Benhamou, Sidi Mohamed, Lozano-Guerrero, Antonio José, Madaoui, Yemouna, Monzó-Cabrera, Juan, Hamouni, Mohammed, Díaz-Morcillo, Alejandro, Khaldi, Smain
Format: Article
Language:English
Subjects:
3,4ethylenedioxythiophene-maghnite
Absorption
Additives
Copper
Dielectrics
Electrically conductive additives
Electromagnetic properties
Electromagnetic shielding
Electromagnetic shielding effectiveness
Estimating techniques
Frequency ranges
Hydrogen
Inverse technique
Iron
Magnetic properties
Magnetic shielding
Permittivity
S parameters
Simulation
Wave reflection
Waveguides
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Summary:•Poly-(3,4ethylenedioxythiophene)-maghnite associated with different fillers.•New permittivity and permeability inverse measurement technique.•Handling position uncertainties and arbitrary sample shapes.•Electromagnetic shielding properties are obtained from permittivity and permeability.•Low values of fitness function with error minimization and enhanced accuracy. A new inverse measuring technique that corrects non-desired sample displacements and can handle any kind of sample shapes is presented. It is applied to the estimation of permittivity and permeability of Poly-(3,4ethylenedioxythiophene)-maghnite (PEDOT-Mag) associated with different additives such as iron, copper, and hydrogen. This electromagnetic characterization has been performed over the 9 to 11 GHz frequency range by comparing the simulated and measured scattering parameters of a partially filled WR-90 waveguide. Additionally, the reflection, absorption multiple reflection losses and the shielding effectiveness of these materials have been calculated. Results show higher values of dielectric constant and loss factor for PEDOT-Mag-copper, than those compounds associated with hydrogen or iron. As expected, the highest permeability values are achieved by PEDOT-Mag-iron. The composite PEDOT-Mag-copper exhibits higher attenuation constant, absorption loss, multiple reflection loss and shielding efficiency values than composites associated with iron or hydrogen. PEDOT-Mag-hydrogen, however, shows the highest reflection loss values.
ISSN:0263-2241
1873-412X
DOI:10.1016/j.measurement.2022.111049