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Ku-band EMI shielding effectiveness and dielectric properties of Polyaniline-Y2O3 composites

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Abstract

Electromagnetic interference (EMI) shielding has become a phenomenon of great concern and there is growing demand towards the synthesis of materials with better EMI shielding effectiveness (EMI SE). This work highlights the preparation of Polyaniline-Yttrium Oxide (PANI-Y2O3) composites for EMI shielding applications in the frequency range from 12.4 to 18 GHz (Ku-band). The structure and morphology of the composites were investigated by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). EMI SE, microwave absorption and reflection, dielectric properties of the composites are discussed in detail. All the computations were based on microwave scattering parameters measured by transmission line waveguide technique. The observed results show absorption dominant EMI shielding in these composites with EMI SE of −19 to −20 dB, which mainly depends on the dielectric loss of the composites. Through the results of our observations, we propose these composites to be potential materials for microwave absorption and EMI shielding applications.

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Authors and Affiliations

  1. Department of Physics, PES Institute of Technology-Bangalore South Campus, Bengaluru, 560100, India

    Muhammad Faisal & Syed Khasim

  2. Department of Physics, University of Tabuk, Tabuk, 71491, Saudi Arabia

    Syed Khasim

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  1. Muhammad Faisal
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  2. Syed Khasim
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Correspondence to Syed Khasim.

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Faisal, M., Khasim, S. Ku-band EMI shielding effectiveness and dielectric properties of Polyaniline-Y2O3 composites. Polym. Sci. Ser. A 56, 366–372 (2014). https://doi.org/10.1134/S0965545X14030055

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  • DOI: https://doi.org/10.1134/S0965545X14030055

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