ArticleScientific reports2025
Electrospun Ni-doped ZnO nanofiber coatings on carbon fabric for enhanced electromagnetic interference shielding.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Electromagnetic interference (EMI) is a critical concern in aerospace and defense applications, where lightweight structural composites must provide effective shielding against high-frequency electromagnetic (EM) radiation. In this work, Ni-doped ZnO (Ni-ZnO) nanofibers were directly deposited onto bidirectional carbon fabric substrates using an electrospinning process, followed by calcination at a high temperature. The nanofiber-coated fabrics were characterized for morphological, structural, and interfacial properties using scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR). The shielding effectiveness (SE) of the samples was evaluated in the X-band frequency range (8-12 GHz) using a vector network analyzer. The Ni-ZnO nanofiber coating enhanced the absorption-dominated shielding mechanism, resulting in improved attenuation performance compared to unmodified carbon fabric/epoxy laminates. The three-layer Ni-ZnO nanofiber-coated laminate achieved a maximum SE of ~ 85 dB at 10 GHz, corresponding to > 99.99% attenuation of incident EM radiation. This improvement is attributed to synergistic dielectric and magnetic losses, increased interfacial polarization, and enhanced conductive pathways. These findings demonstrate that Ni-ZnO nanofiber-modified carbon fabrics are promising for multifunctional aerospace composite structures requiring both mechanical performance and superior EMI shielding.
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