Absorption modulation of FSS-polymer nanocomposites through incorporation of conductive nanofillers

The hybrid concept of utilizing frequency selective surface (FSS) and polymer nanocomposite (PNC) for absorption modulation is presented in 8–18 GHz frequency band. The extruded PNCs are fabricated by incorporating different weight% fraction of conductive fillers, namely carbon nanotubes (CNTs) and...

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Bibliographic Details
Published in:Applied physics. A, Materials science & processing Materials science & processing, 2017-03, Vol.123 (3), p.1-8, Article 164
Main Authors: Jaiswar, Rajkumar, Danlée, Yann, Mesfin, Henok, Delcorte, Arnaud, Hermans, Sophie, Bailly, Christian, Raskin, Jean-Pierre, Huynen, Isabelle
Format: Article
Language:English
Subjects:
Absorption spectra
Applied physics
Automobile industry
Carbon nanotubes
Characterization and Evaluation of Materials
Condensed Matter Physics
Conductivity
Extrusion
Fillers
Frequencies
Frequency selective surfaces
Graphene
Machines
Manufacturing
Materials science
Modulation
Nanocomposites
Nanotechnology
Optical and Electronic Materials
Physics
Physics and Astronomy
Polymer matrix composites
Polymers
Processes
Spectrum allocation
Substrates
Surfaces and Interfaces
Thin Films
Weight
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Summary:The hybrid concept of utilizing frequency selective surface (FSS) and polymer nanocomposite (PNC) for absorption modulation is presented in 8–18 GHz frequency band. The extruded PNCs are fabricated by incorporating different weight% fraction of conductive fillers, namely carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs), in high, low and mixed nano-filler concentration in a polycarbonate matrix. The FSS metallic resonator is patterned over a dielectric substrate which lies on grounded PNCs. It was found that absorption depends on wt% fraction of conductive inclusions in polycarbonate matrix, i.e., variation in conductivity of grounded PNCs due to varying concentration of conductive fillers results in modulation of absorption. Peaks of nearly 100% magnitude of absorption and modulated absorption band are observed at 8.2 GHz, and between 12 and 18 GHz frequency bands, respectively, by varying conductivity of polymer composite. We demonstrate here that the bandwidth and magnitude of absorption can be fixed by the combination of SSRs (for limits of the band) and concentrations in nanofillers (for intensity of absorption).
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-017-0805-9