Reference : Electromagnetic absorption properties of carbon nanotube nanocomposite foam filling h...
Scientific journals : Article
Engineering, computing & technology : Materials science & engineering
Physical, chemical, mathematical & earth Sciences : Chemistry
http://hdl.handle.net/2268/117469
Electromagnetic absorption properties of carbon nanotube nanocomposite foam filling honeycomb waveguide structures
English
Quiévy, Nicolas [Université catholique de Louvain (UCL) > > > >]
Bollen, Pierre [Université catholique de Louvain (UCL) > > > >]
Thomassin, Jean-Michel [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Detrembleur, Christophe mailto [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Pardoen, Thomas [Université catholique de Louvain (UCL) > > > >]
Bailly, Christian [Université catholique de Louvain (UCL) > > > >]
Huynen, Isabelle [Université catholique de Louvain (UCL) > > > >]
Feb-2012
IEEE Transactions on Electromagnetic Compatibility
IEEE
24
1
43-51
Yes (verified by ORBi)
International
0018-9375
[en] electromagnetic interferences (EMI) shielding material ; nanostructured material ; nanocomposite ; carbon nanotube
[en] Carbon nanotube reinforced polymer foams filling a metallic honeycomb were processed and characterized for the production of hybrid materials with high electromagnetic absorption potential. Electromagnetic modeling and experimental characterization of the hybrids proved that the honeycomb, acting as a hexagonal waveguide, improves the absorption properties in the gigahertz range above the cutoff frequency. The electromagnetic absorption can be tuned by changing the hybrid material properties. The required levels of electrical conductivity are attained owing to the dispersion of low amounts (1–2 wt%) of carbon nanotubes inside the polymermatrix. The combination of the foam and honeycomb architecture contributes to decrease the real part of the relative effective permittivity Re{εr,eff }. Varying the cell shape of the honeycomb changes the frequency range for high absorption. An analytical model for the absorption has been developed, showing good agreement with the experimental results.
Center for Education and Research on Macromolecules (CERM)
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Researchers
http://hdl.handle.net/2268/117469

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