ORBi: Quiévy Nicolas - Electromagnetic absorption properties of carbon nanotube nanocomposite foam filling honeycomb waveguide structures

Reference : Electromagnetic absorption properties of carbon nanotube nanocomposite foam filling hone...


	Document type :	Scientific journals : Article
	Discipline(s) :	Engineering, computing & technology : Materials science & engineering Physical, chemical, mathematical & earth Sciences : Chemistry
	To cite this reference:	http://hdl.handle.net/2268/117469

Title :	Electromagnetic absorption properties of carbon nanotube nanocomposite foam filling honeycomb waveguide structures
Language :	English
Author, co-author :	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 [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) > > > >]
Publication date :	Feb-2012
Journal title :	IEEE Transactions on Electromagnetic Compatibility
Publisher :	IEEE
Volume :	24
Issue/season :	1
Pages :	43-51
Audience :	International
ISSN :	0018-9375
Keywords :	[en] electromagnetic interferences (EMI) shielding material ; nanostructured material ; nanocomposite ; carbon nanotube
Abstract :	[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.
Research units :	Center for Education and Research on Macromolecules (CERM)
Funders :	Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Target :	Researchers
Permalink :	http://hdl.handle.net/2268/117469

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	File	Commentary	Version	Size	Access
Restricted access	Thomassin JM 2012 IEEE Trans Elec Comp 54, 43.pdf		Publisher postprint	1.25 MB	Request copy

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