Article (Scientific journals)
Multifunctional hybrids for electromagnetic absorption
Huynen, Isabelle; Quievy, N.; Bailly, Christian et al.
2011In Acta Materialia, 59 (8), p. 3255-3266
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Keywords :
electromagnetic interferences (EMI) shielding material
Abstract :
[en] Electromagnetic (EM) interferences are ubiquitous in modern technologies and impact on the reliability of electronic devices and on living cells. Shielding by EM absorption, which is preferable over reflection in certain instances, requires combining a low dielectric constant with high electrical conductivity, which are antagonist properties in the world of materials. A novel class of hybrid materials for EM absorption in the gigahertz range has been developed based on a hierarchical architecture involving a metallic honeycomb filled with a carbon nanotube-reinforced polymer foam. The waveguide characteristics of the honeycomb combined with the performance of the foam lead to unexpectedly large EM power absorption over a wide frequency range, superior to any known material. The peak absorption frequency can be tuned by varying the shape of the honeycomb unit cell. A closed form model of the EM reflection and absorption provides a tool for the optimization of the hybrid. This designed material sets the stage for a new class of sandwich panels combining high EM absorption with mass efficiency, stiffness and thermal management.
Research center :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Chemistry
Materials science & engineering
Author, co-author :
Huynen, Isabelle;  Université catholique de Louvain (UCL) > Research Center in Micro and Nanoscopic Materials and Electronic Devices and Microwave Laboratory
Quievy, N.;  Université catholique de Louvain (UCL) > Institute of Condensed Matter and Nanosciences (IMCN)
Bailly, Christian;  Université catholique de Louvain (UCL) > Research Center in Micro and Nanoscopic Materials and Electronic Devices and Institute of Condensed Matter and Nanosciences (IMCN) and Materials and Civil Engineering (iMMC)
Bollen, P.;  Université catholique de Louvain (UCL) > Microwave Laboratory and Institute of Condensed Matter and Nanosciences (IMCN) and Materials and Civil Engineering (iMMC)
Detrembleur, Christophe ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Eggermont, S.;  Université catholique de Louvain (UCL)
Molenberg, Isabel;  Université catholique de Louvain (UCL) > Microwave Laboratory
Thomassin, Jean-Michel ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Urbanczyk, Laetitia;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Pardoen, Thomas;  Université catholique de Louvain (UCL) > Research Center in Micro and Nanoscopic Materials and Electronic Devices and Institute of Mechanics, Materials and Civil Engineering (iMMC) and Materials and Civil Engineering (iMMC)
Language :
English
Title :
Multifunctional hybrids for electromagnetic absorption
Publication date :
May 2011
Journal title :
Acta Materialia
ISSN :
1359-6454
Publisher :
Elsevier Science
Volume :
59
Issue :
8
Pages :
3255-3266
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 29 August 2011

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