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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Kuzhir, P.P. Paddubskaya, A.G. Maksimenko, S.A. Celzard, A. Fierro, V. Amaral-Labat, G. Pizzi, A. Macutkevic, J. Valusis, G. Ivanov, M. Banys, J. Bellucci, S. |
| Copyright Year | 2012 |
| Description | Author affiliation: Frascati National Laboratory, National Institute of Nuclear Physics, (LNF INFN), Via E. Fermi 40, I-00044 Frascati (Roma), Italy (Bellucci, S.) || Center for Physical Sciences and Technology (CPST), A. Gostauto g. 11, LT-01108 Vilnius, Lithuania (Macutkevic, J.; Valusis, G.) || Vilnius University (VU), 3 Universiteto St, LT-01513 Vilnius, Lithuania (Ivanov, M.; Banys, J.) || Research Institute for Nuclear problems of Belarusian State University (INP BSU), Bobruiskaya Str., 11 Minsk 220030 Belarus (Kuzhir, P.P.; Paddubskaya, A.G.; Maksimenko, S.A.) || IJL - UMR CNRS 7198 and LERMAB - ENSTIB, 27, rue Philippe Séguin, BP 1041, F-88051 Épinal Cedex 9 (Celzard, A.; Fierro, V.; Amaral-Labat, G.; Pizzi, A.) |
| Abstract | Five different cellular glasslike carbons prepared from tannin-based foam pyrolysed at 900°C and presenting variable electric conductivities have been evaluated for electromagnetic (EM) interference shielding effectiveness (SE) in Ka-band. Sufficiently large dielectric loss tangent was also observed in radio frequency range from 1MHz to 2GHz. The effect of density on the EM response properties in microwaves has been studied and found to correlate well with the electrical conductivity. In particular, the contribution to EM attenuation of absorption / reflection mechanisms was found to be very dependent on the cellular microstructure and changed from the ratio 2/1 for dilute samples (bulk density 0.042 $g/cm^{3})$ to 3/8 for compact ones (0.150 $g/cm^{3}).$ The maximal 23 dB SE has been obtained in Ka-band for the samples with the highest densities, indicating that the carbon foam being extremely lightweight and characterized by relatively high electrical conductivity can be used as effective multifunctional EM coating. |
| Starting Page | 1 |
| Ending Page | 4 |
| File Size | 999484 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781467307185 |
| ISSN | 23250364 |
| e-ISBN | 9781467307178 |
| DOI | 10.1109/EMCEurope.2012.6396811 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2012-09-17 |
| Publisher Place | Italy |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | microwaves cellular structure pore size Electromagnetic interference carbon foam electromagnetic shielding Carbon dioxide Materials Conductivity Microwave theory and techniques Frequency measurement Carbon |
| Content Type | Text |
| Resource Type | Article |
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