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New materials for electromagnetic shielding: Metal foams with plasma properties
Author(s) -
Monti Giuseppina,
Catarinucci Luca,
Tarricone Luciano
Publication year - 2010
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.25309
Subject(s) - electromagnetic shielding , microwave , plasma , materials science , homogeneous , metal , dispersion (optics) , electromagnetic radiation , mechanical engineering , composite material , computer science , engineering , physics , optics , telecommunications , metallurgy , thermodynamics , nuclear physics
In this article, the use of metal foams for shielding problems is investigated on the bases of an “effective medium approach.” Specifically, a shielding effectiveness analysis has been performed by modeling metal foams as a homogeneous medium described by a plasma dispersion profile.The suggested approach is experimentally validated demonstrating that metal foams behave like a plasma medium, with a plasma frequency in the microwave range. The proposed effective medium approach has also been implemented both with a proprietary and with a commercial full‐wave simulator. Results demonstrate that, by using the plasma model, general electromagnetic analysis of metal foams can be performed with common simulators and with affordable computational efforts. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1700–1705, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25309