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Materials for Electromagnetic Interference Shielding
Journal of Materials Engineering and Performance, 2000Materials for the electromagnetic interference (EMI) shielding of electronics and radiation sources are reviewed, with emphasis on composite materials and resilient EMI gasket materials, which shield mainly by reflection of the radiation at a high frequency.
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Electromagnetic interference shielding effectiveness of monolayer graphene
Nanotechnology, 2012We report the first experimental results on the electromagnetic interference (EMI) shielding effectiveness (SE) of monolayer graphene. The monolayer CVD graphene has an average SE value of 2.27 dB, corresponding to ~40% shielding of incident waves. CVD graphene shows more than seven times (in terms of dB) greater SE than gold film.
Hong, SK Hong, Seul Ki +6 more
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Carbonized polybenzoxazine for electromagnetic interference shielding
Materials Chemistry and Physics, 2019Abstract A kind of highly thermally stable polybenzoxazine prepared from the monomer bearing both acetenyl and aldehyde groups was treated at different temperatures till 1000 °C. The evolution of the chemical structures of the products during the heat treatment process was studied by FTIR, EA, XRD, XPS and Raman spectroscopy.
Shuai Zhang, Qichao Ran, Qiang Fu, Yi Gu
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2D Monolayers for Superior Transparent Electromagnetic Interference Shielding
ACS Nano, 2022With countless modern technologies utilizing wireless communication, materials that can selectively allow transmission of visible light and prevent transmission of low frequency GHz electromagnetic interference (EMI) are needed. Recently, 2D materials such as graphene, transition metal dichalcogenides, and MXenes have shown promise for such ...
Dillon C. Yost +3 more
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Electromagnetic Interference Shielding and its Evaluation
2022This chapter introduces the basis of electromagnetic interference shielding theory, techniques for characterizing electromagnetic materials, and the application of studying the electromagnetic properties of materials. The main topics include theoretical shielding effectiveness calculation and its measurement, Shielding Mechanism of E-Field and H-Field,
Avanish Pratap Singh +3 more
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Mats and Fabrics for Electromagnetic Interference Shielding
Journal of Materials Engineering and Performance, 2006Fabrics (with continuous electrically conductive fibers) are more effective than mats (with discontinuous conductive fibers) for electromagnetic interference shielding. Conductive fibers in the form of metal-coated polymer fibers or metal-coated carbon fibers are more effective than those in the form of bare carbon fibers.
Taejin Kim, D.D.L. Chung
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FDTD applications to electromagnetic interference and shielding
IEEE WESCANEX 95. Communications, Power, and Computing. Conference Proceedings, 2002The finite difference time domain method (FDTD) is applied to two electromagnetic interference (EMI) problems. The technique is used to simulate fields to wire coupling. Two types of excitation are used in this simulation: a plane wave excitation and a dipole antenna.
M. Hussein, A. Sebak
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Bionic-structured electromagnetic interference shielding composites
Science BulletinAs electromagnetic pollution intensifies and the demand for high-precision electronic equipment increases, the development of high-performance, adaptable electromagnetic interference (EMI) shielding materials with high-performance and adaptability has become a research focus.
Minzi, Zhai +7 more
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Shielding of electromagnetic interference using polyaniline
Synthetic Metals, 1993Since the discovery in 1977 of the metallic properties of molecularly doped polyacetylene, there has been rapid growth in the field of electronically conducting polymers [1-5]. The interest in this area is mainly due to the numerous technological applications of conducting polymers as active electrode materials in energy storage [6], opto-electronic ...
Dinesh Chandra Trivedi +1 more
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Graphene in Electromagnetic Interference Shielding
Electromagnetic interference (EMI) has become a critical challenge in modern electronics, telecommunications, aerospace, and defense systems due to the proliferation of wireless technologies and high-frequency devices. Traditional metallic shielding materials suffer from limitations including excessive weight, rigidity, and corrosion susceptibility ...S. Khalid +5 more
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