Orthogonal Pattern of Spinnable Multiwall Carbon Nanotubes for Electromagnetic Interference Shielding Effectiveness



The need for thin and lightweight electromagnetic interference shielding materials is rapidly increasing in several industries, such as aerospace and telecommunication. This research finds that a shielding material, which is developed by the orthogonal pattern of spinnable multiwall carbon nanotubes (MWNTs), is ultra-light weight, thin, and has a high shielding effectiveness (SE). An orthogonal pattern, generated by just alignment of the spinnable MWNTs without adding any support materials such as polymers, ceramics, and magnets demonstrates that it is possible to efficiently attenuate electromagnetic interference (EMI) in the X-band frequency range (8.2–12.4 GHz). EMI SE in the developed shielding material is about 19.2 dB with a specific shielding effectiveness (SSE)/t (thickness) value of 73,633 dB cm² g⁻¹ at a thickness of about 4.48 μm. In addition, absorption effectiveness in this shielding material is as high as 96.3%, which provides excellent ability to reduce the secondary damage by reflection. ©2019 Elsevier Ltd


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Electromagnetic interference, Electromagnetic pulse, Electromagnetic interference, Carbon nanotubes, Magnetic materials, Magnetic shielding, Nanotubes, Shielding (Electricity)--Materials, Shielding (Electricity)


National Research Foundation of Korea and the National Research Foundation (Grant No. 2016R1C1B2012340) of the Ministry of Science; Air Force Office of Scientific Research grant FA9550-15-1-0089 I; Robert A. Welch Foundation grant AT-0029.


©2019 Elsevier Ltd. All Rights Reserved.