Orthogonal pattern of spinnable multiwall carbon nanotubes for electromagnetic interference shielding effectiveness
2019-11-14 14:10:33 조회수186
Duck Weon Lee( a, c), Hyunsoo Kim (a), Ji Hwan Moon (a), Jae-Hun Jeong (a), Hyeon Jun Sim (a),Bum Joon Kim (a), Jae Sang Hyeon (a), Ray H. Baughman (b), Seon Jeong Kim (a, *) a) Center for Self-Powered Actuation, Department of Biomedical Engineering, Hanyang University, Seoul, 04763, Republic of Korea // b) The Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75083, USA c) Department of Chemistry and Material Science, Aalto University, PO Box 16100, FI-00076 AALTO, Finland 원문 링크 :


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. 

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