Growth of coiled amorphous carbon nanotube array forest and its electromagnetic wave absorbing properties. (1st February 2018)

• Record Type: Journal Article
• Authors: Hu, Jingtian; Zhao, Tingkai; Peng, Xiarong; Yang, Wenbo; Ji, Xianglin; Li, Tiehu
• Is Part Of: Composites. Number 134(2018)
• Page Start: 91
• Page End: 97
• Publication Date: 2018-02-01
• Subjects: Coiled amorphous carbon nanotubes (CACNT) -- Array -- Electromagnetic wave absorbing properties; Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2017.09.071
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: Coiled amorphous carbon nanotube (CACNT) array was prepared by chemical vapor deposition method. The experimental results indicated that the length of as-prepared CACNT array was about 30 μm. The electromagnetic wave absorbing properties were studied through comparison among CACNTs, CACNT-La(NO3 )3, CACNT-(Fe, Co, Ni) and CACNT-reduced graphene oxide (RGO). The experimental results showed the maximum frequency bandwidth of CACNT-(Fe, Co, Ni) was 6.4 GHz below −5 dB and 2.3 GHz below −10 dB separately. Compared to the pure CACNTs, all the frequency bandwidth had been broaden after adding the modified agent. Meanwhile, the additive of rare earth ions La 3+ could effectively increase the maximum absorption peak (−17.94 dB at 8.96 GHz).