Electromagnetic wave absorbing properties of amorphous carbon nanotubes

Tingkai Zhao; Cuilin Hou; Hongyan Zhang; Ruoxing Zhu; Shengfei She; Jungao Wang; Tiehu Li; Zhifu Liu; Bingqing Wei

doi:10.1038/srep05619

Electromagnetic wave absorbing properties of amorphous carbon nanotubes

Tingkai Zhao, Cuilin Hou, Hongyan Zhang, Ruoxing Zhu, Shengfei She, Jungao Wang, Tiehu Li, Zhifu Liu, Bingqing Wei

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

195 Scopus citations

Abstract

Amorphous carbon nanotubes (ACNTs) with diameters in the range of 7-50 nm were used as absorber materials for electromagnetic waves. The electromagnetic wave absorbing composite films were prepared by a dip-coating method using a uniform mixture of rare earth lanthanum nitrate doped ACNTs and polyvinyl chloride (PVC). The microstructures of ACNTs and ACNT/PVC composites were characterized using transmission electron microscope and X-ray diffraction, and their electromagnetic wave absorbing properties were measured using a vector-network analyzer. The experimental results indicated that the electromagnetic wave absorbing properties of ACNTs are superior to multi-walled CNTs, and greatly improved by doping 6wt% lanthanum nitrate. The reflection loss (R) value of a lanthanum nitrate doped ACNT/PVC composite was-25.02dB at 14.44 GHz, and the frequency bandwidth corresponding to the reflector loss at-10 dB was up to 5.8GHz within the frequency range of 2-18 GHz.

Original language	English
Article number	5619
Journal	Scientific Reports
Volume	4
DOIs	https://doi.org/10.1038/srep05619
State	Published - 10 Jul 2014

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title = "Electromagnetic wave absorbing properties of amorphous carbon nanotubes",

abstract = "Amorphous carbon nanotubes (ACNTs) with diameters in the range of 7-50 nm were used as absorber materials for electromagnetic waves. The electromagnetic wave absorbing composite films were prepared by a dip-coating method using a uniform mixture of rare earth lanthanum nitrate doped ACNTs and polyvinyl chloride (PVC). The microstructures of ACNTs and ACNT/PVC composites were characterized using transmission electron microscope and X-ray diffraction, and their electromagnetic wave absorbing properties were measured using a vector-network analyzer. The experimental results indicated that the electromagnetic wave absorbing properties of ACNTs are superior to multi-walled CNTs, and greatly improved by doping 6wt% lanthanum nitrate. The reflection loss (R) value of a lanthanum nitrate doped ACNT/PVC composite was-25.02dB at 14.44 GHz, and the frequency bandwidth corresponding to the reflector loss at-10 dB was up to 5.8GHz within the frequency range of 2-18 GHz.",

author = "Tingkai Zhao and Cuilin Hou and Hongyan Zhang and Ruoxing Zhu and Shengfei She and Jungao Wang and Tiehu Li and Zhifu Liu and Bingqing Wei",

year = "2014",

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T1 - Electromagnetic wave absorbing properties of amorphous carbon nanotubes

AU - Zhao, Tingkai

AU - Hou, Cuilin

AU - Zhang, Hongyan

AU - Zhu, Ruoxing

AU - She, Shengfei

AU - Wang, Jungao

AU - Li, Tiehu

AU - Liu, Zhifu

AU - Wei, Bingqing

PY - 2014/7/10

Y1 - 2014/7/10

N2 - Amorphous carbon nanotubes (ACNTs) with diameters in the range of 7-50 nm were used as absorber materials for electromagnetic waves. The electromagnetic wave absorbing composite films were prepared by a dip-coating method using a uniform mixture of rare earth lanthanum nitrate doped ACNTs and polyvinyl chloride (PVC). The microstructures of ACNTs and ACNT/PVC composites were characterized using transmission electron microscope and X-ray diffraction, and their electromagnetic wave absorbing properties were measured using a vector-network analyzer. The experimental results indicated that the electromagnetic wave absorbing properties of ACNTs are superior to multi-walled CNTs, and greatly improved by doping 6wt% lanthanum nitrate. The reflection loss (R) value of a lanthanum nitrate doped ACNT/PVC composite was-25.02dB at 14.44 GHz, and the frequency bandwidth corresponding to the reflector loss at-10 dB was up to 5.8GHz within the frequency range of 2-18 GHz.

AB - Amorphous carbon nanotubes (ACNTs) with diameters in the range of 7-50 nm were used as absorber materials for electromagnetic waves. The electromagnetic wave absorbing composite films were prepared by a dip-coating method using a uniform mixture of rare earth lanthanum nitrate doped ACNTs and polyvinyl chloride (PVC). The microstructures of ACNTs and ACNT/PVC composites were characterized using transmission electron microscope and X-ray diffraction, and their electromagnetic wave absorbing properties were measured using a vector-network analyzer. The experimental results indicated that the electromagnetic wave absorbing properties of ACNTs are superior to multi-walled CNTs, and greatly improved by doping 6wt% lanthanum nitrate. The reflection loss (R) value of a lanthanum nitrate doped ACNT/PVC composite was-25.02dB at 14.44 GHz, and the frequency bandwidth corresponding to the reflector loss at-10 dB was up to 5.8GHz within the frequency range of 2-18 GHz.

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SN - 2045-2322

VL - 4

JO - Scientific Reports

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M1 - 5619

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Electromagnetic wave absorbing properties of amorphous carbon nanotubes

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