PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Microwave absorption properties of Ag naowires/carbon black composites |
Hai-Long Huang(黄海龙), Hui Xia(夏辉), Zhi-Bo Guo(郭智博), Yu Chen(陈羽), Hong-Jian Li(李宏建) |
School of Physics and Electronics, Central South University, Changsha 410083, China |
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Abstract The composite that can absorb the high-performance electromagnetic (EM) wave is constructed into a sandwiched structure composed of carbon black (CB)/ethylene-vinyl acetate (EVA) and Ag naowires (AgNWs). The AgNWs sandwiched between two CB/EVA layers are used to improve the absorption properties of composite. The effects of EVA-to-CB weight ratio, concentration and diameter of AgNWs with a thickness of 0.4 mm on microwave absorption are investigated. The results indicate that for an EVA-to-CB weight ratio of 1:3, AgNW concentration of 1.0 mg/100 mL, and average diameter of 56 nm, the reflection loss (RL) of the composite is below -10 dB in a frequency range of 9.3 Ghz-18.0 GHz, with the minimum values of -40.0 dB and -25.6 dB at 13.5 GHz and 15.3 GHz, respectively. A finite element method (FEM) is used for calculating the RL of the composite. The calculated results are in agreement with the experimental data.
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Received: 25 July 2016
Revised: 21 October 2016
Accepted manuscript online:
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PACS:
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52.70.Gw
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(Radio-frequency and microwave measurements)
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Fund: Project partly supported by the National Natural Science Foundation of China (Grant No. 61275174). |
Corresponding Authors:
Hui Xia
E-mail: xhui73@csu.edu.cn
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Cite this article:
Hai-Long Huang(黄海龙), Hui Xia(夏辉), Zhi-Bo Guo(郭智博), Yu Chen(陈羽), Hong-Jian Li(李宏建) Microwave absorption properties of Ag naowires/carbon black composites 2017 Chin. Phys. B 26 025207
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