期刊
SYNTHETIC METALS
卷 209, 期 -, 页码 383-388出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2015.08.017
关键词
Carbon nanotube; Silver nanoparticle; Nanocomposite; Electromagnetic wave absorber; Reflection loss
The electromagnetic wave absorption properties of single- and double-layer silver nanoparticle/carbon nanotube (Ag/CNT) nanocomposites were evaluated. The reflection loss (R.L.) of the samples was calculated based on the measured complex permittivity and permeability. The double-layer composites constructed from CNT 30 wt.% and Ag/CNT 30 wt.% with total thickness of 3.3 mm showed a minimum R.L. of similar to-52.9 dB (over 99.999% absorption) at 63 GHz. The bandwidth of reflection loss less than 10 dB was observed at 3 regions, with wideness of 3.5, 0.8, and 1.5 GHz. Thin absorber with large RI. and wide response bandwidth at low and high frequency regions can be obtained with double-layer composites. The capability to modulate the absorption and bandwidth of these samples to suit various applications in different frequency bands indicates that these nanocomposites could be an excellent electromagnetic wave absorber. (C) 2015 Elsevier B.V. All rights reserved.
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