Ag/CNT nanocomposites and their single- and double-layer electromagnetic wave absorption properties
Ag/CNT nanocomposites and their single- and double-layer electromagnetic wave absorption properties
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DOI：
10.1016/j.synthmet.2015.08.017
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发表时间：
2015-11-01
期刊：
影响因子：
4.4
通讯作者：
Endo, Morinobu
中科院分区：
文献类型：
--
作者：
Melvin, Gan Jet Hong;Ni, Qing-Qing;Endo, Morinobu
研究了单层和双层银纳米颗粒/碳纳米管（Ag/CNT）纳米复合材料的电磁波吸收性能。反射损耗（R.L.）基于测量的复介电常数和磁导率计算样品的介电常数。由CNT 30重量%构成的双层复合材料和Ag/CNT 30重量%总厚度为3.3 mm时，R.L.最小。在63 GHz时，类似于-52.9 dB（超过99.999%吸收）。在3个区域观察到小于10 dB的反射损耗带宽，其宽度为3.5、0.8和1.5 GHz。具有大折射率的薄吸收体。双层复合材料在低频和高频区都有较宽的响应带宽。调制这些样品的吸收和带宽，以适应在不同频带的各种应用的能力表明，这些纳米复合材料可以是一个优秀的电磁波吸收剂。(C)2015 Elsevier B. V.版权所有。
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.