反射损耗
材料科学
微波食品加热
介电损耗
无定形固体
制作
阻抗匹配
衰减
无定形碳
电介质
纳米线
复合数
光电子学
吸收(声学)
碳纤维
复合材料
电阻抗
纳米技术
光学
计算机科学
电气工程
电信
化学
工程类
医学
替代医学
物理
有机化学
病理
作者
Lanchao Wen,Li Guan,Jiaxin Zhang,Yu Zhu,Jiawei Hao,Biao Zhao,Rui Zhang
出处
期刊:ACS applied nano materials
[American Chemical Society]
日期:2024-01-03
标识
DOI:10.1021/acsanm.3c05486
摘要
Carbon/carbon composite materials, as electromagnetic wave-absorbing (EWA) materials, have been widely studied due to their excellent impedance matching and high dielectric loss. In this work, we introduced amorphous carbon into the TaC nanowire (TaCnws) matrix, effectively optimizing impedance matching. The inclusion of amorphous carbon introduces a substantial quantity of imperfections and interfaces, thereby promoting polarization. The multipolarization loss and magnetic loss mechanism generate electromagnetic synergistic loss effects, significantly improving the attenuation performance of EW. The TaCnws/C sample exhibits exceptional EWA performance, achieving a minimum reflection loss (RLmin) of −54.25 dB and an effective absorption bandwidth (EAB) of 3.6 GHz at a low thickness of merely 1.4 mm. This study presents a novel methodology for the future fabrication of TMC composite materials, thereby holding substantial research implications.
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