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Wave-transparent LAS enabling superior bandwidth electromagnetic wave absorption of a 2D pitaya carbon slice
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2022-08-15 , DOI: 10.1039/d2ta03853f Chunyan Ding 1, 2 , Hui Fu 1 , Tao Wu 1 , Yingjie Li 1 , Songsong Wu 1, 3 , Xiaozhen Ren 4 , Zengli Gao 1 , Kai Guo 1 , Long Xia 5 , Guangwu Wen 1, 2, 3 , Xiaoxiao Huang 6
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2022-08-15 , DOI: 10.1039/d2ta03853f Chunyan Ding 1, 2 , Hui Fu 1 , Tao Wu 1 , Yingjie Li 1 , Songsong Wu 1, 3 , Xiaozhen Ren 4 , Zengli Gao 1 , Kai Guo 1 , Long Xia 5 , Guangwu Wen 1, 2, 3 , Xiaoxiao Huang 6
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Wave-transparent lithium aluminosilicate glass-ceramic (LAS) nanofillers are confirmed to be effective in regulating the electromagnetic parameters to satisfy the impedance matching characteristic and enhance the electromagnetic wave loss ability. Herein, a new pitaya slice hierarchical configuration of a 2D LAS/carbon sheet electromagnetic wave absorber was prepared by an effective protocol using an ammonium nitrate-assisted self-polymerization and in situ blown strategy. The obtained 2D pitaya hierarchical configuration exhibited excellent microwave absorption performance with an RL of −55.26 dB and a wide effective absorption bandwidth (≤-10 dB) of 8.21 GHz, covering the whole Ku-band (12–18 GHz) with a low mass adding of only 9.2 wt%. The absorbing mechanism demonstrated that the interfacial polarization, Debye dipolar relaxation, and well-matched characteristic impedance play important roles in improving the microwave absorption properties of the 2D pitaya slice hierarchical configuration. This paper may provide a new route for constructing an effective absorbing network of 2D pitaya slice hierarchical configuration, realizing ultra-low filling and broadband microwave performance.
中文翻译：
透波 LAS 可实现二维火龙果碳切片的卓越带宽电磁波吸收
透波的铝硅酸锂玻璃陶瓷（LAS）纳米填料被证实可有效调节电磁参数以满足阻抗匹配特性并增强电磁波损耗能力。在此，通过使用硝酸铵辅助自聚合和原位的有效方案制备了一种新的 2D LAS/碳片电磁波吸收器的火龙果切片分层结构。吹战略。获得的二维火龙果层次结构表现出优异的微波吸收性能，RL 为-55.26 dB，有效吸收带宽（≤-10 dB）为 8.21 GHz，覆盖整个 Ku 波段（12-18 GHz），质量低仅添加 9.2 wt%。吸收机制表明，界面极化、德拜偶极弛豫和良好匹配的特性阻抗在改善二维火龙果切片分层结构的微波吸收性能方面发挥着重要作用。该文可为构建有效的二维火龙果切片分层配置吸波网络，实现超低填充和宽带微波性能提供新的途径。
更新日期：2022-08-15
中文翻译：
透波 LAS 可实现二维火龙果碳切片的卓越带宽电磁波吸收
透波的铝硅酸锂玻璃陶瓷（LAS）纳米填料被证实可有效调节电磁参数以满足阻抗匹配特性并增强电磁波损耗能力。在此，通过使用硝酸铵辅助自聚合和原位的有效方案制备了一种新的 2D LAS/碳片电磁波吸收器的火龙果切片分层结构。吹战略。获得的二维火龙果层次结构表现出优异的微波吸收性能，RL 为-55.26 dB，有效吸收带宽（≤-10 dB）为 8.21 GHz，覆盖整个 Ku 波段（12-18 GHz），质量低仅添加 9.2 wt%。吸收机制表明，界面极化、德拜偶极弛豫和良好匹配的特性阻抗在改善二维火龙果切片分层结构的微波吸收性能方面发挥着重要作用。该文可为构建有效的二维火龙果切片分层配置吸波网络，实现超低填充和宽带微波性能提供新的途径。
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