纳米线
材料科学
微波食品加热
吸收(声学)
陶瓷
光电子学
化学气相沉积
调制(音乐)
纳米技术
电介质
复合材料
化学工程
声学
计算机科学
电信
物理
工程类
作者
Zhen Wang,Jingxiang Liu,Haoquan Hao,Qinghe Jing,Shouqing Yan,Jie Guo,Zhijiang Wang
出处
期刊:Carbon
[Elsevier]
日期:2024-01-01
卷期号:217: 118622-118622
被引量:13
标识
DOI:10.1016/j.carbon.2023.118622
摘要
SiC nanowire aerogels (SNWA) emerge as a promising category of electromagnetic wave absorbers (EMA) that can be applicable to extreme environments since they possess exceptional dielectric loss properties and superior ceramic characteristics. However, obtaining high-performance microwave absorption (MA) with a single SiC nanowire component poses a formidable challenge, such that the intrinsic MA potential in SNWA should be analyzed in depth. In this study, SNWAs were synthesized as a foundational matrix, of which the nanowire diameters were uniformly distributed, by adopting a straightforward and simple chemical vapor deposition (CVD) method. Subsequently, the SiO2 sheath thickness on the external surface of SiC nanowires was modified through controlled oxidation modulation. Noteworthily, the above-described precise control over the SiO2 sheath thickness served a dual purpose: it enables optimal impedance matching in the SNWA while substantially augmenting its dielectric loss capacity. To the best of our knowledge, this study has underscored the significance of optimizing the SiC/SiO2 heterointerface for enhancing MA in SNWA for the first time. Such optimization is promising to significantly facilitate the design and synthesis of SiC nanowire-based EMA.
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