Net-like SiC@C coaxial nanocable towards superior lightweight and broadband microwave absorber
Net-like SiC@C coaxial nanocable towards superior lightweight and broadband microwave absorber
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网状SiC@C同轴纳米电缆实现卓越的轻质和宽带微波吸收器
DOI：
10.1016/j.compositesb.2019.107525
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发表时间：
2019-12
期刊：
影响因子：
--
通讯作者：
Lin Yusheng
中科院分区：
文献类型：
--
作者：
Zhang Meng;Lin Hui;Ding Shiqi;Wang Ting;Li Zhenjiang;Meng Alan;Li Qingdang;Lin Yusheng
采用水热碳化法制备了一种具有低密度和良好物理化学稳定性的轻质宽带微波吸收材料，即网状无定形碳包覆碳化硅同轴纳米电缆（SiC@C NC）。典型地，微波吸收性能在2.58 mm的小匹配厚度下表现出高达7.2 GHz（9.12-16.32 GHz）的宽有效吸收带宽（EAB）。同时，在整个Ku波段（11.68 ~ 18 GHz），反射损耗（RL）最小，为-51.53 dB，相应的EAB出现在2.08 mm处，表明所制备的SiC@C纳米碳作为一种上级轻质宽带微波吸收体具有广泛的应用前景。此外，系统的表征结果表明，SiC纳米线上级的微波吸收性能归因于SiC纳米线芯与非晶碳壳之间异质界面的界面极化和多次反射，以及SiC纳米线芯层错引起的电子极化和德拜偶极弛豫，以及无定形碳壳层内丰富的缺陷和无序。
In this study, a practical lightweight and broadband microwave absorber, namely, the net-like amorphous carbon-coated silicon carbide coaxial nanocables (SiC@C NCs), which had low density and excellent physicochemical stability, was successfully fabricated according to the hydrothermal-carbonization strategy. Typically, the microwave absorption performance exhibited broad effective absorption bandwidth (EAB) of up to 7.2 GHz (9.12–16.32 GHz) at a small matching thickness of 2.58 mm. Meanwhile, the minimal reflection loss (RL) value of −51.53 dB with the corresponding EAB across the whole Ku-band (11.68–18 GHz) appeared at 2.08 mm, which suggested that, the as-prepared SiC@C NCs displayed extensive application prospects as a superior lightweight and broadband microwave absorber. Moreover, the systematic characterization results indicated that, the superior microwave absorption performance was ascribed to the interfacial polarization and multiple reflections on the heterogeneous interface between the SiC nanowires (SiC NWs) core and the amorphous carbon shell, together with the electron polarization and Debye dipolar relaxation resulted from the stacking faults of SiC NWs core, and the abundant defect and disorder within the amorphous carbon shell.
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影响因子：
3.7
作者：
Chiu, Sheng-Cheng;Yu, Hsin-Chih;Li, Yuan-Yao
通讯作者：
Li, Yuan-Yao
DOI：
10.1007/s00339-012-6906-6
发表时间：
2012-04
期刊：
Applied Physics A
影响因子：
--
作者：
Hongjing Wu;Liuding Wang;Shaoli Guo;Zhongyuan Shen
通讯作者：
Hongjing Wu;Liuding Wang;Shaoli Guo;Zhongyuan Shen
影响因子：
10.9
作者：
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通讯作者：
Shanshan Xiao;H. Mei;Daoyang Han;K. Dassios;Lai-fei Cheng
影响因子：
11.9
作者：
Liu, Yanan;Liu, Yang;Kim, Hak Yong
通讯作者：
Kim, Hak Yong
影响因子：
8.4
作者：
Meng Zhang;Jian Zhao;Zhenjiang Li;Shiqi Ding;Yaqi Wang;Guanhao Qiu;A. Meng;Qingdang Li
通讯作者：
Meng Zhang;Jian Zhao;Zhenjiang Li;Shiqi Ding;Yaqi Wang;Guanhao Qiu;A. Meng;Qingdang Li