Core-shell structured tungsten carbide / polypyrrole metacomposites with tailorable negative permittivity at the radio frequency
Core-shell structured tungsten carbide / polypyrrole metacomposites with tailorable negative permittivity at the radio frequency
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核壳结构碳化钨/聚吡咯复合材料，在射频下具有可定制的负介电常数
DOI：
10.1016/j.polymer.2019.122125
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发表时间：
2020-02
期刊：
影响因子：
4.6
通讯作者：
Fan Runhua
中科院分区：
文献类型：
--
作者：
Xu Ciqun;Fan Guohua;Qu Yunpeng;Liu Yao;Zhang Zidong;Fan Runhua
介电常数为弱负值的超复合材料被认为是下一代电子学的候选材料。我们建议通过开发核-壳结构的WC/PPy复合材料来制备这种准复合材料。通过控制WC/PPy复合材料中WC的质量比，实现了对电抗、电导率和介电常数等性能的调节。当WC含量增加到一定程度时，形成导电网络，导致弱负介电常数，这与自由电子的等离子体振荡有关。由于Lorentz介质谐振，还实现了频率可调的负介电常数，这为获得负介电常数提供了一种替代策略。本工作将对超复合材料的进一步研究和应用起到推动作用。
Metacomposites which unveil weakly negative permittivity have been regarded as a promising candidate for next-generation electronics. We propose to prepare such metacomposites by developing the core-shell structured WC/PPy composites. The regulation of properties, including reactance, conductivity, and permittivity, has been achieved by controlling the mass ratio of WC in the WC/PPy composite. Conductive networks are constructed when the WC fraction is increased to a certain level, leading to a weakly negative permittivity, which is related to the plasma oscillation of free electrons. Owing to Lorentz dielectric resonance, a frequency-regulated negative permittivity is also realized, which provides an alternative strategy to obtain negative permittivity. This work will push forward further research and applications of metacomposites.
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DOI：
10.1103/physrevb.42.7563
发表时间：
1990-10
期刊：
Physical review. B, Condensed matter
影响因子：
--
作者：
Tan;Kang;Neoh;Ong
通讯作者：
Tan;Kang;Neoh;Ong
影响因子：
20.1
作者：
Haikun Wu-;Yan Zhang;Rui Yin;Wenling Zhao;Xiaoming Li;Lei Qian
通讯作者：
Haikun Wu-;Yan Zhang;Rui Yin;Wenling Zhao;Xiaoming Li;Lei Qian
渗流复合材料中 SiO2 涂层金属颗粒调节负介电常数
影响因子：
6.2
作者：
Xie Peitao;Sun Kai;Wang Zhongyang;Liu Yao;Fan Runhua;Zhang Zidong;Schumacher Gerhard
通讯作者：
Schumacher Gerhard
渗流银/钇铁石榴石纳米复合材料中具有类法诺共振和磁性的可调负介电常数
影响因子：
3.7
作者：
Sun Kai;Fan Runhua;Yin Yansheng;Guo Jiang;Li Xiaofeng;Lei Yanhua;An Liqiong;Cheng Chuanbing;Guo Zhanhu
通讯作者：
Guo Zhanhu
通过积木渗透复合材料负介电常数的调节机制
影响因子：
4
作者：
Xie Peitao;Wang Zhongyang;Sun Kai;Cheng Chuanbing;Liu Yao;Fan Runhua
通讯作者：
Fan Runhua