Graphene-Based Sandwich Structures for Frequency Selectable Electromagnetic Shielding.
Graphene-Based Sandwich Structures for Frequency Selectable Electromagnetic Shielding.
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DOI：
10.1021/acsami.7b08229
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发表时间：
2017-10
影响因子：
9.5
通讯作者：
Weili Song;Congcheng Gong;Huimin Li;Xiaodong Cheng;Mingji Chen;Xujin Yuan;Haosen Chen;Yazheng Yang-Yazh
中科院分区：
文献类型：
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作者：
Weili Song;Congcheng Gong;Huimin Li;Xiaodong Cheng;Mingji Chen;Xujin Yuan;Haosen Chen;Yazheng Yang-Yazh
随着电子和通信技术的飞速发展，具有电磁干扰屏蔽性能的材料对减轻各种设备的电磁干扰具有重要意义。在这项工作中，我们提出了新的三明治结构操纵的电磁波传输，它拥有独特的电磁干扰屏蔽功能的频率选择性。通过采用电和磁损耗间隔物，所得到的夹层结构被赋予可调谐的EMI屏蔽性能，显示出整体屏蔽效能的显著改善沿着显著的屏蔽峰偏移。这些机制表明，多个界面，电磁损耗介质，和代表性的EM波长的变化可能是剪裁EMI屏蔽性能的关键作用。这些结果提供了一种通用的策略，可以扩展到其他频率范围和各种类型的夹层结构，为设计和制造先进的电磁衰减材料和器件提供了巨大的机会。
Due to substantial development of electronics and telecommunication techniques, materials with electromagnetic interference (EMI) shielding performance are significant in alleviating the interference impacts induced from a remarkable variety of devices. In the work, we propose novel sandwich structures for manipulating the EM wave transport, which holds unique EMI shielding features of frequency selectivity. By employing electrical and magnetic loss spacers, the resultant sandwich structures are endowed with tunable EMI shielding performance, showing substantial improvements in overall shielding effectiveness along with pronounced shielding peak shift. The mechanisms suggest that the multiple interfaces, electromagnetic loss media, and changes of representative EM wavelength could be critical roles in tailoring the EMI shielding performance. The results provide a versatile strategy that could be extended in other frequency ranges and various types of sandwich structures, promising great opportunities for designing and fabricating advanced electromagnetic attenuation materials and devices.