石墨烯
电介质
材料科学
异质结
光电子学
反射(计算机编程)
吸收(声学)
电磁屏蔽
热传导
纳米技术
计算机科学
复合材料
程序设计语言
作者
Xixi Wang,Min Zhang,Jin‐Cheng Shu,Bo Wen,Wen‐Qiang Cao,Mao‐Sheng Cao
出处
期刊:Carbon
[Elsevier]
日期:2021-10-01
卷期号:184: 136-145
被引量:135
标识
DOI:10.1016/j.carbon.2021.07.099
摘要
Fifth-generation (5G) is as much a challenge as an opportunity. Getting insight into the nature of manipulating electromagnetic (EM) response is greatly imperative to guide the scientific research and technological exploitation at such a critical time. Herein, the dielectric “genes” of graphene-based heterostructure is further demonstrated experimentally and theoretically based on previous work, endowing unlimited possibility to manipulate EM response, even at elevated temperature. The dielectric “genes” categories are successfully discriminated, mainly including conduction network, intrinsic defects, impurity defects, and interfaces, and their temperature evolution is revealed in detail. By multiscale tailoring of “genes”, the maximal reflection loss (RL) is raised up to −58.1 dB at T = 423 K with a greatly reduced matching thickness of 1.16 mm, and the EM interference shielding performance emerges with an effective absorption efficiency (Aeff) higher than 70%. These findings of dielectric “genes” will open up an unexpected horizon for smart material design in the coming 5G age, providing a great boost for promoting the next-generation smart devices, as well as environmental government and protection.
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