Electromagnetic interference shielding effectiveness of monolayer graphene

被引：191
作者：
Hong, Seul Ki [1 ]
Kim, Ki Yeong [1 ]
Kim, Taek Yong [1 ]
Kim, Jong Hoon [1 ]
Park, Seong Wook [1 ]
Kim, Joung Ho [1 ]
Cho, Byung Jin [1 ]
机构：
[1] Korea Adv Inst Sci & Technol, Dept Elect Engn, Taejon 305701, South Korea
来源：
NANOTECHNOLOGY | 2012年 / 23卷 / 45期
基金：
新加坡国家研究基金会;
关键词：
FILMS;
D O I：
10.1088/0957-4484/23/45/455704
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We report the first experimental results on the electromagnetic interference (EMI) shielding effectiveness (SE) of monolayer graphene. The monolayer CVD graphene has an average SE value of 2.27 dB, corresponding to similar to 40% shielding of incident waves. CVD graphene shows more than seven times (in terms of dB) greater SE than gold film. The dominant mechanism is absorption rather than reflection, and the portion of absorption decreases with an increase in the number of graphene layers. Our modeling work shows that plane-wave theory for metal shielding is also applicable to graphene. The model predicts that ideal monolayer graphene can shield as much as 97.8% of EMI. This suggests the feasibility of manufacturing an ultrathin, transparent, and flexible EMI shield by single or few-layer graphene.
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页数：5
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