Electromagnetic interference shielding effectiveness of monolayer graphene

Seul Ki Hong; Ki Yeong Kim; Taek Yong Kim; Jong Hoon Kim; Seong Wook Park; Joung Ho Kim; Byung Jin Cho

doi:10.1088/0957-4484/23/45/455704

Electromagnetic interference shielding effectiveness of monolayer graphene

Seul Ki Hong
, Ki Yeong Kim
, Taek Yong Kim
, Jong Hoon Kim
, Seong Wook Park
, Joung Ho Kim
, Byung Jin Cho

Dept. of Semiconductor Engineering

Korea Advanced Institute of Science and Technology

Research output: Contribution to journal › Article › peer-review

233 Scopus citations

Abstract

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 2.27dB, corresponding 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.

Original language	English
Article number	455704
Journal	Nanotechnology
Volume	23
Issue number	45
DOIs	https://doi.org/10.1088/0957-4484/23/45/455704
State	Published - 16 Nov 2012

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10.1088/0957-4484/23/45/455704

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title = "Electromagnetic interference shielding effectiveness of monolayer graphene",

abstract = "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 2.27dB, corresponding 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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T1 - Electromagnetic interference shielding effectiveness of monolayer graphene

AU - Hong, Seul Ki

AU - Kim, Ki Yeong

AU - Kim, Taek Yong

AU - Kim, Jong Hoon

AU - Park, Seong Wook

AU - Kim, Joung Ho

AU - Cho, Byung Jin

PY - 2012/11/16

Y1 - 2012/11/16

N2 - 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 2.27dB, corresponding 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.

AB - 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 2.27dB, corresponding 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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SN - 0957-4484

VL - 23

JO - Nanotechnology

JF - Nanotechnology

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Electromagnetic interference shielding effectiveness of monolayer graphene

Abstract

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