Orthogonal pattern of spinnable multiwall carbon nanotubes for electromagnetic interference shielding effectiveness

Duck Weon Lee; Hyunsoo Kim; Ji Hwan Moon; Jae Hun Jeong; Hyeon Jun Sim; Bum Joon Kim; Jae Sang Hyeon; Ray H. Baughman; Seon Jeong Kim

doi:10.1016/j.carbon.2019.05.052

Orthogonal pattern of spinnable multiwall carbon nanotubes for electromagnetic interference shielding effectiveness

Duck Weon Lee, Hyunsoo Kim, Ji Hwan Moon, Jae Hun Jeong, Hyeon Jun Sim, Bum Joon Kim, Jae Sang Hyeon, Ray H. Baughman, Seon Jeong Kim

Department of Energy and Materials Engineering

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

23 Scopus citations

Abstract

The need for thin and lightweight electromagnetic interference shielding materials is rapidly increasing in several industries, such as aerospace and telecommunication. This research finds that a shielding material, which is developed by the orthogonal pattern of spinnable multiwall carbon nanotubes (MWNTs), is ultra-light weight, thin, and has a high shielding effectiveness (SE). An orthogonal pattern, generated by just alignment of the spinnable MWNTs without adding any support materials such as polymers, ceramics, and magnets demonstrates that it is possible to efficiently attenuate electromagnetic interference (EMI) in the X-band frequency range (8.2–12.4 GHz). EMI SE in the developed shielding material is about 19.2 dB with a specific shielding effectiveness (SSE)/t (thickness) value of 73,633 dB cm² g⁻¹ at a thickness of about 4.48 μm. In addition, absorption effectiveness in this shielding material is as high as 96.3%, which provides excellent ability to reduce the secondary damage by reflection.

Original language	English
Pages (from-to)	33-39
Number of pages	7
Journal	Carbon
Volume	152
DOIs	https://doi.org/10.1016/j.carbon.2019.05.052
State	Published - Nov 2019

Keywords

Electromagnetic interference
Orthogonal pattern
Relative permittivity
Spinnable multiwall carbon nanotubes
X-band frequency range

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title = "Orthogonal pattern of spinnable multiwall carbon nanotubes for electromagnetic interference shielding effectiveness",

abstract = "The need for thin and lightweight electromagnetic interference shielding materials is rapidly increasing in several industries, such as aerospace and telecommunication. This research finds that a shielding material, which is developed by the orthogonal pattern of spinnable multiwall carbon nanotubes (MWNTs), is ultra-light weight, thin, and has a high shielding effectiveness (SE). An orthogonal pattern, generated by just alignment of the spinnable MWNTs without adding any support materials such as polymers, ceramics, and magnets demonstrates that it is possible to efficiently attenuate electromagnetic interference (EMI) in the X-band frequency range (8.2–12.4 GHz). EMI SE in the developed shielding material is about 19.2 dB with a specific shielding effectiveness (SSE)/t (thickness) value of 73,633 dB cm2 g−1 at a thickness of about 4.48 μm. In addition, absorption effectiveness in this shielding material is as high as 96.3%, which provides excellent ability to reduce the secondary damage by reflection.",

keywords = "Electromagnetic interference, Orthogonal pattern, Relative permittivity, Spinnable multiwall carbon nanotubes, X-band frequency range",

author = "Lee, {Duck Weon} and Hyunsoo Kim and Moon, {Ji Hwan} and Jeong, {Jae Hun} and Sim, {Hyeon Jun} and Kim, {Bum Joon} and Hyeon, {Jae Sang} and Baughman, {Ray H.} and Kim, {Seon Jeong}",

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year = "2019",

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doi = "10.1016/j.carbon.2019.05.052",

language = "English",

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AU - Lee, Duck Weon

AU - Kim, Hyunsoo

AU - Moon, Ji Hwan

AU - Jeong, Jae Hun

AU - Sim, Hyeon Jun

AU - Kim, Bum Joon

AU - Hyeon, Jae Sang

AU - Baughman, Ray H.

AU - Kim, Seon Jeong

PY - 2019/11

Y1 - 2019/11

N2 - The need for thin and lightweight electromagnetic interference shielding materials is rapidly increasing in several industries, such as aerospace and telecommunication. This research finds that a shielding material, which is developed by the orthogonal pattern of spinnable multiwall carbon nanotubes (MWNTs), is ultra-light weight, thin, and has a high shielding effectiveness (SE). An orthogonal pattern, generated by just alignment of the spinnable MWNTs without adding any support materials such as polymers, ceramics, and magnets demonstrates that it is possible to efficiently attenuate electromagnetic interference (EMI) in the X-band frequency range (8.2–12.4 GHz). EMI SE in the developed shielding material is about 19.2 dB with a specific shielding effectiveness (SSE)/t (thickness) value of 73,633 dB cm2 g−1 at a thickness of about 4.48 μm. In addition, absorption effectiveness in this shielding material is as high as 96.3%, which provides excellent ability to reduce the secondary damage by reflection.

AB - The need for thin and lightweight electromagnetic interference shielding materials is rapidly increasing in several industries, such as aerospace and telecommunication. This research finds that a shielding material, which is developed by the orthogonal pattern of spinnable multiwall carbon nanotubes (MWNTs), is ultra-light weight, thin, and has a high shielding effectiveness (SE). An orthogonal pattern, generated by just alignment of the spinnable MWNTs without adding any support materials such as polymers, ceramics, and magnets demonstrates that it is possible to efficiently attenuate electromagnetic interference (EMI) in the X-band frequency range (8.2–12.4 GHz). EMI SE in the developed shielding material is about 19.2 dB with a specific shielding effectiveness (SSE)/t (thickness) value of 73,633 dB cm2 g−1 at a thickness of about 4.48 μm. In addition, absorption effectiveness in this shielding material is as high as 96.3%, which provides excellent ability to reduce the secondary damage by reflection.

KW - Electromagnetic interference

KW - Orthogonal pattern

KW - Relative permittivity

KW - Spinnable multiwall carbon nanotubes

KW - X-band frequency range

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SN - 0008-6223

VL - 152

SP - 33

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JO - Carbon

JF - Carbon

ER -

Orthogonal pattern of spinnable multiwall carbon nanotubes for electromagnetic interference shielding effectiveness

Abstract

Keywords

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