Electromagnetic wave leakage absorption film using CNT spray

Seiki Chiba; Mikio Waki; Makoto Takeshita; Mitsugu Uejima; Kohei Arakawa; Kazuhiro Ohyama; Takumi Yoshizawa; Sotoshi Yoshizawa; Yutaka Yoshizawa

doi:10.1117/12.2582918

12 April 2021 Electromagnetic wave leakage absorption film using CNT spray

Seiki Chiba, Mikio Waki, Makoto Takeshita, Mitsugu Uejima, Kohei Arakawa, Kazuhiro Ohyama, Takumi Yoshizawa, Sotoshi Yoshizawa, Yutaka Yoshizawa

Author Affiliations +

Proceedings Volume 11745, Passive and Active Millimeter-Wave Imaging XXIV; 117450E (2021) https://doi.org/10.1117/12.2582918
Event: SPIE Defense + Commercial Sensing, 2021, Online Only

Abstract

A CNT has a very low light density, about half that of aluminum, but its strength is about 20 times that of steel. Its current density resistance is more than 1000 times that of copper, and it also has higher thermal conductivity than copper. Although it is an excellent material that can be expected to be used in various fields, using it effectively proves to be a difficult task. We have succeeded in developing a flexible and stretchable CNT paint with the aim of applying this excellent material to DEA electrodes. This CNT paint can be easily applied to various materials by using a spray or other methods and since it can expand and contract, it can be applied to easily deformable materials such as polymers, wood, paper, and resin. It is possible to add the characteristics of CNTs to various materials. One of the characteristics of CNTs that has been attracting attention in recent years is the radio wave absorption effect. As the understanding of this process is expected to grow ever more important, the purpose of this paper is to verify the effect of radio wave absorption, one of the methods of utilizing CNTs, in the range from single to high double digit GHz bands.

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Seiki Chiba, Mikio Waki, Makoto Takeshita, Mitsugu Uejima, Kohei Arakawa, Kazuhiro Ohyama, Takumi Yoshizawa, Sotoshi Yoshizawa, and Yutaka Yoshizawa "Electromagnetic wave leakage absorption film using CNT spray", Proc. SPIE 11745, Passive and Active Millimeter-Wave Imaging XXIV, 117450E (12 April 2021); https://doi.org/10.1117/12.2582918

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