Cellulose-Nanofiber-Based Layered Sub-Terahertz Absorbing Sheets for B5G/6G Applications

Kato, Kosaku; Feng, Shiyu; Zhao, Zixi et al.

Advanced Materials Technologies, 2025

アクセス数:88件（2026-02-15 20:22 集計）

固定URL: https://hdl.handle.net/11094/103581

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タイトル
Cellulose-Nanofiber-Based Layered Sub-Terahertz Absorbing Sheets for B5G/6G Applications
著者
NRID
1000040751087 1000040751087
ORCID
0000-0002-9977-7439 0000-0002-9977-7439
researchmap permalink
kosakukato kosakukato
Scopus Author ID
57189303489 57189303489
著者名
Kato, Kosaku
著者名
Feng, Shiyu
著者名
Zhao, Zixi
ORCID
0000-0002-5408-5148 0000-0002-5408-5148
researchmap permalink
verdadagulto verdadagulto
Scopus Author ID
57194092779 57194092779
著者名
Agulto, Verdad C.
著者名
Mizui, Ami
NRID
1000040915584 1000040915584
ORCID
0000-0002-3576-943X 0000-0002-3576-943X
researchmap permalink
tkasuga tkasuga
Scopus Author ID
57200625503 57200625503
著者名
Kasuga, Takaaki
NRID
1000040984745 1000040984745
ORCID
0000-0002-9207-3586 0000-0002-9207-3586
researchmap permalink
ShunIshioka ShunIshioka
Scopus Author ID
57215051087 57215051087
著者名
Ishioka, Shun
NRID
1000080379031 1000080379031
researchmap permalink
read0151141 read0151141
Scopus Author ID
9846851200 9846851200
著者名
Nogi, Masaya
著者名
Ota, Ichiro
著者名
Haga, Motoharu
著者名
Ueshima, Minoru
NRID
1000040361662 1000040361662
ORCID
0000-0002-0351-2197 0000-0002-0351-2197
researchmap permalink
nakajimamakoto nakajimamakoto
Scopus Author ID
55236697600 55236697600
著者名
Nakajima, Makoto
キーワード等
carbon-nanotubes
cellulose-nanofibers
terahertz absorbers
内容
Kato K., Feng S., Zhao Z., et al. Cellulose-Nanofiber-Based Layered Sub-Terahertz Absorbing Sheets for B5G/6G Applications. Advanced Materials Technologies , (2025); https://doi.org/10.1002/admt.202501829.
抄録
For the sustainable development of beyond fifth-generation (B5G) or sixth-generation (6G) wireless communication technologies operating in the sub-terahertz and terahertz range, it is highly desirable to utilize environmentally friendly materials in B5G/6G devices. Here, we report a sub-terahertz absorbing sheet made of biodegradable cellulose-nanofiber (CNF), which can be useful for achieving electromagnetic compatibility (EMC) in B5G/6G devices in a green manner. The absorber consists of one pure CNF layer sandwiched between two layers of carbon-nanotube (CNT)-dispersed CNF layers. The CNT concentration is engineered to be low (0.15 wt.%) in the layer on the wave-incident side and high (6 wt.%) in the layer on the opposite side, emulating the resistive and reflective layers of a Salisbury screen absorber, respectively. The total thickness of our absorber is as thin as 120 µm. Terahertz time-domain spectroscopy (THz-TDS) reveals its good shielding effectiveness of 28.5 dB, low reflectance of 2.5%, and high absorptance of 97.4% at 300 GHz. Additionally, an absorptance higher than 80% is achieved over a broadband frequency range from 250 to 480 GHz. Good agreement between the measured results and calculated results based on the ABCD matrix method confirms that the cancellation of reflected waves is realized as designed.
出版者
John Wiley and Sons Inc
収録物名
Advanced Materials Technologies
刊行年月
2025-11-26
言語
英語
ハンドルURL
https://hdl.handle.net/11094/103581
eISSN
2365709X
関連情報 (isIdenticalTo)
DOI (出版社版)
https://doi.org/10.1002/admt.202501829
アクセス権
open access
権利情報
This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
出版タイプ
Version of Record
カテゴリ
学術雑誌論文 Journal Article