Terahertz shielding properties of carbon black based polymer nanocomposites
Authors:
- Klaudia Żerańska-Chudek,
- Agnieszka Siemion,
- Norbert Pałka,
- Ahmed Mdarhri,
- Ilham Elaboudi,
- Christian Brosseau,
- Mariusz Zdrojek
Abstract
The majority of industry using high-speed communication systems is shifting towards higher frequencies, namely the terahertz range, to meet demands of more effective data transfer. Due to the rising number of devices working in terahertz range, effective shielding of electromagnetic interference (EMI) is required, and thus the need for novel shielding materials to reduce the electromagnetic pollution. Here, we show a study on optical and electrical properties of a series of ethylene co-butyl acrylate/carbon black (EBA/CB) composites with various CB loading. We investi-gate the transmittance, reflectance, shielding efficiency, absorption coefficient, refractive index and complex dielectric permittivity of the fabricated composites. Finally, we report a material that ex-hibits superior shielding efficiency (SE)—80 dB at 0.9 THz (14.44 vol% CB loading, 1 mm thick)— which is one of the highest SE values among non-metallic composite materials reported in the liter-ature thus far. Importantly, 99% of the incoming radiation is absorbed by the material, significantly increasing its applicability. The absorption coefficient (α) reaches ~100 cm−1 for the samples with highest CB loading. The EBA/CB composites can be used as lightweight and flexible shielding packaging materials for electronics, as passive terahertz absorbers or as radiation shields for stealth ap-plications.
- Record ID
- WUTb7381ea585364189b7bccc7162e1101e
- Author
- Journal series
- Materials, ISSN 1996-1944
- Issue year
- 2021
- Vol
- 14
- No
- 4
- Pages
- 1-12
- Article number
- 835
- ASJC Classification
- DOI
- DOI:10.3390/ma14040835 Opening in a new tab
- URL
- https://www.mdpi.com/1996-1944/14/4/835 Opening in a new tab
- Language
- eng (en) English
- License
- File
-
- File: 1
- Terahertz shielding properties of carbon black based polymer nanocomposites, File WUTb7381ea585364189b7bccc7162e1101e.pdf / 2 MB
- WUTb7381ea585364189b7bccc7162e1101e.pdf
- publication date: 07-07-2021
- Terahertz shielding properties of carbon black based polymer nanocomposites, File WUTb7381ea585364189b7bccc7162e1101e.pdf / 2 MB
-
- Score (nominal)
- 140
- Score source
- journalList
- Score
- = 140.0, 06-05-2022, ArticleFromJournal
- Publication indicators
- = 5; = 2; = 4; : 2017 = 1.285; : 2018 (2 years) = 2.972 - 2018 (5 years) =3.532
- Citation count
- 5
- Uniform Resource Identifier
- https://repo.pw.edu.pl/info/article/WUTb7381ea585364189b7bccc7162e1101e/
- URN
urn:pw-repo:WUTb7381ea585364189b7bccc7162e1101e
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or PerishOpening in a new tab system.