Characterization of the Electromagnetic Shielding Effectiveness of Biochar-Based Materials
Biochar and biochar-based composites are multi-functional materials with a wide range of environmental and other applications. A new and emerging application is in the field of modern communication systems as materials with significant electromagnetic shielding effectiveness. In this study, biochar...
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| Format: | Article |
| Language: | English |
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IEEE
2023-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/10018226/ |
| _version_ | 1797945030843826176 |
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| author | Christos D. Nikolopoulos Anargyros T. Baklezos Theodoros N. Kapetanakis Ioannis O. Vardiambasis Toshiki Tsubota Dimitrios Kalderis |
| author_facet | Christos D. Nikolopoulos Anargyros T. Baklezos Theodoros N. Kapetanakis Ioannis O. Vardiambasis Toshiki Tsubota Dimitrios Kalderis |
| author_sort | Christos D. Nikolopoulos |
| collection | DOAJ |
| description | Biochar and biochar-based composites are multi-functional materials with a wide range of environmental and other applications. A new and emerging application is in the field of modern communication systems as materials with significant electromagnetic shielding effectiveness. In this study, biochar was prepared from olive tree prunings which was subsequently used at various dosages to prepare composite samples with carbon black and polytetrafluoroethylene as binder. The electromagnetic shielding effectiveness of the samples were measured in the frequency range of 1–3 GHz, using a simple, user-friendly and reliable experimental set-up. The results showed that raw, unmodified biochar had a low shielding effectiveness in the range of 1.5-4 dB however, it slightly increased as the thickness of the sample increased from 0.1 to 0.5 mm. Modifying biochar with the 20 %w/w acetylene black largely increased its shielding effectiveness, reaching the value of 39 dB in the same frequency range. Our approach demonstrated that raw biochar can be used as a substrate to develop composite materials with significant shielding effectiveness and assess their performance with a quick and simple laboratory method. |
| first_indexed | 2024-04-10T20:48:56Z |
| format | Article |
| id | doaj.art-3f520eaa7b684610b355b48b6b328dfa |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-04-10T20:48:56Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-3f520eaa7b684610b355b48b6b328dfa2023-01-24T00:00:39ZengIEEEIEEE Access2169-35362023-01-01116413642010.1109/ACCESS.2023.323732710018226Characterization of the Electromagnetic Shielding Effectiveness of Biochar-Based MaterialsChristos D. Nikolopoulos0https://orcid.org/0000-0003-1344-4666Anargyros T. Baklezos1https://orcid.org/0000-0002-0532-6216Theodoros N. Kapetanakis2Ioannis O. Vardiambasis3Toshiki Tsubota4Dimitrios Kalderis5https://orcid.org/0000-0002-4983-065XDepartment of Electronic Engineering, Hellenic Mediterranean University (HMU), Chania, Crete, GreeceDepartment of Electronic Engineering, Hellenic Mediterranean University (HMU), Chania, Crete, GreeceDepartment of Electronic Engineering, Hellenic Mediterranean University (HMU), Chania, Crete, GreeceDepartment of Electronic Engineering, Hellenic Mediterranean University (HMU), Chania, Crete, GreeceDepartment of Applied Chemistry, Faculty of Engineering, Kyushu Institute of Technology, Tobata-ku, Kitakyushu, JapanDepartment of Electronic Engineering, Hellenic Mediterranean University (HMU), Chania, Crete, GreeceBiochar and biochar-based composites are multi-functional materials with a wide range of environmental and other applications. A new and emerging application is in the field of modern communication systems as materials with significant electromagnetic shielding effectiveness. In this study, biochar was prepared from olive tree prunings which was subsequently used at various dosages to prepare composite samples with carbon black and polytetrafluoroethylene as binder. The electromagnetic shielding effectiveness of the samples were measured in the frequency range of 1–3 GHz, using a simple, user-friendly and reliable experimental set-up. The results showed that raw, unmodified biochar had a low shielding effectiveness in the range of 1.5-4 dB however, it slightly increased as the thickness of the sample increased from 0.1 to 0.5 mm. Modifying biochar with the 20 %w/w acetylene black largely increased its shielding effectiveness, reaching the value of 39 dB in the same frequency range. Our approach demonstrated that raw biochar can be used as a substrate to develop composite materials with significant shielding effectiveness and assess their performance with a quick and simple laboratory method.https://ieeexplore.ieee.org/document/10018226/Electromagnetic interferenceshielding effectivenessbiocharelectric resistivitycarbon |
| spellingShingle | Christos D. Nikolopoulos Anargyros T. Baklezos Theodoros N. Kapetanakis Ioannis O. Vardiambasis Toshiki Tsubota Dimitrios Kalderis Characterization of the Electromagnetic Shielding Effectiveness of Biochar-Based Materials IEEE Access Electromagnetic interference shielding effectiveness biochar electric resistivity carbon |
| title | Characterization of the Electromagnetic Shielding Effectiveness of Biochar-Based Materials |
| title_full | Characterization of the Electromagnetic Shielding Effectiveness of Biochar-Based Materials |
| title_fullStr | Characterization of the Electromagnetic Shielding Effectiveness of Biochar-Based Materials |
| title_full_unstemmed | Characterization of the Electromagnetic Shielding Effectiveness of Biochar-Based Materials |
| title_short | Characterization of the Electromagnetic Shielding Effectiveness of Biochar-Based Materials |
| title_sort | characterization of the electromagnetic shielding effectiveness of biochar based materials |
| topic | Electromagnetic interference shielding effectiveness biochar electric resistivity carbon |
| url | https://ieeexplore.ieee.org/document/10018226/ |
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