Flexible and excellent electromagnetic interference shielding film with porous alternating PVA-derived carbon and graphene layers
Summary: Recently, the design of graphene-based films with elaborately controlled microstructures and optimized electromagnetic interference shielding (EMI) properties can effectively improve EM energy attenuation and conversion. Herein, inspired by the structure of multi-layer steamed bread, an alt...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-10-01
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| Series: | iScience |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004223020527 |
| _version_ | 1797647845608652800 |
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| author | Jiatong Li Jinzhe Li Tian Li Zhengkang Xu Yao Chen Likui Zhang Qing Qi Benliang Liang Fanbin Meng |
| author_facet | Jiatong Li Jinzhe Li Tian Li Zhengkang Xu Yao Chen Likui Zhang Qing Qi Benliang Liang Fanbin Meng |
| author_sort | Jiatong Li |
| collection | DOAJ |
| description | Summary: Recently, the design of graphene-based films with elaborately controlled microstructures and optimized electromagnetic interference shielding (EMI) properties can effectively improve EM energy attenuation and conversion. Herein, inspired by the structure of multi-layer steamed bread, an alternating multilayered structure with polyvinyl alcohol (PVA)-derived carbon layers and graphene/electrospun carbon nanofibers layers was designed through alternating vacuum-assisted filtration method. The composite film exhibited favorable impedance matching, abundant loss mechanism, and excellent EMI shielding ability, resulting in absorption dominated shielding characteristic. Thus, the resultant 7-layer alternating composite films with a thickness of 160 μm achieved an EMI shielding effectiveness (EMI SE) of up to 80 dB in the X-band. Specially, finite element analysis was applied to demonstrate the importance of seven-layer film alternations and detailed analysis of electromagnetic shielding mechanisms. Taken together, this effort opens a creative avenue for designing and constructing flexible composite films with excellent EMI shielding performance. |
| first_indexed | 2024-03-11T15:22:26Z |
| format | Article |
| id | doaj.art-c44eac0d4e9d4aa58d6590f5be2988a1 |
| institution | Directory Open Access Journal |
| issn | 2589-0042 |
| language | English |
| last_indexed | 2024-03-11T15:22:26Z |
| publishDate | 2023-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj.art-c44eac0d4e9d4aa58d6590f5be2988a12023-10-28T05:09:11ZengElsevieriScience2589-00422023-10-012610107975Flexible and excellent electromagnetic interference shielding film with porous alternating PVA-derived carbon and graphene layersJiatong Li0Jinzhe Li1Tian Li2Zhengkang Xu3Yao Chen4Likui Zhang5Qing Qi6Benliang Liang7Fanbin Meng8Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, P.R. ChinaKey Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, P.R. ChinaKey Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, P.R. ChinaKey Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, P.R. ChinaKey Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, P.R. ChinaKey Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, P.R. ChinaKey Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, P.R. China; Corresponding authorSchool of Physical Science and Engineering, Beijing Jiaotong University, Beijing 100044, China; Corresponding authorKey Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, P.R. China; Shenzhen Institute of Southwest Jiaotong University, Shenzhen 518000, China; Corresponding authorSummary: Recently, the design of graphene-based films with elaborately controlled microstructures and optimized electromagnetic interference shielding (EMI) properties can effectively improve EM energy attenuation and conversion. Herein, inspired by the structure of multi-layer steamed bread, an alternating multilayered structure with polyvinyl alcohol (PVA)-derived carbon layers and graphene/electrospun carbon nanofibers layers was designed through alternating vacuum-assisted filtration method. The composite film exhibited favorable impedance matching, abundant loss mechanism, and excellent EMI shielding ability, resulting in absorption dominated shielding characteristic. Thus, the resultant 7-layer alternating composite films with a thickness of 160 μm achieved an EMI shielding effectiveness (EMI SE) of up to 80 dB in the X-band. Specially, finite element analysis was applied to demonstrate the importance of seven-layer film alternations and detailed analysis of electromagnetic shielding mechanisms. Taken together, this effort opens a creative avenue for designing and constructing flexible composite films with excellent EMI shielding performance.http://www.sciencedirect.com/science/article/pii/S2589004223020527PhysicsElectromagneticsQuantum physics |
| spellingShingle | Jiatong Li Jinzhe Li Tian Li Zhengkang Xu Yao Chen Likui Zhang Qing Qi Benliang Liang Fanbin Meng Flexible and excellent electromagnetic interference shielding film with porous alternating PVA-derived carbon and graphene layers iScience Physics Electromagnetics Quantum physics |
| title | Flexible and excellent electromagnetic interference shielding film with porous alternating PVA-derived carbon and graphene layers |
| title_full | Flexible and excellent electromagnetic interference shielding film with porous alternating PVA-derived carbon and graphene layers |
| title_fullStr | Flexible and excellent electromagnetic interference shielding film with porous alternating PVA-derived carbon and graphene layers |
| title_full_unstemmed | Flexible and excellent electromagnetic interference shielding film with porous alternating PVA-derived carbon and graphene layers |
| title_short | Flexible and excellent electromagnetic interference shielding film with porous alternating PVA-derived carbon and graphene layers |
| title_sort | flexible and excellent electromagnetic interference shielding film with porous alternating pva derived carbon and graphene layers |
| topic | Physics Electromagnetics Quantum physics |
| url | http://www.sciencedirect.com/science/article/pii/S2589004223020527 |
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