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Liang S, Guan H, Zhang H, Han X, Zhao J, Dou S, Hao S, Zhou H, Geng C, Zhao T, Gu J, Wei H, Li Y. Tunable High-Performance Electromagnetic Interference Shielding of VO 2 Nanowires-Based Composite. ACS Appl Mater Interfaces 2024. [PMID: 38607616 DOI: 10.1021/acsami.3c19326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
The unique metal-insulator transition of VO2 is very suitable for dynamic electromagnetic (EM) regulation materials due to its sharp change in electrical conductivity. Here, we have developed an off/on switchable electromagnetic interference (EMI) shielding composite by interconnecting VO2 nanowires (NWs) in poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) to form conductive networks, resulting in outstanding performance at the X and Ku bands with maximum change values of 44.8 and 59.4 dB, respectively. The unique insulator-to-metal transition (IMT) of VO2 NWs has dominated the variation of polarization loss (εp″) and conductivity loss (εσ″) for the composites, which is the mechanism of EMI shielding switching between off and on states. Furthermore, the composite exhibits good cycling stability of the off/on switchable EMI shielding performance and has excellent mechanical properties, especially with 200 times abrasion resistance without obvious weight loss. This study provides a unique approach for dynamic switching of EM response with the potential to construct practical intelligent EM response systems for next-generation smart electromagnetic devices in various scenarios.
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Affiliation(s)
- Shuhui Liang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001 Harbin, China
| | - Huan Guan
- Center for Composite Materials and Structure, Harbin Institute of Technology, 150001 Harbin, China
| | - Hainan Zhang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001 Harbin, China
| | - Xiangge Han
- Center for Composite Materials and Structure, Harbin Institute of Technology, 150001 Harbin, China
| | - Jiupeng Zhao
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001 Harbin, China
| | - Shuliang Dou
- Center for Composite Materials and Structure, Harbin Institute of Technology, 150001 Harbin, China
- Suzhou Laboratory, Suzhou 2215123, China
| | - Sue Hao
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001 Harbin, China
| | - Haoxin Zhou
- Center for Composite Materials and Structure, Harbin Institute of Technology, 150001 Harbin, China
| | - Chenchen Geng
- Center for Composite Materials and Structure, Harbin Institute of Technology, 150001 Harbin, China
| | - Tao Zhao
- Center for Composite Materials and Structure, Harbin Institute of Technology, 150001 Harbin, China
| | - Jinxin Gu
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001 Harbin, China
- Suzhou Laboratory, Suzhou 2215123, China
| | - Hang Wei
- Center for Composite Materials and Structure, Harbin Institute of Technology, 150001 Harbin, China
| | - Yao Li
- Center for Composite Materials and Structure, Harbin Institute of Technology, 150001 Harbin, China
- Suzhou Laboratory, Suzhou 2215123, China
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