1. Ultra-flexible silver/iron nanowire decorated melamine composite foams for high-efficiency electromagnetic wave absorption and thermal management.
- Author
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Hang, Tianyi, Xu, Chenhui, Shen, Jiahui, Zheng, Jiajia, Zhou, Lijie, Li, Mengjia, Li, Xiping, Jiang, Shaohua, Yang, Pingan, Zhou, Wei, and Chen, Yiming
- Subjects
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ELECTROMAGNETIC wave absorption , *FOAM , *NANOWIRES , *IRON , *MELAMINE , *WEARABLE technology , *MAGNETIC flux leakage - Abstract
[Display omitted] • Ultra-flexible bimetallic nanowire decorated foams via facile dip-coating method. • An ultra-low filler content of 0.22 vol% for high performances. • Effective microwave absorption of −69.61 dB with ultra-wide absorption bandwidth. • Integrated multi-functional applications in one. Nowadays, functional electronic devices with excellent flexibility and thermal management capability for effective electromagnetic wave absorption are urgently in demand. Herein, a novel and highly flexible silver nanowire (AgNW)/iron nanowire (FeNW) decorated melamine composite foam (AgFe-MF) was prepared via simple dip-coating process. Owing to optimal impedance matching, synergistic dielectric and magnetic losses as well as three-dimensional porous structure, the AgFe-MF with an ultra-low filler content (0.22 vol%) exhibited an outstanding minimum reflection loss of −69.61 dB, and the best effective absorption bandwidth (EAB) could reach up to 6.37 GHz. Importantly, the EAB of long-time working AgFe-MF was enhanced to 7.01 GHz after 1000 compress-release cycles under 40 % strain. Besides, it also featured considerate Joule heating capacity and achieved a saturation temperature of over 85.7 ℃ under 2.6 V voltage. The impressive thermal isolation and long-term stability ensured the safety used as portable heater. Therefore, this work will provide a vital slight for fabricating smart wearable electronic devices with integrated anti-electromagnetic radiation and personalized thermal management performances towards potential thermal and health threats. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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