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Research Article | Online first | Published: 22 April 2024

High-performance wearable bimetallic nanowire-assisted composite foams for efficient electromagnetic interference shielding, infrared stealth, and piezoresistive sensing

Show Author's Information Tianyi Hang1,  Lijie Zhou1,  Chenhui Xu1,  Yiming Chen1( ),  Jiahui Shen1,  Jiajia Zheng1( ),  Pingan Yang2,  Xiping Li1,  Heng Luo3,  Guoxiu Tong4( )
Key Laboratory of Urban Rail Transit Intelligent Operation and Maintenance Technology and Equipment of Zhejiang Province, College of Engineering, Zhejiang Normal University, Jinhua 321004, China
School of Automation, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua 321004, China
Keywords:
electromagnetic interference shielding, metal nanowires, infrared stealth, wearable sensors, porous foams
Topics:
MetalsNanowiresNetwork architecturePressure sensorsStructural design
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Hang T, Zhou L, Xu C, et al. High-performance wearable bimetallic nanowire-assisted composite foams for efficient electromagnetic interference shielding, infrared stealth, and piezoresistive sensing. Nano Research, 2024, https://doi.org/10.1007/s12274-024-6565-9
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Abstract Full text Electronic supplementary material About this article

With the accelerated development of modern detection and communication technology, the multifunctional wearable materials with excellent electromagnetic interference (EMI) shielding, infrared stealth, and human monitoring for improving military combat capability have received extensive attention. In this work, the lightweight melamine foam (MF)@silver nanowires (AgNWs)-iron nanowires (FeNWs) (AgFe-MF) was fabricated by a vacuum-assisted dip-coating method. Due to the porous structure and synergistic electrical and magnetic losses, this lightweight (0.115 g/cm3) composite foam with an ultra-low filler content (0.62 vol.%) exhibited an ideal EMI shielding efficiency of 38.4 dB. On the other hand, the AgFe-MF realized a powerful multi-functional integration. The surface saturation temperature of the AgFe-MF reached 94.2 °C under a low applied voltage of 1.8 V and remained extremely fast heating and cooling response and terrific working stability, resulting in excellent infrared stealth and camouflage effects. Furthermore, taking virtues of the elastic porous conductive architecture, the AgFe-MF was utilized as a piezoresistive sensor exhibiting board compressive interval of 0–1.62 kPa (50% strain) with a good sensitivity of 0.57 kPa−1. This work will provide new ideas and insights for developing multifunctional wearable devices in the fields of EMI shielding, thermal management, and piezoresistive sensing.


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Abstract
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Electronic supplementary material
About this article

High-performance wearable bimetallic nanowire-assisted composite foams for efficient electromagnetic interference shielding, infrared stealth, and piezoresistive sensing

Show Author's information Tianyi Hang1, Lijie Zhou1, Chenhui Xu1, Yiming Chen1( ), Jiahui Shen1, Jiajia Zheng1( ), Pingan Yang2, Xiping Li1, Heng Luo3, Guoxiu Tong4( )
Key Laboratory of Urban Rail Transit Intelligent Operation and Maintenance Technology and Equipment of Zhejiang Province, College of Engineering, Zhejiang Normal University, Jinhua 321004, China
School of Automation, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua 321004, China

Abstract

With the accelerated development of modern detection and communication technology, the multifunctional wearable materials with excellent electromagnetic interference (EMI) shielding, infrared stealth, and human monitoring for improving military combat capability have received extensive attention. In this work, the lightweight melamine foam (MF)@silver nanowires (AgNWs)-iron nanowires (FeNWs) (AgFe-MF) was fabricated by a vacuum-assisted dip-coating method. Due to the porous structure and synergistic electrical and magnetic losses, this lightweight (0.115 g/cm3) composite foam with an ultra-low filler content (0.62 vol.%) exhibited an ideal EMI shielding efficiency of 38.4 dB. On the other hand, the AgFe-MF realized a powerful multi-functional integration. The surface saturation temperature of the AgFe-MF reached 94.2 °C under a low applied voltage of 1.8 V and remained extremely fast heating and cooling response and terrific working stability, resulting in excellent infrared stealth and camouflage effects. Furthermore, taking virtues of the elastic porous conductive architecture, the AgFe-MF was utilized as a piezoresistive sensor exhibiting board compressive interval of 0–1.62 kPa (50% strain) with a good sensitivity of 0.57 kPa−1. This work will provide new ideas and insights for developing multifunctional wearable devices in the fields of EMI shielding, thermal management, and piezoresistive sensing.

Keywords: electromagnetic interference shielding, metal nanowires, infrared stealth, wearable sensors, porous foams

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Publication history
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Acknowledgements

Publication history

Received: 18 December 2023
Revised: 04 February 2024
Accepted: 12 February 2024
Published: 22 April 2024

Copyright

© Tsinghua University Press 2024

Acknowledgements

Acknowledgements

This work was supported by the Zhejiang Provincial Natural Science Foundation of China (No. LQ22E030016), the National Natural Science Foundation of China (Nos. 52275137 and 51705467), the China Postdoctoral Science Foundation (No. 2022M722831), the Postdoctoral Research Selected Funding Project of Zhejiang Province (No. ZJ2022063), and the Self-Topic Fund of Zhejiang Normal University (No. 2020ZS04).

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