Multifunctional Textiles Enabled by Simultaneous Interaction with Infrared and Microwave Electromagnetic Waves

Wang, Jie; Hu, Qiao; Huang, Jinhua; Li, Jia; Lu, Yuehui; Shen, Bin; Zheng, Wenge; Song, Weijie

doi:10.1002/admi.202102322

Cited by 12 publications

(13 citation statements)

References 36 publications

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“…Wang et al 117 proposed an inorganic−organic polytetrafluoroethylene (PTFE)/Ag/PTFE (IO-PAP) blocks that can simultaneously block infrared radiation and shield EMI, besides showing personal warming. PTFE and Ag were deposited on PU-coated textiles using an eco-friendly magnetic sputtering technique.…”

Section: Acs Applied Electronic Materialsmentioning

confidence: 99%

Evolution of Surface Engineering in the Development of Textile-Based EMI Shields─A Review

Jagadeshvaran

Bose

2023

ACS Appl. Electron. Mater.

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Innovations in electronics and the rapid developments in communication systems have been unprecedented and made life easier. One such advancement is wireless electronics, where gadgets operate in gigahertz frequencies, transmitting and receiving signals in the form of electromagnetic (EM) waves during their operation. The increased presence of EM waves in the atmosphere has led to EM pollution. With the miniaturization of devices, there is an increased volume of complex circuitry in a limited space, causing interference between them during operation, termed “electromagnetic interference” (EMI). EMI concerns are rising as they are considered severe threats to devices and their functioning. Flexible and lightweight EMI shielding materials are vital to combat this issue. Functional textiles are considered promising candidates with increasing attention due to their outstanding flexibility. They offer excellent design scope and can be integrated with different materials like metals, polymers, and their composites in different levels (fiber, yarn, and fabric). This review provides a concise note on the fundamental concepts and mechanisms of EMI shielding and emphasizes how textiles for EMI shielding applications have evolved over the past two decades. From metal yarn coweaved fabrics to multifunctional coatings, tremendous progress has been made design-wise. This review presents a holistic view of all these design architectures, critically analyzing their pros and cons, and a perspective indicating future research directions.

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Section: Acs Applied Electronic Materialsmentioning

confidence: 99%

Evolution of Surface Engineering in the Development of Textile-Based EMI Shields─A Review

Jagadeshvaran

Bose

2023

ACS Appl. Electron. Mater.

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“…However, its shielding mechanism was reflection. 32 Shi et al put forward an absorption bishielding opaque material with an SE > 40 dB at the X band, which did not meet the criterion of g s ≥ 1 and SE R < 3.01. 33 The material in ref 34 had a microwave absorption over 90% in 3−8 GHz and a very low IR emissivity of about 0.2 at 8−14 μm, but it was opaque and inflexible.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, many efforts have been made on the design of multifunctional materials, which can simultaneously shield microwave and IR radiation based on conventional materials , and MMAs. , With the help of melamine-based hybrid foam, an IR and EMI shielding opaque material with ultralow IR emissivity (∼0.1) at 3–14 μm and an ultrahigh SE = 47 dB at the X band was proposed. However, its shielding mechanism was reflection . Shi et al put forward an absorption bishielding opaque material with an SE > 40 dB at the X band, which did not meet the criterion of g s ≥ 1 and SE R < 3.01 .…”

Section: Introductionmentioning

confidence: 99%

“…However, as H 2 O and CO 2 and so on in the atmosphere have a strong absorption of infrared radiation in certain bands, the infrared radiation only has 0.7–2.6, 3–5, and 8–14 μm bands left . In recent years, many efforts have been made on the design of multifunctional materials, which can simultaneously shield microwave and IR radiation based on conventional materials , and MMAs. , With the help of melamine-based hybrid foam, an IR and EMI shielding opaque material with ultralow IR emissivity (∼0.1) at 3–14 μm and an ultrahigh SE = 47 dB at the X band was proposed. However, its shielding mechanism was reflection .…”

Section: Introductionmentioning

confidence: 99%

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Multifunctional Green Electromagnetic Interference Shielding Material for the Sub-6-GHz Band

Jiang

Zhu

et al. 2022

ACS Appl. Electron. Mater.

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Multifunctionality, green, flexibility, and low reflectivity are promising development tendencies of electromagnetic interference (EMI) shielding materials. However, it is still a challenge to effectively integrate multiple functions into a single material. Herein, we reported a multifunctional, green, and flexible EMI shielding material with low reflection. It is a multilayer structure consisting of a low-infrared emission layer, a polyvinyl chloride (PVC) compensation layer, and a microwave absorption layer. The shielding effectiveness (SE) of the proposed multifunctional material can reach above 28 dB with a green index g s ≥ 1 and reflection loss SE R < 3.01 dB in the sub-6 GHz band. Furthermore, an ultralow infrared (IR) emissivity of 0.17 within the 3–15 μm spectrum is obtained by optimizing the pattern of the indium tin oxide (ITO) part. The designed material is also optically transparent, flexible, wide-angle, low-profile, and polarization-insensitive. Excellent consistency between the experimental and simulation results demonstrates that this multifunction shielding material can find practical applications in signal shielding scenarios in the sub-6G microwave and 3–15 μm infrared regimes.

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“…41 Zhou et al 41 found that the coated fabric showed good infrared camouflage and excellent electromagnetic interference (EMI) camouflage effect under the synergistic effect of polyaniline, silverplated structure, and nano zinc oxide. Wang et al 42 proposed depositing inorganic organic polytetrafluoroethylene/Ag/polytetrafluoroethylene components on polyurethane coated textiles using magnetron sputtering technology. A smooth and durable Ag layer was grown, which could avoid the large roughness and few connections between fibers in traditional textiles.…”

mentioning

confidence: 99%

Low infrared emissivity composite materials for multi-band camouflage

Zhao

Feng

2023

Textile Research Journal

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Infrared camouflage textile materials have the advantages of softness, portability, and wearability. They are the main raw materials of infrared camouflage clothing, backpacks, camouflage nets, and tents. In this paper, from the perspective of reducing infrared emissivity to achieve the purpose of camouflage, metal materials were selected as functional particles and combined with textile materials to prepare polyurethane infrared camouflage composite materials with low emissivity, whose lowest emissivity in the wavelength range of 2–22 μm can reach 0.58. On this basis, two kinds of low infrared emissivity composite materials that can be used for multi-band camouflage were developed. One is to add modified graphene into the coating to improve the conductivity of the coating and reduce the gloss of the coating, to prepare visible and infrared camouflage coated fabric. When the amount of graphene is 10% of the filler content, the coated fabric has low gloss and low emissivity at the same time. Compared with the fabric without graphene coating, the glossiness is reduced by 31%, while the infrared emissivity is only increased by 0.1. The second is to prepare composite materials with infrared camouflage and microwave absorption functions by compounding low infrared emissivity and microwave absorbing coating. The minimum infrared emissivity of the two composites was 0.76 and 0.58, respectively. In this study, a variety of materials was used to prepare low infrared emissivity fabrics with low glossiness or good microwave absorption capacity, which provided a reference for the preparation of multi-band camouflage fabrics and was expected to be applied in the field of military camouflage.

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Multifunctional Textiles Enabled by Simultaneous Interaction with Infrared and Microwave Electromagnetic Waves

Cited by 12 publications

References 36 publications

Evolution of Surface Engineering in the Development of Textile-Based EMI Shields─A Review

Evolution of Surface Engineering in the Development of Textile-Based EMI Shields─A Review

Multifunctional Green Electromagnetic Interference Shielding Material for the Sub-6-GHz Band

Low infrared emissivity composite materials for multi-band camouflage

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