Design and advanced manufacturing of electromagnetic interference shielding materials

Materials Today, Journal Year: 2023, Volume and Issue: 66, P. 245 - 272

Published: April 10, 2023

Electromagnetic interference (EMI) shielding is critical in electronic applications. However, the currently available EMI materials are restricted customizability and application flexibility. Recent advances manufacturing technologies have provided a unique path to achieve custom creation of solutions. A successful example additive (AM), which has enabled high design freedom, efficient performance regulation, multifunctionality simultaneously into fabricated shields, offering an opportunity start revolution field shielding. In this review, we summarize latest AM materials, aiming provide deep understanding connection between raw methods, considerations, performances shields. We first introduce mechanism subsequently focusing on characteristics representative methods as-created Based requirements create application-oriented solutions, these also critically compared. Thereafter, present state-of-the-art considerations shields examine pivotal roles realizing designs. conclude by discussing future research directions, at motivating use developments

Language: Английский

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Manipulating CNT Films with Atomic Precision for Absorption Effectiveness–Enhanced Electromagnetic Interference Shielding and Adaptive Infrared Camouflage

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: March 7, 2024

Abstract Promoting advanced functional films that integrate protective behaviors for synergetic radar, infrared (IR), and visible light is confronted with extreme challenges. The effective integration of shielding capacity IR camouflage into single‐component carbon remains an enormous challenge because limited conductivity high absorption. In this work, nanotube (CNT) excellent electromagnetic interference (EMI) shielding, switchable camouflage, energy conversion are obtained via a (FCCVD) method subsequent defect engineering strategies induced by temperature (Strategy I) N/S co‐doping II). Wherein the effect on electronic configuration as well multi‐spectra performance deeply explored. Ascribing to synergistic effects strategies, defective CNT present superior EMI effectiveness (SE) absorption ratio 86.9%, large span emissivity (0.479), which provides necessary condition various application scenarios. Under applied electric field excitation, radiation can adapt rapidly changing surroundings, such low‐high/high‐low temperatures. Besides, desirable de‐icing be achieved. This work supplies feasible strategy designing EM absorption, adaptive confront multiband surveillance.

Language: Английский

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Recent progress in carbon-based materials and loss mechanisms for electromagnetic wave absorption

Carbon, Journal Year: 2024, Volume and Issue: 219, P. 118834 - 118834

Published: Jan. 18, 2024

Language: Английский

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Diverse Structural Design Strategies of MXene-Based Macrostructure for High-Performance Electromagnetic Interference Shielding

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: Nov. 2, 2023

Abstract There is an urgent demand for flexible, lightweight, mechanically robust, excellent electromagnetic interference (EMI) shielding materials. Two-dimensional (2D) transition metal carbides/nitrides (MXenes) have been potential candidates the construction of EMI materials due to their great electrical electroconductibility, favorable mechanical nature such as flexibility, large aspect ratios, and simple processability in aqueous media. The applicability MXenes has intensively explored; thus, reviewing relevant research beneficial advancing design high-performance MXene-based shields. Herein, recent progress macrostructure development reviewed, including associated mechanisms. In particular, various structural strategies are highlighted explored. end, difficulties views future growth shields proposed. This review aims drive macrostructures on basis rational high-efficiency utilization MXene.

Language: Английский

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Anion Exchange of Metal Particles on Carbon‐Based Skeletons for Promoting Dielectric Equilibrium and High‐Efficiency Electromagnetic Wave Absorption

Small, Journal Year: 2023, Volume and Issue: 19(42)

Published: June 20, 2023

The combination of carbon materials and magnetic elements is considered as an effective strategy to obtain high-performance electromagnetic wave (EMW) absorption materials. However, using nanoscale regulation the optimization composite material dielectric properties enhanced loss facing significant challenges. Here, constant capability skeleton loaded with Cr compound particles are further tuned enhance EMW performance. After 700 °C thermal resuscitation Cr3-polyvinyl pyrrolidone material, chromium represented a needle-shaped structure nanoparticles, which fixed on derived from polymer. size-optimized CrN@PC composites obtained after substitution more electronegative nitrogen anion-exchange strategy. minimum reflection value -105.9 dB at CrN particle size 5 nm, bandwidth 7.68 GHz (complete Ku-band coverage) 3.0 mm. This work overcomes limitations impedance matching imbalance deficiency in carbon-based through tuning, opens new way ultra-high attenuation capability.

Language: Английский

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Heterostructure design of hydrangea-like Co2P/Ni2P@C multilayered hollow microspheres for high-efficiency microwave absorption

Journal of Material Science and Technology, Journal Year: 2023, Volume and Issue: 181, P. 104 - 114

Published: Oct. 30, 2023

Language: Английский

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From “100%” Utilization of MAX/MXene to Direct Engineering of Wearable, Multifunctional E‐Textiles in Extreme Environments

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(41)

Published: Aug. 24, 2023

Abstract Transition metal carbides/nitrides (MXenes) show great potential for preparing wearable, flexible multifunctional e‐textiles due to the exceptional electrical and mechanical properties easy processing in aqueous medium. At present, MXene‐based face challenges including high production costs, low utilization of precursor titanium aluminum carbide (MAX), poor durability extreme environments, inability achieve a balance between large‐scale fabrication performance. Here, this work proposes “100%” MAX/MXene strategy produce additive‐free conductive inks with controllable viscosity, subsequently enabling an accessible, scalable direct‐blade‐coating followed by chemical cross‐linking approach creating high‐performance, that perform conditions. The structural design provides integrated multifunctionality involving electromagnetic interference (EMI) shielding within ultrabroadband frequency range, visual electrothermal conversion, deicing, remarkable photothermal, antibacterial This employs process is simple, cost‐effective, scalable, presenting novel “100% efficiency” “waste‐to‐wealth” manufacture robust, durable, e‐textiles. exciting next generation wearable electronics, EMI compatibility, heating, thermotherapy, treatments, defense, aerospace applications.

Language: Английский

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Graphene‑Assisted Assembly of Electrically and Magnetically Conductive Ceramic Nanofibrous Aerogels Enable Multifunctionality

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(22)

Published: Feb. 7, 2024

Abstract Ceramic aerogels are gaining increasing attention due to their low density, high‐temperature resistance, and excellent chemical stability. However, conventional ceramic hindered by intrinsic brittleness limited dielectric properties, which restrict scalable manufacturing multifunctional applications. Here, ultralight, biomimetic porous, electrically magnetically conductive nanofibrous composed of silicon dioxide (SiO 2 ) nanofibers, graphene, metal–organic framework (MOF) derivatives prepared through an ice‐templating freeze‐casting followed annealing approach. The renewable SiO nanofibers form robust bonding points with constructing interconnected high‐porosity good mechanical resilience. This allows for efficient integration MOF‐derived magnetic nanoparticles associated a synergistic enhancement. synergies the components, combined uniformly arranged sheet‐like cell walls facilitate outstanding electromagnetic wave absorption performance. Moreover, hydrophobic showcase magnetothermal conversion, contributing application in wireless therapy, antibacterial, deicing. Furthermore, exhibit thermal stability insulation rendering them highly suitable management devices extreme conditions. With renewable, convenient, method, these thus hold great promise protection, heating, next‐generation devices.

Language: Английский

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Tough, stretchable dual-network liquid metal-based hydrogel toward high-performance intelligent on-off electromagnetic interference shielding, human motion detection and self-powered application

Nano Energy, Journal Year: 2023, Volume and Issue: 114, P. 108678 - 108678

Published: July 8, 2023

Language: Английский

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A Liquid‐Metal‐Assisted Competitive Galvanic Reaction Strategy Toward Indium/Oxide Core−Shell Nanoparticles with Enhanced Microwave Absorption

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(18)

Published: Jan. 14, 2024

Abstract The preparation of core–shell structured nanoparticles using the galvanic replacement reaction liquid metals is a simple and efficient method. However, precise modulation core shell components to regulate microwave absorption performance still needs be further explored. In this study, various types indium/oxide are prepared based on competitive gallium‐indium metals. exhibit superior electromagnetic (EM) wave properties with minimum reflection loss (RL) −40.25 dB at 1.7 mm widest effective band 6.12 GHz 2.1 mm. wave‐absorbing originate from dielectric losses interfacial dipole polarizations. addition, an externally applied magnetic field improves polarization dissipation achieve RL −45.65 2.4 liquid‐metal‐assisted strategies extend variety for applications.

Language: Английский

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