Mechanisms, design, and fabrication strategies for emerging electromagnetic wave-absorbing materials

Cell Reports Physical Science, Journal Year: 2024, Volume and Issue: 5(7), P. 102097 - 102097

Published: July 1, 2024

The rapid development of intelligent devices imposes new demands on electromagnetic wave (EMW)-absorbing materials, especially concerning wide-spectrum absorption, frequency band manipulation, and multifunctional integration. However, conventional investigations EMW-absorbing materials face several challenges that collectively limit the effectiveness existing amid growing demands, including ambiguous (EM) loss mechanisms, impedance mismatches, deficiencies in integrated design. This review elucidates EM delineates key bridge mechanisms linking microscopic macroscopic factors, proposes dielectric polarization models to clarify mechanisms. Additionally, it delves into unique advantages core-shell structures porous optimization. Finally, introduces fabrication approaches integrate detailing design strategies exploring potential applications. By consolidating these cutting-edge achievements, this aims guide scientific advancement materials.

Language: Английский

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A Perspective of Tailoring Dielectric Genes for 2D Materials Toward Advanced Electromagnetic Functions

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(52)

Published: Aug. 27, 2024

Abstract 2D materials and their composites with electromagnetic properties are becoming increasingly popular. Obtaining insight into the nature of (EM) response manipulation is imperative to guide scientific research technological exploitation at such a critical time. From this perspective, dielectric genes material hybrids have been highlighted based on recent literature. This endows an unlimited possibility manipulating EM response, even elevated temperatures. The definitions criteria toward systematically clarified summarized. gene categories successfully discriminated, including conduction networks, intrinsic defects, impurity interfaces in composite, temperature evolution revealed detail. More importantly, tuning strategies for microwave absorption, shielding effectiveness, expanded functions thoroughly discussed. Finally, significant predictions provided multispectral functions, future applications multifunctional exploration anticipated. Dielectric will open unexpected horizon advanced functional coming 5G/6G age, providing boost promoting environmental protection, devices, next‐generation smart devices.

Language: Английский

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Metal Single‐Atoms Toward Electromagnetic Wave‐Absorbing Materials: Insights and Perspective

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(44)

Published: May 22, 2024

Abstract Metal single‐atoms implanted on nitrogen‐doped carbon matrices (M‐N x Cs) can effectively adjust local surface electrons and polarization relaxation through coordination structures to significantly enhance the electromagnetic wave (EMW) absorption properties of materials. However, precise construction geometric electronic metal single atoms discovery structure‐absorption relationship at atomic level confront a huge challenge. Herein, this work summarizes latest progress in single‐atom engineering EMW absorbing materials via comprehensive analysis M‐N Cs terms design principles, modulation strategies, structure‐performance correlations. Subsequently, it highlights recent several typical as materials, aiming achieve complete understanding physical effects atomic‐level mechanisms. Finally, current key challenge future directions are presented by focusing functional This provides new insights for development atomically dispersed efficient response functionalities.

Language: Английский

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Facile design and enhanced interface polarization of CoFe-PBA/MXene towards microwave absorption, EMI shielding and energy storage

Carbon, Journal Year: 2024, Volume and Issue: 226, P. 119239 - 119239

Published: May 13, 2024

Language: Английский

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LaFe-MOFs derivatives with different compositions for boosting low-frequency and broadband electromagnetic wave absorption

Materials Today Nano, Journal Year: 2024, Volume and Issue: 28, P. 100528 - 100528

Published: Oct. 9, 2024

Language: Английский

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Enhancement of Electromagnetic Wave Attenuation through Polarization Loss Induced by Hybridization of Rare‐Earth 4f and Mo‐4d Orbitals in Liquid Plasma

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

Published: Aug. 5, 2024

Abstract The incorporation of large‐sized rare earth (RE) elements with high coordination characteristics into transition metal dichalcogenide (TMD) absorbers while preserving a 1T phase content during post‐processing poses significant challenge. To address this, novel strategy involving the confinement RE within 1T‐MoS 2 lattice via liquid plasma assistance, is proposed. This approach effectively mitigates environmental impact on MoS , yielding remarkable 82.69% for Ce20‐D7 (20 wt.% Cerium trinitrate and 7 kV applied voltage). Combining experimental theoretical investigations reveals that multi‐orbital facilitate hybridization between RE‐4f Mo‐4d orbitals surface, leading to occupation weakly bound electrons in bonding short‐distance motion, enhanced inter‐orbital electron‐electron interactions, induced polarization loss. Notably, results demonstrate Pr15‐D7 sample (15 praseodymium nitrate voltage) exhibits an effective absorption bandwidth (EAB) 7.12 GHz at 2.6 mm, minimum reflection loss ‐52.02 dB achieves EAB 6.96 2.7 mm. These findings provide valuable insights rational design development high‐performance TMD leveraging RE‐modified materials.

Language: Английский

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Insights into polarization relaxation of electromagnetic wave absorption

Cell Reports Physical Science, Journal Year: 2024, Volume and Issue: 5(9), P. 102206 - 102206

Published: Sept. 1, 2024

Language: Английский

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Reinforcement of microwave absorption and thermal conductivity of polydimethylsiloxane achieved by metal-organic framework-derived carbon nanotube/boron nitride flake heterogeneous structure

Carbon, Journal Year: 2024, Volume and Issue: 227, P. 119242 - 119242

Published: May 13, 2024

Language: Английский

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Synergistic Enhancement of Defect-Induced Polarization and Built-In Electric Field Effect in Carbon Hybrids towards Efficient Electromagnetic Wave Absorption

Carbon, Journal Year: 2025, Volume and Issue: unknown, P. 120037 - 120037

Published: Jan. 1, 2025

Language: Английский

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Functional Carbon Springs Enabled Dynamic Tunable Microwave Absorption and Thermal Insulation

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

Published: Oct. 21, 2024

Abstract Electromagnetic (EM) wave pollution and thermal damage pose serious hazards to delicate instruments. Functional aerogels offer a promising solution by mitigating EM interference isolating heat. However, most of these materials struggle balance protection with microwave absorption (MA) efficiency due previously unidentified conflict between the optimizing strategies two properties. Herein, this study reports involving design carbon‐based aerogel called functional carbon spring (FCS). Its unique long‐range lamellar multi‐arch microstructure enables tunable MA performance excellent insulation capability. Adjusting compression strain from 0% 50%, adjustable effective bandwidth ( EAB ) spans up 13.4 GHz, covering 84% measured frequency spectrum. Notably, at 75% strain, drops 0 demonstrating novel “on‐off” switchability for performance. ultralow vertical conductivity (12.7 mW m −1 K anisotropic heat transfer mechanism endow FCS superior effectiveness. Numerical simulations demonstrate that outperforms common honeycomb structures isotropic porous in management. Furthermore, an “electromagnetic‐thermal” dual‐protection material database is established, which intuitively demonstrates superiority solution. This work contributes advancement multifunctional significant potential practical applications.

Language: Английский

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