Preparation of cellulose derived carbon/reduced graphene oxide composite aerogels for broadband and efficient microwave dissipation

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 675, С. 401 - 410

Опубликована: Июль 5, 2024

Язык: Английский

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Enhanced electromagnetic wave absorption of bacterial cellulose/ reduced graphene oxide aerogel by eco-friendly in-situ construction

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 678, С. 648 - 655

Опубликована: Авг. 26, 2024

Язык: Английский

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Mechanically Robust and Thermal Insulating Nanofiber Elastomer for Hydrophobic, Corrosion‐Resistant, and Flexible Multifunctional Electromagnetic Wave Absorbers

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 7, 2024

Abstract Multifunctionalization of electromagnetic wave absorbing materials (EMWAMs) presents a promising avenue for their application in complex scenarios. However, the effective integration multiple supplementary functions into EMWAMs continues to pose significant challenge. Herein, novel nanofiber elastomer (NFE) incorporating multicomponent inorganic FeS 2 /S,N co‐doped carbon nanofibers (NFs) and organic component (Ecoflex) are designed synthesized. The sulfur doping ratios species can be effectively modulated via controlling amount sulfurization temperature. optimized NFs/Ecoflex NFE not only exerted an excellent impedance matching characteristic, but also displays boosted conductive loss polarization capacities. Amongst, achieved ultra‐wide absorption bandwidth (EAB) 7.40 GHz minimum reflection (RL min ) −21.82 dB at thin thickness (≈2.00 mm). Furthermore, simultaneously greatly improved mechanical property, thermal insulation, hydrophobicity, corrosion resistance. Through designing metastructures, with periodically closed‐ring resonant structure realized EAB 32.64 (ranging from 7.36 40.00 GHz). Overall, this research contributes valuable insights design next‐generation satisfactory multifunctionalities, demonstrating potential smart devices challenging environments.

Язык: Английский

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Heterointerface engineering of polymer-based electromagnetic wave absorbing materials

Soft Science, Год журнала: 2025, Номер 5(1)

Опубликована: Янв. 18, 2025

Heterointerface engineering has drawn considerable interest in tuning interfacial polarization and promoting impedance matching. Therefore, it become a key strategy for optimizing electromagnetic wave (EMW) absorption. This comprehensive review primarily focused on the EMW absorbing strategies of polymer-based materials, emphasizing critical developments heterointerface engineering. A possible mechanism materials was proposed, synergism multi-components, microstructure design, Key innovations structural design such as porous structure, multilayered segregated structure are explored, highlighting their contributions to enhancing Also, highlights latest research progress advanced conductive insulating with desirable absorption performance; fabrication methods, structures, properties, mechanisms were elucidated detail. challenges presented followed by some future perspectives.

Язык: Английский

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Carbon-enriched PDC-SiC with enhanced electromagnetic wave absorption: A study examining the impact of branched molecular chains in precursor

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160189 - 160189

Опубликована: Фев. 1, 2025

Язык: Английский

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In Situ Synthesis of Heterostructured Fe–Ni Nanowires with Tunable Electromagnetic Wave Absorption Capabilities

ACS Applied Nano Materials, Год журнала: 2023, Номер 6(15), С. 14322 - 14331

Опубликована: Июль 25, 2023

One-dimensional iron–nickel (Fe–Ni) heterogeneous nanowires with superior electromagnetic wave (EMW) absorption were successfully prepared by a magnetic-field-assisted liquid-phase reduction method. The properties of the absorber controllably tuned changing atomic molar ratio Fe to Ni. composite an Fe:Ni 1:1.5 exhibited finest EMW characteristics. With matched thickness 2.175 mm, minimum reflection loss (RLmin) at 18 GHz can be as high 26.106 dB. Also, majority Ku-band is covered effective bandwidth (EAB, RL ≤ −10 dB), which up 6.08 2.6 mm filler content 25%. excellent performance due one's own rich interface conciliate dielectric and magnetic losses. successful exploration one-dimensional structure provides important insights for future sensible fabrication absorbers capability.

Язык: Английский

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Vat photopolymerization 3D printing SiBCN ceramic metamaterials with strong electromagnetic wave absorption

Additive manufacturing, Год журнала: 2024, Номер 87, С. 104239 - 104239

Опубликована: Май 1, 2024

Язык: Английский

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Design of broadband metamaterial absorber utilized by flower-shaped unit loaded with lumped-resistor

EPJ Applied Metamaterials, Год журнала: 2024, Номер 11, С. 2 - 2

Опубликована: Янв. 1, 2024

A metamaterial broadband absorber is designed by means of metal pattern and lumped resistance. The optimal structural parameters resistance are scanned in certain steps to determine. maximum absorbing bandwidth can achieve up 8.2 GHz with 3 mm thickness. Subsequently, the angle stability be improved adding vertical through holes. After optimization, further increased 9.1 (8.3–17.4 GHz), effective absorption 3.7 (9.53–13.25 GHz) still achieved when incident 60°. Further analysis reveals that dissipation electromagnetic wave ohmic loss caused resistive element magnetic resonance induced circular current, rather than temperature or other factors. Finally, verify real performance absorber, a 30 cm × sample was fabricated, reflection coefficient tested NRL arch test method. results showed measured return consistent simulation results.

Язык: Английский

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Bimagnetic metal constructed core-shell structure of Fe@Co nanowires for multi-band microwave absorption

Progress in Natural Science Materials International, Год журнала: 2024, Номер 34(2), С. 354 - 361

Опубликована: Апрель 1, 2024

Язык: Английский

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Zirconium carbide modified SiOC composites with porous lamellar structures for broadband microwave absorption and thermal stability

Ceramics International, Год журнала: 2024, Номер 50(20), С. 39243 - 39252

Опубликована: Июль 20, 2024

Язык: Английский

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