Engineering Structural Anisotropy for Visualizing and Controlling Nanomagnetic Interactions with High‐Frequency Electromagnetic Wave

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 11, 2025

Abstract Structural anisotropy in micro‐ and nanoscale magnetic materials is critical for their response to high‐frequency electromagnetic (EM) fields. However, controlling visualizing these properties at the remains a significant challenge. In this study, it proposes strategy directional regulation of iron‐based materials. By manipulating particle structures, preferential orientation designs are achieved, resulting spherical, spindle‐shaped, symmetrical hexagonal cone‐shaped, disc‐shaped morphologies. Utilizing off‐axis electron holography micromagnetic simulations, observes that material's EM waves intensifies with increasing structural anisotropy. This enhanced directly influences permeability, enabling effective modulation waves. Building on insights, spindle‐shaped structures developed strong uniaxial anisotropy, achieving microwave absorption surpassing Snoek limit. These exhibit an initial permeability up 2.03, 35% improvement over isotropic structures. They cover 4.58–7.88 GHz range, providing across more than 50% wireless communication band thin coating just 3.0 mm, outperforming existing absorbers. Notably, bands predominantly lie within civilian frequency ranges (2–8 GHz), offering pollution protection 5G future 6G technologies.

Language: Английский

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Aluminum nitride-enhanced spherical-like Fe3O4 nanoparticles decorating reduced graphene oxide hybrid composites with superior microwave absorption performance

Journal of Materials Science Materials in Electronics, Journal Year: 2025, Volume and Issue: 36(5)

Published: Feb. 1, 2025

Language: Английский

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Nanomaterials Unveiled: Catalyzing the Future of Technological Innovation

Published: Jan. 1, 2025

Language: Английский

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The Nanomaterials Era: Advancing Innovation and Technological Frontiers

Published: Jan. 1, 2025

Language: Английский

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Robust and Reprocessable Biorenewable Polyester Nanocomposites In Situ Catalyzed and Reinforced by Dendritic MXene@CNT Heterostructure

Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)

Published: Feb. 24, 2025

Abstract Renewable 2,5-furandicarboxylic acid-based polyesters are one of the most promising materials for achieving plastic replacement in age energy and environmental crisis. However, their properties still cannot compete with those petrochemical-based plastics, owing to insufficient molecular and/or microstructure designs. Herein, we utilize Ti 3 C 2 T x -based MXene nanosheets decorating carbon nanotube (CNT) obtaining structurally stable highly dispersed dendritic hetero-structured MXene@CNT, that can act as multi-roles, i.e., polycondensation catalyst, crystal nucleator, interface enhancer polyester. The bio-based MXene@CNT/polybutylene furandicarboxylate (PBF) (denoted MCP) nanocomposites synthesized by strategy “in situ catalytic polymerization hot-pressing”. Benefiting from multi-scale interactions (i.e., covalent bonds, hydrogen physical interlocks) hybrid structure, MCP presents exceptional mechanical strength (≈101 MPa), stiffness (≈3.1 GPa), toughness (≈130 MJ m −3 ), barrier (e.g., O 0.0187 barrer, CO 0.0264 H 1.57 × 10 −14 g cm −2 s Pa) higher than reported engineering plastics. Moreover, it also displays satisfactory multifunctionality high reprocessability (90% retention after 5 recycling), UV resistance (blocking 85% UVA rays), solvent-resistant properties. As a state-of-art high-performance multifunctional material, novel nanocomposite offers more sustainable alternative plastics packaging material fields. More importantly, our catalysis-interfacial strengthening integration opens door designing constructing polyester future.

Language: Английский

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Nanomaterials Revolution: Paving the Way for Next-Gen Applications

Published: Jan. 1, 2025

Language: Английский

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Analysis of resonant characteristics of microwave actuators at different frequencies

Sensors and Actuators A Physical, Journal Year: 2025, Volume and Issue: unknown, P. 116444 - 116444

Published: March 1, 2025

Language: Английский

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Terminal group engineering of Ti3C2Tx MXene on thermal emitter performance

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: March 12, 2025

Ti3C2Tx MXene has emerged as a promising material for diverse nanophotonics applications. In this study, we investigate how terminal groups (–F, –O–, –OH) influence the performance of planar thermal emitter with VO2/SiO2/Ti3C2Tx structure. By examining four variants across 2–20 µm spectral range, demonstrate that hysteresis loop threshold temperature remains constant all types due to VO2 phase change material. The average differential emissivity (Δε) between semiconductor and metallic states varies significantly group composition. VO2/SiO2/Ti3C2F2 structure exhibits highest Δε = 0.42, while VO2/SiO2/Ti3C2(OH)2 shows lowest 0.33. remaining structures; VO2/SiO2/Ti3C2 VO2/SiO2/Ti3C2O2, intermediate values 0.41 0.38, respectively. These findings establish foundation controlling in applications such energy harvesting, thermophotovoltaics, radiative cooling systems. ability tailor emission through engineering presents opportunities designing tunable photonic devices precise control capabilities next-generation management

Language: Английский

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Smart sensing of materials: Research progress in trace detection of energetic materials

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161372 - 161372

Published: March 1, 2025

Language: Английский

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Simultaneous Manipulation of Multidimensional Heterojunctions and Dielectric Gene Engineering for Broadband Microwave Absorption

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 16, 2025

Abstract Multidimensional heterogeneous interface construction and multicomponent dielectric gene optimization have emerged as viable strategies for the design of high‐performance microwave absorbing materials (MAMs) with broad effective absorption bandwidth (EAB). Herein, V 2 O 3 /VO/C@Ti C T X /TiO composites multidimensional heterostructures are prepared through electrostatic self‐assembly modified MIL‐88B(V) MXene followed by carbonization. A synchronous manipulation genes intensity built‐in electric field (BIEF) is realized tailoring carbonation temperature precursor. The electron transport properties at interfaces precisely modulated several heterojunctions BIEFs. Simultaneously, based on theoretical computational simulations verifications, it found that spontaneous BIEF generated in situ‐constructed can activate Mott–Schottky barrier, balancing fermi energy levels both sides enhancing polarization. Benefiting from modulation system, exhibited an RL –50.10 dB EAB value 6.16 GHz a fill ratio 20%. This work offers rational insights interfaces, ultimately aiding development stealth intended electronic countermeasures.

Language: Английский

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