Harmonization of heterointerface states to enhance built-in electric field effects for electromagnetic wave absorption

Journal of Material Science and Technology, Год журнала: 2025, Номер 229, С. 223 - 234

Опубликована: Фев. 16, 2025

Язык: Английский

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Facile Preparation of GNS/PyC@SiBCN Aerogels with Heterogeneous Interfaces for Broadband and Tunable Electromagnetic Wave Absorption

Materials Today Nano, Год журнала: 2025, Номер unknown, С. 100571 - 100571

Опубликована: Янв. 1, 2025

Язык: Английский

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Controllable Construction of Hollow Ni/NiO@PPy Particles for Broadband and Highly Efficient Microwave Absorption

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 5, 2025

Abstract Microwave‐absorbing materials are widely used in electromagnetic protection and military stealth fields. Hollow structure materials, as efficient microwave absorbing have garnered considerable attention, since they beneficial to multiple reflection enhance the attenuation loss of microwaves. Herein, a strategy is proposed prepare hollow Ni/NiO@PPy particles using water‐soluble template method combined with situ polymerization process. The cuboid constructed Na 2 SO 4 templates then filled into epoxy resin form composite films excellent absorption properties. film under optimal conditions exhibits minimum value −72.14 dB rate more than 99.99% filling content 10 wt.%. By adjusting thickness, an effective bandwidth 15.94 GHz can be achieved, which almost completely covers S, C, X, Ku bands. CST simulation results confirm outstanding radar cross‐section film. Remarkably, ultra‐low 2.5 wt.%, still achieves 99.90%, demonstrating highly content.

Язык: Английский

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3D printed colloidal Aerogels: Principle, Process, Performance, and perspective

Progress in Materials Science, Год журнала: 2025, Номер unknown, С. 101456 - 101456

Опубликована: Фев. 1, 2025

Язык: Английский

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Optimizing the electromagnetic wave attenuation properties of carbon encapsulated FeCoNiCuMnx high entropy alloy nanoparticles

Carbon, Год журнала: 2024, Номер 229, С. 119502 - 119502

Опубликована: Июль 29, 2024

Язык: Английский

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Multi-interface engineering design of nitrogen-doped bamboo-based carbon/Fe/Fe3C composite electromagnetic wave absorber based on honeycomb-ant nest-like structure

Composites Communications, Год журнала: 2024, Номер 51, С. 102040 - 102040

Опубликована: Авг. 17, 2024

Язык: Английский

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Multifunctional Electromagnetic Responsive Porous Materials Synthesized by Freeze Casting: Principles, Progress, and Prospects

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 12, 2024

Abstract Freeze casting is a solidification technique utilized in the fabrication of porous materials. However, freeze process quite complex, and significant challenges remain precisely controlling pore size shape structures. This study aims to investigate customization multifunctional electromagnetic wave (EMW) absorbers with 3D structures via casting. review initially presents fundamental principles underlying examines correlation between internal external factors during preparation porosity. The emerging trends constructing novel intricate macroscopic through are subsequently outlined. Furthermore, this focuses on composites various microstructures low‐dimensional building blocks, their EMW response properties. By regulating influencing mechanisms casting, absorption materials exhibit outstanding advantages such as property manipulation, controllable structure, high porosity, specific surface area, lightweight, flexibility. These features broaden applications shielding, mechanical property, radar stealth, thermal insulation fire prevention, flexible sensors, antifreeze ability, etc. In addition, we discuss prospects high‐performance using techniques.

Язык: Английский

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Enhanced Dielectric Loss Induced by Asymmetrically Coordinated Iron Single‐Atoms with Curved Configurations on Turing‐Like Surfaces for Electromagnetic Wave Absorption

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 15, 2024

Abstract Curved support can significantly change the electronic structure of a metal single‐atom (M‐SA) and thereby fine tune its intrinsic physicochemical properties. However, constructing asymmetrically coordinated M‐SAs on highly curved supports remains challenging. Here, an efficient strategy driven by different thermal decomposition rates two polymers is proposed to create Turing surface with stripes hollow carbon spheres (HCSs) for anchoring Fe‐N 3 S 1 moieties. Experimental theoretical calculation results reveal that asymmetric atoms strain Fe─N bonds induced efficiently break symmetric distribution charge around Fe enhance dielectric loss HCSs, synergistically improving electromagnetic wave absorption property. Remarkably, film constructed ‐anchored HCSs natural rubber exhibits wide effective bandwidth 7.68 GHz at filling ratio 6%. Moreover, also possesses excellent hydrophobicity, frost‐resistant ability, adhesiveness, flexibility, stretchability, heat‐dispersion which expand practical applications into various environments. This work provides insights synergistic effects configurations their properties offers new method preparation multifunctional films.

Язык: Английский

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Differentiated electromagnetic wave absorption enabled by load modulation of cross-dimensional SiC nanostructures

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161364 - 161364

Опубликована: Март 1, 2025

Язык: Английский

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Graphene with multiscale synergistic optimization: achieving superior cross-band electromagnetic wave absorption performance

Journal of Materials Chemistry C, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Multiscale synergy strategies offer promising solutions for future multi-frequency electromagnetic pollution.

Язык: Английский

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