Broadband multispectral compatible absorbers for radar, infrared and visible stealth application

Progress in Materials Science, Год журнала: 2023, Номер 135, С. 101088 - 101088

Опубликована: Фев. 4, 2023

Язык: Английский

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Achieving Ultra-Wideband and Elevated Temperature Electromagnetic Wave Absorption via Constructing Lightweight Porous Rigid Structure

Nano-Micro Letters, Год журнала: 2022, Номер 14(1)

Опубликована: Авг. 23, 2022

Язык: Английский

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Controllable Atomic Migration in Microstructures and Defects for Electromagnetic Wave Absorption Enhancement

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Март 25, 2024

Abstract Defects and microstructures have been utilized to effectively modulate electromagnetic (EM) wave absorption for mitigating pollution stealth issues. However, precisely feasibly tailoring them still remains challenging. Here, by using a multilevel hollow cobalt sulfide embedded in heteroatomic sulfur (S) ‐doped carbon aerogel, preferential reaction strategy of modulating point defects via controllable S atoms migration is proposed improve the EM absorption. contribute creation structures Kirkendall effects, as well inducing lattice through doping. More significantly, mechanisms prioritizing formation over discovered, with low‐velocity atomic primarily microstructure interfacial polarization impedance matching, high‐velocity atom focused on introducing achieve conductive loss. The resulting aerogel exhibits an exceptionally maximum reflection loss −52.82 dB effective bandwidth 8.82 GHz, which far exceeds most currently reported materials. Experimental theoretical approaches, including microwave heating, Tesla interaction, first principles, far‐field simulation, are comprehensively employed verify its effect mechanism. Furthermore, combination excellent infrared self‐cleaning properties opens up potential applications complex environments.

Язык: Английский

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Progress of metal organic frameworks-based composites in electromagnetic wave absorption

Materials Today Physics, Год журнала: 2022, Номер 30, С. 100950 - 100950

Опубликована: Дек. 20, 2022

Язык: 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, Год журнала: 2023, Номер 181, С. 104 - 114

Опубликована: Окт. 30, 2023

Язык: Английский

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Ultralight aerogel sphere composed of nanocellulose-derived carbon nanofiber and graphene for excellent electromagnetic wave absorption

Nano Research, Год журнала: 2023, Номер 16(5), С. 7931 - 7940

Опубликована: Март 10, 2023

Язык: Английский

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Morphology engineering of defective graphene for microwave absorption

Journal of Colloid and Interface Science, Год журнала: 2023, Номер 640, С. 680 - 687

Опубликована: Март 2, 2023

Язык: Английский

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Integrating Sulfur Doping with a Multi‐Heterointerface Fe₇S₈/NiS@C Composite for Wideband Microwave Absorption

Small, Год журнала: 2024, Номер unknown

Опубликована: Май 7, 2024

Abstract Heterointerface engineering is presently considered a valuable strategy for enhancing the microwave absorption (MA) properties of materials via compositional modification and structural design. In this study, sulfur‐doped multi‐interfacial composite (Fe 7 S 8 /NiS@C) coated with NiFe‐layered double hydroxides (LDHs) successfully prepared using hydrothermal method post‐high‐temperature vulcanization. When assembled into twisted surfaces, NiFe‐LDH nanosheets exhibit porous morphologies, improving impedance matching, scattering. Sulfur doping in composites generates heterointerfaces, numerous sulfur vacancies, lattice defects, which facilitate polarization process to enhance MA. Owing controllable heterointerface design, unique structure induced multiple endowing Fe /NiS@C an enhanced MA capability. particular, minimum reflection loss (RL min ) value reached −58.1 dB at 15.8 GHz thickness 2.1 mm, broad effective bandwidth (EAB) 7.3 achieved 2.5 mm. Therefore, exhibits remarkable potential as high‐efficiency material owing synergistic effects processes, scatterings, structures, matching.

Язык: Английский

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Dimensional Design of Cellulose Aerogels with Schottky Contact for Efficient Microwave Absorption

Small, Год журнала: 2025, Номер unknown

Опубликована: Фев. 5, 2025

Cellulose aerogels, as a novel class of carbon-based materials, exhibit immense potential in the field microwave absorption (MWA) due to their biocompatibility, low density, unique porous structure, and tunable architecture. However, development multi-dimensional components with specialized heterogeneous structures, which are based on cellulose remains significant challenge. This 0D/1D/3D structural configuration facilitates electromagnetic properties favorable impedance matching. The Schottky contact at ZnO/Ni interface, particular, induces strong interfacial polarization, design results multiple heterointerfaces. Density functional theory (DFT) calculations reveal that barrier causes band bending, facilitating directed migration electrons interface formation an internal electric field, thus significantly accelerating multipolar relaxation process. As anticipated, CCMC/ZnO@Ni aerogel exhibits minimum reflection loss (RLmin) value -64.0 dB 13.9 GHz thickness 2.0 mm, its effective bandwidth (EAB) reaches 4.9 GHz. work gives valuable guidance inspiration for materials composed dimensional gradient holds great application wave (EMW) attenuation.

Язык: Английский

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Marine polysaccharide-based electromagnetic absorbing/shielding materials: design principles, structure, and properties

Journal of Materials Chemistry A, Год журнала: 2022, Номер 10(33), С. 17023 - 17052

Опубликована: Янв. 1, 2022

An investigation of design principles, preparation processes and structural properties is carried out to predict the development tendency marine polysaccharide-based electromagnetic response materials which cater current targeted demands.

Язык: Английский

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