Green Strategy for a Large-Format, Superhard, and Insulated Electromagnetic Wave Absorber Inspired by a Natural Feature of a Conch Shell

ACS Nano, Год журнала: 2024, Номер 18(43), С. 29457 - 29468

Опубликована: Окт. 18, 2024

Due to the intensification of electromagnetic pollution and energy shortages, there is an urgent need for multifunctional composites that can absorb waves provide insulation. However, developing low-cost wave-absorbing are lightweight, high strength, heat-insulating, large-format special environments remains challenging. Inspired by conch shell, this article proposes a green strategy hydration recrystallization self-assembly. Highly biologically active hydroxyapatite (HAP) was used lock in free water prevent porous carbon fibers from absorbing large amount water. Meanwhile, HAP underwent ion exchange recombined with hydrated crystals magnesium oxychloride form gelatinous HAP-5 phase crystal. The cementitious crystal interwoven interlocked support skeleton metal Ni powder shell (Bio-CSC) multiple interfaces via electrostatic adsorption complexation. This utilized inorganic substances as bridges uniformly disperse conductive materials such construct network enriched interface polarization. prepared Bio-CSC composed heterogeneous lightweight specific strength increase 300%. It also provided excellent thermal insulation wave absorption. Its conductivity 0.071 W·m-1·k-1, lowest RLmin value -21.88 dB, matching thickness only 1.2 mm. study overcame limitations traditional absorption magnetism single function may be fields building conservation safety.

Язык: Английский

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Electrically Insulating Electromagnetic Interference Shielding Materials: A Perspective

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Июль 17, 2024

Abstract Electromagnetic interference (EMI) shielding is critical in electronic applications. Over the past decades, numerous high‐performance EMI shields are developed using electrically conducting materials. However, from an application aspect, materials, integral to increasingly complex systems, often need be insulating prevent short‐circuiting and enhance overall reliability flexibility. This requirement has frequently been overlooked earlier research on paper summarizes representative advancements design of innovative materials that minimize eliminate reliance electrical conductivity. Insights into future prospects directions for development also provided, with aim pioneering both intrinsically effective at shielding.

Язык: Английский

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Subwavelength-scale graphene aerogel powders for efficient microwave absorption composites with improved mechanical strength

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 159118 - 159118

Опубликована: Дек. 1, 2024

Язык: Английский

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Charge-transfer States Disclosed by First-Principles Calculations in Core-Shell Carbon Fiber@Ni and Exploration of Its Microscopic Electromagnetic Loss Mechanism

Carbon, Год журнала: 2024, Номер unknown, С. 119931 - 119931

Опубликована: Дек. 1, 2024

Язык: Английский

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Heterogeneous Interface Engineering of 1D Hybrid Nanobelts Decorated with Mo₂N–Mo_xC Nanoparticles for Boosting Microwave Absorption

ACS Applied Nano Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 23, 2025

Язык: Английский

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3D-printed sodium alginate/carbon nanotube/graphene porous scaffolds crosslinked with Ca2+ for high-performance electromagnetic shielding and Joule heating

Carbohydrate Polymers, Год журнала: 2024, Номер 352, С. 123204 - 123204

Опубликована: Дек. 30, 2024

Язык: Английский

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