Alkali and ion exchange co-modulation strategies to design magnetic–dielectric synergistic nano-absorbers for tailoring microwave absorption

Nano Research, Год журнала: 2023, Номер 16(7), С. 8522 - 8532

Опубликована: Июнь 13, 2023

Язык: Английский

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Compositional and Hollow Engineering of Silicon Carbide/Carbon Microspheres as High-Performance Microwave Absorbing Materials with Good Environmental Tolerance

Nano-Micro Letters, Год журнала: 2024, Номер 16(1)

Опубликована: Апрель 2, 2024

Abstract Microwave absorbing materials (MAMs) characterized by high absorption efficiency and good environmental tolerance are highly desirable in practical applications. Both silicon carbide carbon considered as stable MAMs under some rigorous conditions, while their composites still fail to produce satisfactory microwave performance regardless of the improvements compared with individuals. Herein, we have successfully implemented compositional structural engineering fabricate hollow SiC/C microspheres controllable composition. The simultaneous modulation on dielectric properties impedance matching can be easily achieved change composition these composites. formation structure not only favors lightweight feature, but also generates considerable contribution attenuation capacity. With synergistic effect structure, optimized composite exhibits excellent performance, whose strongest reflection loss intensity broadest effective reach − 60.8 dB 5.1 GHz, respectively, its actually superior those most previous studies. In addition, stability tests capacity after exposure harsh conditions Radar Cross Section simulation data demonstrate that from optimization a bright prospect

Язык: Английский

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Metal organic frameworks derived NixSey@NC hollow microspheres with modifiable composition and broadband microwave attenuation

Carbon, Год журнала: 2024, Номер 226, С. 119215 - 119215

Опубликована: Май 4, 2024

Язык: Английский

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Polydopamine-derived nitrogen-doped carbon coupled with MoSe2 nanosheets composites toward high-efficiency electromagnetic wave absorption

Carbon, Год журнала: 2024, Номер 225, С. 119119 - 119119

Опубликована: Апрель 8, 2024

Язык: Английский

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A “Win–Win” Strategy to Modify Co/C Foam with Carbon Microspheres for Enhanced Dielectric Loss and Microwave Absorption Characteristics

Small, Год журнала: 2023, Номер 19(48)

Опубликована: Авг. 1, 2023

3D carbon foams have demonstrated their superiority in the field of microwave absorption recently, but preparation processes traditional graphene are complicated, while some novel usually suffer from inadequate dielectric property. Herein, a simple "win-win" strategy is to synchronously realize construction Co/C foam and its surface decoration with microspheres. Therein, host guest microspheres interact each other, resulting improvement dispersity Co nanoparticles. The bilaterally synergistic effect can effectively enhance interfacial polarization conductive loss these obtained samples. Electromagnetic analysis reveals that optimized sample moderate microsphere content (about 33.5 wt%) displays widened maximum effective bandwidth 5.2 GHz consolidated reflection intensity -67.6 dB. Besides, enhancement mechanisms investigated discussed detail. It believed this work provides valuable ideas for development 3D-foam-based absorbing materials practical applications.

Язык: Английский

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Constructing gradient reflection and scattering porous framework in composite aerogels for enhanced microwave absorption

Carbohydrate Polymers, Год журнала: 2024, Номер 329, С. 121777 - 121777

Опубликована: Янв. 9, 2024

Язык: Английский

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Controllable fiberization engineering of cobalt anchored mesoporous hollow carbon spheres for positive feedback to electromagnetic wave absorption

Carbon, Год журнала: 2024, Номер 228, С. 119339 - 119339

Опубликована: Июнь 13, 2024

Язык: Английский

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Construction of CoO/Co9S8/NC composites with low-frequency and broadband electromagnetic wave absorption

Carbon, Год журнала: 2024, Номер 228, С. 119338 - 119338

Опубликована: Июнь 13, 2024

Язык: Английский

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Insights into Civilian Electromagnetic Absorption Materials: Challenges and Innovative Solutions

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Фев. 5, 2024

Abstract The emergence and widespread adoption of fifth‐generation wireless technology in civilian sectors have advanced the information revolution, while simultaneously leading to a variety negative impacts. Foremost issues domain include electromagnetic (EM) pollution, interference, inefficient use EM energy. Despite growing global awareness, progress devising effective solutions is sluggish, underlining complexity these issues. delay addressing concerns arises from several factors, including considerable gap comprehensive understanding absence unified stance on critical Moreover, new challenges like interference energy inefficiency indicates clear need for innovative ideas approaches. Addressing extends beyond inherent properties absorbers, requiring combination tailored macro‐structural designs external field management solution. This situation emphasizes urgent diverse strategies creative thinking navigate posed by perspective underscores identified systematically proposes practical approaches each, aiming foster both conversation action this crucial area. insights provided are expected substantially aid confronting alleviating pressing concerns.

Язык: Английский

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Metal–phenolic coordination crystals derived magnetic hollow carbon spheres for ultrahigh electromagnetic wave absorption

Nano Research, Год журнала: 2023, Номер 17(3), С. 1616 - 1624

Опубликована: Сен. 30, 2023

Язык: Английский

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