Constructing Schottky contacts via vertical growth of SnS2 nanosheets on hollow microspheres for efficient microwave absorption

Journal of Material Science and Technology, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

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Anion Injection in Dielectric Ecosystems to Construct Dual Built‐in Electric Fields for Efficient Electromagnetic Response

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

Published: April 10, 2025

Abstract Constructing built‐in electric fields is a proven method to enhance dielectric loss mechanisms by amplifying interfacial polarization. However, single field often insufficient for significantly improving electromagnetic (EM) polarization loss. To address this, ecosystems are developed utilizing an anion injection strategy regulate work function differences. Through first‐principles calculations, the directional transfer of space charges at multi‐heterogeneous interfaces visualized. The resulting differences spontaneously establish dual (DBIEF) structure, which substantially enhances EM and wave absorption capabilities. Furthermore, equivalent circuit model elucidates competition between conduction species in mechanism. This results exceptional performance, achieving minimum reflection ( RL min ) −58.71 dB effective bandwidth (EAB) 7.92 GHz. Computer simulation technology demonstrates maximum radar cross‐section (RCS) reduction 39.18 dB·m 2 . Additionally, unique hollow‐truncated‐pyramid metamaterial design exhibits high incidence angle insensitivity (60°) over 2–38 GHz, significant broadband across 2–40 comprehensive offers novel insights into structural nanomaterials introduces new ecosystem elucidate DBIEF mechanism efficient absorption.

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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Enhanced microwave absorption properties and anti-oxidation performance of carbonyl iron/zinc oxide compound absorbent

Journal of Materials Science Materials in Electronics, Journal Year: 2025, Volume and Issue: 36(12)

Published: April 1, 2025

Language: Английский

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