One-Dimensional Multicomponent Nanofibers Engineered as Heterostructures for Electromagnetic Stealth Applications

IF 5.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2025-04-26 DOI:10.1016/j.jallcom.2025.180631

Xiyao Wang, Jiao Liu, Xukang Han, Ao Deng, Bowen Han, Yihan Jin, Di Lan, Mingliang Ma, Yang Li

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引用次数: 0

Abstract

The development of advanced antenna systems capable of simultaneously achieving electromagnetic stealth and high-efficiency power transmission is recognized as a critical technological frontier. In this study, the challenge is addressed through the rational design and fabrication of Co/MnO₂/C heterostructured nanofibers, which are prepared via electrospinning followed by controlled carbonization. Through deliberate component selection and meticulous microstructure engineering, impedance matching and attenuation characteristics are synergistically optimized. Exceptional electromagnetic wave (EMW) absorption performance is demonstrated by the resulting architecture, as evidenced by an outstanding minimum reflection loss (RLₘᵢₙ) of -71.88 dB at 7.5 GHz and a broad effective absorption bandwidth (EAB) of 5.3 GHz at an ultrathin thickness of merely 1.57 mm. Superior radar stealth capability is further confirmed through comprehensive radar cross-section (RCS) simulations. More importantly, when employed as a dielectric layer in patch antenna configurations, excellent signal transmission efficiency is maintained by the Co/MnO₂/C nanofibers while effective electromagnetic absorption is simultaneously provided. These findings not only present a high-performance EMW absorber with multifunctional capabilities, but also establish a materials design paradigm that could be utilized to propel the development of next-generation intelligent antenna systems and other advanced electromagnetic devices.

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一维多组分纳米纤维异质结构在电磁隐身中的应用

发展能够同时实现电磁隐身和高效电力传输的先进天线系统被认为是一个关键的技术前沿。在本研究中，通过合理设计和制造Co/MnO2/C异质结构纳米纤维来解决这一挑战，该纳米纤维是通过静电纺丝和可控碳化制备的。通过精心的元器件选择和细致的微结构工程，协同优化阻抗匹配和衰减特性。卓越的电磁波（EMW）吸收性能通过所得到的架构得到了证明，在7.5 GHz时具有-71.88 dB的最小反射损耗（RL l）和5.3 GHz的宽有效吸收带宽（EAB），超薄厚度仅为1.57 mm。通过综合雷达截面（RCS）模拟进一步证实了优越的雷达隐身能力。更重要的是，在贴片天线配置中作为介质层时，Co/MnO2/C纳米纤维在提供有效电磁吸收的同时，保持了良好的信号传输效率。这些发现不仅展示了一种具有多功能的高性能EMW吸收体，而且还建立了一种材料设计范例，可用于推动下一代智能天线系统和其他先进电磁设备的发展。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.