基于Fe3O4-Doped激光诱导的石墨烯的灵活的元材料吸收器,具有可调节的吸收带
Chunhui Chen1,2, Siyi Bi1, Yu Bai3
1Engineering Research Center of Technical Textile, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China.
ACS applied materials & interfaces
|April 2, 2025
概括
使用Fe3O4合激光诱导的石墨烯的柔性元材料吸收器提供可调节的多频段电磁波吸收. 这些吸收器在雷达和通信应用中表现出卓越的性能和耐腐蚀性.
科学领域:
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
- 纳米技术纳米技术
背景情况:
- 电磁波 (EMW) 对雷达和通信系统至关重要.
- 高效,多频EMW吸收器的需求很高.
- 现有的吸收器往往缺乏灵活性或多频段功能.
研究的目的:
- 开发灵活,大规模的超材料吸收器 (MAs),具有可调的多频段吸收.
- 为了研究Fe3O4合激光诱导的石墨烯 (LIG/Fe3O4) MAs的吸收机制.
- 评估LIG/Fe3O4 MAs在吸收,耐腐蚀性和雷达截面减小方面的性能.
主要方法:
- 使用Fe3O4合激光诱导的石墨烯 (LIG/Fe3O4) 大规模制造柔性MA.
- 在制造过程中通过控制化铁度和激光路径来调整吸收带.
- 使用不同频率的S11值来描述吸收性能.
- 对介电和磁性损失机制的评估.
- 评估耐腐蚀性和雷达横截面的减少.
主要成果:
- LIG/Fe3O4 MA 显示出三频吸收,S11 值更高:在 9.0 GHz 时 -15.0 dB,在 12.2 GHz 时 -40.7 dB,在 16.8 GHz 时 -23.2 dB.
- 吸收归因于来自亚波长LIG/Fe3O4单位的协同介电和磁性损失.
- 马斯表现出良好的耐腐蚀性.
- 观察到有效的雷达截面减小能力.
结论:
- 用Fe3O4合的LIG MAs是有效的灵活,可调节的多频段吸收器.
- 协同作用的介电和磁损失机制有助于高吸收效率.
- 这些MA显示了电磁保护应用的巨大潜力,包括雷达和通信系统.
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