Tuned decoration of GO by FeCu bimetallic nanoparticles for wideband microwave absorption and reduced radar cross section

IF 2.8 3区物理与天体物理 Q2 PHYSICS, CONDENSED MATTER

Physica B-condensed Matter Pub Date : 2025-09-25 DOI:10.1016/j.physb.2025.417852

Fahimeh Zare-Nazari, Mahdieh Dehghani-Dashtabi, Masoud Mohebbi, Hoda Hekmatara

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引用次数: 0

Abstract

FeCu bimetallic NPs were synthesized and then, decorated the GO sheets by tunned weight ratios of (2:1) and (3:1). FeCu/GO (2:1) & (3:1) nanocomposites exhibited excellent microwave absorption, attributed to synergy of polarization loss (surface polarization and dipole) and multiple magnetic resonance. The FeCu/GO (2:1) exhibited a minimum reflection loss of −82.83 dB at a frequency of 8.32 GHz, with a thickness of 3 mm. Moreover, the broadest absorption bandwidth was observed for FeCu/GO (3:1) at a thickness of 2.6 mm, which covered the entire X and Ku bands. The radar cross section (RCS) and far field calculation showed that by covering a typical perfect electrical conductor (PEC) sphere with FeCu/GO nanocomposites, the RCS and far field reduced 30–50 dB and 20 dB, respectively, in comparison with uncovered PEC. Consequently, the FeCu/GO nanocomposite have been verified as a promising material for advanced microwave absorber in practical application.

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FeCu双金属纳米粒子对氧化石墨烯的调谐修饰，用于宽带微波吸收和减小雷达截面

合成FeCu双金属NPs，并按（2:1）和（3:1）的重量比例对氧化石墨烯片进行修饰。FeCu/GO (2:1) &（3:1）纳米复合材料表现出优异的微波吸收，这归因于极化损失（表面极化和偶极子）和多重磁共振的协同作用。FeCu/GO（2:1）在8.32 GHz频率下的最小反射损耗为−82.83 dB，厚度为3 mm。FeCu/GO的吸收带宽为3:1，厚度为2.6 mm，覆盖了整个X和Ku波段。雷达截面（RCS）和远场计算表明，用FeCu/GO纳米复合材料覆盖典型的完美电导体（PEC）球体，RCS和远场分别比未覆盖的PEC降低了30-50 dB和20 dB。因此，FeCu/GO纳米复合材料在实际应用中被证明是一种很有前途的高级微波吸收材料。

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来源期刊

Physica B-condensed Matter 物理-物理：凝聚态物理

CiteScore

4.90

自引率

7.10%

发文量

703

审稿时长

44 days

期刊介绍： Physica B: Condensed Matter comprises all condensed matter and material physics that involve theoretical, computational and experimental work. Papers should contain further developments and a proper discussion on the physics of experimental or theoretical results in one of the following areas: -Magnetism -Materials physics -Nanostructures and nanomaterials -Optics and optical materials -Quantum materials -Semiconductors -Strongly correlated systems -Superconductivity -Surfaces and interfaces