基于石墨烯-二氧化硅超表面的光学透明、宽带和全向微波吸收器。

IF 3.2 2区物理与天体物理 Q2 OPTICS

Optics express Pub Date : 2024-11-04 DOI:10.1364/OE.538840

Hoyeong Kwon, Giuseppe D'Aguanno, Andrea Alù

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引用次数: 0

摘要

在各种技术中，如隐身、高质量无线通信、航天器屏蔽等，都需要对电磁波进行宽带和全向吸收。在本研究中，我们对一种基于石墨烯的吸收器进行了理论和数值研究，该吸收器可实现 4 GHz 至 100 GHz、0 ∘ 至 50 ∼ 70 ∘ 的宽带全向吸收，吸收效率超过 90%。通过在二氧化硅蛾眼结构上涂覆一层薄薄的石墨烯，我们发现石墨烯层能有效吸收电磁波，而且该结构具有光学透明性，非常适合民用和军事应用。

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Optically transparent, broadband and omnidirectional microwave absorber based on graphene-SiO₂ metasurfaces.

Broadband and omnidirectional absorption of electromagnetic waves is required in various technologies, such as stealth, high quality wireless communications, spacecraft shielding. In this study, we theoretically and numerically study a graphene-based absorber achieving broadband and omnidirectional absorption from 4 GHz to 100 GHz and 0 ^∘ to 50 ^∘∼70 ^∘, with over 90% absorption efficiency. By applying a thin layer of graphene upon a SiO₂ moth-eye structure, we show that electromagnetic waves can be effectively absorbed in the graphene layer and that the structure is optically transparent, ideal for civilian and military applications.

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来源期刊

Optics express 物理-光学

CiteScore

6.60

自引率

15.80%

发文量

5182

审稿时长

2.1 months

期刊介绍： Optics Express is the all-electronic, open access journal for optics providing rapid publication for peer-reviewed articles that emphasize scientific and technology innovations in all aspects of optics and photonics.