Magnetic and stackable flexible photonic crystal perfect absorbers

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-07-07 DOI:10.1063/5.0267097

Wenjing Lv, Haoye Qin, Feng Wang, Han Zhang, Jing Guo, Jidong Du, Hongsheng Sun, Qinghua Song, Bo Li

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引用次数: 0

Abstract

The detrimental effects of electromagnetic pollution on wireless communication and potential health risks necessitate the development of efficient mitigation strategies. However, traditional absorbing materials and existing metamaterial absorbers face limitations in terms of cost, complexity, and tunability. In this study, we propose an improved design for a highly efficient and tunable metamaterial absorber called a photonic crystal (PhC) absorber. It involves a membrane with periodic holes in a square pattern, with carbon iron powder as the absorbent material and silicone as the matrix. Radar cross section measurements confirm the PhC absorber's performance, with maximum absorption of 53 dB and a considerably large effective bandwidth. The PhC absorber exhibits magnetic tunability, and a magnetic field shifts the maximum absorption position to higher frequencies and widens the effective bandwidth. Increasing the number of absorber layers in the stackable PhC configuration lowers the resonant frequency and widens the relative bandwidth. With its superior absorption capability, tunability, stackability, flexibility, and feasible fabrication process, the PhC absorber demonstrates considerable potential for various absorbing meta-devices.

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磁性和可堆叠的柔性光子晶体是完美的吸收材料

鉴于电磁污染对无线通信的有害影响和潜在的健康风险，有必要制定有效的缓解战略。然而，传统的吸波材料和现有的超材料吸波材料在成本、复杂性和可调性等方面都存在局限性。在这项研究中，我们提出了一种改进的设计，用于高效率和可调谐的超材料吸收体，称为光子晶体（PhC）吸收体。它包括一层具有方形周期性孔的膜，碳铁粉作为吸收材料，硅树脂作为基体。雷达横截面测量证实了PhC吸收器的性能，最大吸收为53 dB，有效带宽相当大。PhC吸收体具有磁性可调性，磁场使最大吸收位置向更高频率移动，并使有效带宽变宽。在可堆叠的PhC结构中增加吸收层的数量降低了谐振频率并拓宽了相对带宽。PhC吸收剂具有优异的吸收能力、可调性、可堆叠性、灵活性和可行的制造工艺，在各种吸收元器件中表现出相当大的潜力。

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

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.