Enhancement and concealment of broadband acoustic transmission through the coupling of monopole resonances in meta-structures

IF 2.3 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Physics Letters A Pub Date : 2025-02-14 DOI:10.1016/j.physleta.2025.130349

Yunzhong Lei, Jiu Hui Wu, Tengyue Zheng, Shaokun Yang

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引用次数: 0

Abstract

Broadband acoustic transmission enhancement is crucial in practical applications. Here, we propose a meta-structure composed of a central cavity, a middle cavity, eight zigzag channels and eight straight channels, which can improve the acoustic emission and reception efficiency in the broadband range by coupling the first and second monopole resonances, respectively. An acoustic transmission system is constructed by placing the meta-structures at the emitting and receiving end. After parameter optimization, simulation and experiments show that the system achieves an efficiently enhanced broadband acoustic transmission through the cascade process of broadband emission and reception enhancement with a maximum sound pressure level (SPL) gain of 36.5 dB and a -3 dB bandwidth of 797Hz-1187Hz. Furthermore, while maintaining the same SPL at the receiving end, the system can reduce the SPL in other areas by 20 dB to achieve acoustic concealed transmission. The proposed system shows significant potential in acoustic communication.

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来源期刊

Physics Letters A 物理-物理：综合

CiteScore

5.10

自引率

3.80%

发文量

493

审稿时长

30 days

期刊介绍： Physics Letters A offers an exciting publication outlet for novel and frontier physics. It encourages the submission of new research on: condensed matter physics, theoretical physics, nonlinear science, statistical physics, mathematical and computational physics, general and cross-disciplinary physics (including foundations), atomic, molecular and cluster physics, plasma and fluid physics, optical physics, biological physics and nanoscience. No articles on High Energy and Nuclear Physics are published in Physics Letters A. The journal''s high standard and wide dissemination ensures a broad readership amongst the physics community. Rapid publication times and flexible length restrictions give Physics Letters A the edge over other journals in the field.