基于超薄超表面的声学准直

IF 2.3 4区物理与天体物理 Q3 PHYSICS, APPLIED

Applied Physics Express Pub Date : 2023-11-13 DOI:10.35848/1882-0786/ad0c05

Rui Tian, Hao Zhou, Jie Hu

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引用次数: 0

摘要

如何在小尺度上调制声波一直是一个研究热点。本文设计了一种人造超薄结构，其中心有一系列之字形凹槽，两侧对称，实现了超强定向准直声束。仿真结果与理论分析吻合较好，表明声准直结构在光束长度超过40波长的谐振频率处具有较高的指向性。该结构具有较深的亚波长尺度和简单的设计，有望在定向声辐射、医用超声检测等领域得到应用

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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Acoustic collimation based on an ultra-thin metasurface

Abstract How to modulate the acoustic waves at small scales has been an area of intense investigation. In this paper, an artificial ultrathin structure with a series of zigzag-shaped grooves located in the center and bilateral symmetry is designed to realize ultra-strong directional collimated acoustic beams. The simulations agree well with the theoretical analysis and show that the acoustic collimated structure has high directivity at the resonant frequency with the beam length exceeding 40 wavelengths. The structure has deep subwavelength scales and simple design, which are expected to have applications in fields like directional acoustic radiation, medical ultrasound detection, et

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来源期刊

Applied Physics Express 物理-物理：应用

CiteScore

4.80

自引率

8.70%

发文量

310

审稿时长

1.2 months

期刊介绍： Applied Physics Express (APEX) is a letters journal devoted solely to rapid dissemination of up-to-date and concise reports on new findings in applied physics. The motto of APEX is high scientific quality and prompt publication. APEX is a sister journal of the Japanese Journal of Applied Physics (JJAP) and is published by IOP Publishing Ltd on behalf of the Japan Society of Applied Physics (JSAP).