Adjustable Phase-Amplitude-Phase Acoustic Metasurface for the Implementation of Arbitrary Impedance Matrices.

IF 11 1区综合性期刊 Q1 Multidisciplinary

Research Pub Date : 2024-10-08 eCollection Date: 2024-01-01 DOI:10.34133/research.0502

Yu-Ze Tian, Zhuo-Run Wei, Yan-Feng Wang, Vincent Laude, Yue-Sheng Wang

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引用次数: 0

Abstract

Impedance metasurfaces enable accurate regulation of acoustic fields. However, they can hardly supply a flexible response as such perfect operation is accompanied by stringent requirements on the design of unit cells. Actually, an arbitrary lossless and passive target impedance matrix requires the tuning of 3 independent real parameters. The set composed of a reflection phase, a transmission amplitude, and a transmission phase, enables the representation of an arbitrary impedance matrix, possibly possessing singular elements. In this paper, a mechanism of phase-amplitude-phase modulation (PAP modulation) is developed for the generic design of the unit cells of acoustic impedance metasurfaces. Adjustable acoustic impedance metasurfaces are further available under this framework. An impedance unit with 3 mobile parts is designed based on this idea. The assembled metasurface can handle different incidences for acoustic field manipulation at a given frequency. Beam steering and beam splitting are considered as demonstration examples and are verified by numerical simulation and experiment. PAP modulation enriches the design of acoustic impedance metasurfaces and extends the range of application of impedance theory.

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用于实现任意阻抗矩阵的可调相位-振幅-相位声学元表面。

阻抗元表面能够精确调节声场。然而，它们很难提供灵活的响应，因为这种完美的操作对单元单元的设计有严格的要求。实际上，一个任意的无损和被动目标阻抗矩阵需要调整 3 个独立的实际参数。由反射相位、传输振幅和传输相位组成的集合可以表示可能具有奇异元素的任意阻抗矩阵。本文开发了一种相位-振幅-相位调制（PAP 调制）机制，用于声阻抗元表面单元格的通用设计。在这一框架下，可调节的声阻抗元表面也将进一步问世。基于这一理念，我们设计了一个由 3 个移动部件组成的阻抗单元。组装后的元表面可在给定频率下处理不同的声场操纵事件。波束转向和波束分裂被视为演示示例，并通过数值模拟和实验进行了验证。PAP 调制丰富了声阻抗元表面的设计，扩大了阻抗理论的应用范围。

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

Research Multidisciplinary-Multidisciplinary

CiteScore

13.40

自引率

3.60%

发文量

审稿时长

14 weeks

期刊介绍： Research serves as a global platform for academic exchange, collaboration, and technological advancements. This journal welcomes high-quality research contributions from any domain, with open arms to authors from around the globe. Comprising fundamental research in the life and physical sciences, Research also highlights significant findings and issues in engineering and applied science. The journal proudly features original research articles, reviews, perspectives, and editorials, fostering a diverse and dynamic scholarly environment.