Rigorous coupled-wave analysis for the design of ultrasound metasurfaces with soft boundaries

IF 3.4 2区物理与天体物理 Q1 ACOUSTICS

Applied Acoustics Pub Date : 2025-09-03 DOI:10.1016/j.apacoust.2025.111038

Shulong Hong , Xinya Yao , Xiangkun Piao , Yuhang Fan , Cheng Lü , Jiabao Yao , Suhua Luo , Yanbo Pei , Yongyuan Jiang , Bingbing Cheng , Fengfeng Yao

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引用次数: 0

Abstract

Acoustic metasurfaces enable precise wavefront manipulation, yet face significant computational and design challenges in predicting and optimizing their behavior. By utilizing efficient computational methods based on rigorous coupled wave analysis (RCWA), we design and optimize multifocal metasurfaces. Multifocal metasurfaces hold significant potential for medical ultrasound applications. Using a trifocal metasurface as a demonstrative example, we showcase the capabilities of our innovative algorithm in the design and optimization of multifocal metasurfaces. Our methodology integrates RCWA with angular spectrum analysis and genetic algorithms to achieve simultaneous amplitude and phase modulation, enabling arbitrary energy distribution among multiple focal points. Through comprehensive numerical simulations and experimental validation, we demonstrate the feasibility of our design in achieving three-dimensional acoustic intensity control. This work provides a novel solution for advanced medical ultrasound applications, offering substantial improvements in computational efficiency and design flexibility compared to conventional methods.

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软边界超声超表面设计的严格耦合波分析

声学超表面可以实现精确的波前操作，但在预测和优化其行为方面面临着重大的计算和设计挑战。利用基于严格耦合波分析（RCWA）的高效计算方法，设计并优化了多焦点超表面。多焦点超表面在医学超声应用中具有重要的潜力。以三焦超表面为例，我们展示了我们的创新算法在多焦超表面的设计和优化方面的能力。我们的方法将RCWA与角频谱分析和遗传算法相结合，实现同时振幅和相位调制，从而实现多个焦点之间的任意能量分布。通过全面的数值模拟和实验验证，我们证明了我们的设计在实现三维声强控制方面的可行性。这项工作为先进的医学超声应用提供了一种新的解决方案，与传统方法相比，在计算效率和设计灵活性方面提供了实质性的改进。

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 Acoustics 物理-声学

CiteScore

7.40

自引率

11.80%

发文量

618

审稿时长

7.5 months

期刊介绍： Since its launch in 1968, Applied Acoustics has been publishing high quality research papers providing state-of-the-art coverage of research findings for engineers and scientists involved in applications of acoustics in the widest sense. Applied Acoustics looks not only at recent developments in the understanding of acoustics but also at ways of exploiting that understanding. The Journal aims to encourage the exchange of practical experience through publication and in so doing creates a fund of technological information that can be used for solving related problems. The presentation of information in graphical or tabular form is especially encouraged. If a report of a mathematical development is a necessary part of a paper it is important to ensure that it is there only as an integral part of a practical solution to a problem and is supported by data. Applied Acoustics encourages the exchange of practical experience in the following ways: • Complete Papers • Short Technical Notes • Review Articles; and thereby provides a wealth of technological information that can be used to solve related problems. Manuscripts that address all fields of applications of acoustics ranging from medicine and NDT to the environment and buildings are welcome.