滑模-反射对称界面中的声多模干涉

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-06-18 DOI:10.1063/5.0265329

Yuzhong Zhou, Tian Sang, Bolun Hu, Yueke Wang

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引用次数: 0

摘要

本文提出了一种滑动反射对称声子晶体（PC），两个PC之间的万尼尔中心不匹配导致边缘态的出现。通过对多个GR对称PC接口进行叠加，发现了由于相邻接口之间的耦合而产生的耦合边缘状态（CES）。在有限元模拟的基础上预测了CESs的多模干涉效应，并通过声学实验对其进行了验证。在此基础上，设计了一种基于MMI效应的拓扑边缘状态分频器，并进行了数值模拟和实验验证。我们的研究为诸如滤波器和耦合器等声学器件的设计提供了见解，并可能有助于声信号处理的进步。

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 multi-mode interference in glide-reflection symmetric interfaces

This study presents a glide-reflection (GR) symmetrical phononic crystal (PC), and the mismatch of the Wannier center between two PCs leads to the emergence of edge states. By stacking multiple GR symmetric PC interfaces, the coupled edge states (CES) are found, which originate from the coupling between the adjacent interfaces. The multi-mode interference (MMI) effects of CESs were predicted based on finite element method simulation and confirmed by an acoustic experiment. In a further way, a topological edge state frequency splitter based on MMI effects was designed and demonstrated by both numerical simulations and experiments. Our research provides insights for the design of acoustic devices such as filters and couplers and may contribute to the advancement of acoustic signal processing.

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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.