文章信息/Info

Title:

Research on Acoustic Metasurface and Its Acoustic Wave Control Characteristics

文章編號:

1674-3962(2021)01-0048-09

作者:

楚楊陽1; 王兆宏2; 蔡成欣3

（1. 鄭州輕工業大學軟件學院，河南 鄭州 450001）（2. 西安交通大學電子科學與工程學院 電子物理與器件教育部重點實驗室，陜西 西安 710049）（3. 河南工業大學信息科學與工程學院 糧食信息處理與控制教育部重點實驗室，河南 鄭州 450001）

Author(s):

CHU Yangyang1; WANG Zhaohong2; CAI Chengxin3

(1. College of Software Engineering，Zhengzhou University of Light Industry, Zhengzhou 450001, China) (2. Key Laboratory for Physical Electronics and Devices of the Ministry of Education, School of Electronic and Information Engineering, Xi�餫n Jiaotong University, Xi�餫n 710049, China) (3. Key Laboratory of Grain Information Processing and Control of the Ministry of Education, College of Information Science and Engineering, Henan University of Technology, Zhengzhou 450001, China)

關鍵詞:

聲學超表面; 折疊空間型超表面; 五模式超表面; 非結構化超表面; 聲波調控

Keywords:

acoustic metasurface;  folded space metasurfaces;  pentamode metasurface;  unstructured metasurface;  acoustic wave regulation

分類號:

O429

DOI:

10.7502/j.issn.1674-3962.202007020

文獻標志碼:

A

摘要:

聲學超材料作為近年來研究的一個新興領域，極大地拓寬了聲學材料在各個領域的應用，聲學超表面作為聲學超材料的一個分支，近幾年也受到了國內外研究者的廣泛關注。聲學超表面是一種由超材料結構單元陣列構成的基于亞波長尺寸的新型聲學超材料，能夠利用廣義Snell定理實現對反射聲波或透射聲波的定向調控，具有利用亞波長厚度調控聲波的獨特優勢。由于其具有結構簡單、物理特性豐富獨特、對聲波靈活有效調控等特點，成為了超材料研究中的熱點課題。從超表面的概念出發，以折疊空間型超表面、五模式超表面、非結構化超表面為基礎，詳細介紹了幾種常見結構單元的設計方法，及其對聲波調控的物理機制，實現諸如負折射、聲聚焦及聲非對稱傳輸等功能。此外，簡略探討了聲學超表面有待解決的問題，以期為后續研究提供參考。

Abstract:

Acoustic metamaterials as an emerging field of research in recent years, have greatly expanded the application of acoustic materials in various fields. Acoustic metasurfaces, a branch of acoustic metamaterials, have also received extensive attention from both domestic and foreign researchers. Acoustic metasurface composed of an array of metamaterial structural units based on sub-wavelength dimension is a new type of acoustic metamaterial. It can use the generalized Snell‘s law to achieve certain directional control of reflected or transmitted sound wave, and it has the unique advantage of using sub-wavelength thickness to control sound wave. Due to its simple structure, rich and unique physical characteristics, and flexible, effective control of acoustic wave, it has become a hot topic in the research of metamaterials. This article first introduced the concept of metasurface, then the design method of common structural units and the physical controlling mechanism of acoustic wave to realize negative refraction, sound focusing and asymmetric sound transmission based on folded space metasurface, pentamode metasurface and unstructured metasurface were elaborated in detail. Finally, the future problems related to the acoustic metasurface were discussed briefly, hoping to provide valuable information for the future study.