{"title":"Acoustic collimation based on an ultra-thin metasurface","authors":"Rui Tian, Hao Zhou, Jie Hu","doi":"10.35848/1882-0786/ad0c05","DOIUrl":null,"url":null,"abstract":"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","PeriodicalId":8093,"journal":{"name":"Applied Physics Express","volume":"53 4","pages":"0"},"PeriodicalIF":2.3000,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Physics Express","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.35848/1882-0786/ad0c05","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
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
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).
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