{"title":"An ultrasonic transducer focusing ultrasound into a thin waveguide by two elliptical reflectors","authors":"Shoki Ieiri, Kyohei Yamada, T. Sasamura, Shinsuke Itoh, Takashi Kasashima, Takeshi Morita","doi":"10.35848/1882-0786/ad4d3c","DOIUrl":null,"url":null,"abstract":"\n A high-power ultrasonic transducer operating on a unique principle for minimally invasive treatments is proposed, capable of treating areas inaccessible by HIFU treatments. This transducer employs two elliptical reflectors that efficiently focus ultrasound waves into a thin waveguide by utilizing mode conversion. Additionally, a slit structure is introduced to suppress wave diffraction, further enhancing the focusing capabilities of the transducer. Finite element analysis demonstrates that the proposed transducer achieves an impressive energy density magnification factor of 325, with an energy efficiency of 24.2%. This efficiency is 3.4 times higher than that of a conventional transducer, DPLUS.","PeriodicalId":2,"journal":{"name":"ACS Applied Bio Materials","volume":"73 20","pages":""},"PeriodicalIF":4.7000,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Bio Materials","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.35848/1882-0786/ad4d3c","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, BIOMATERIALS","Score":null,"Total":0}
引用次数: 0
Abstract
A high-power ultrasonic transducer operating on a unique principle for minimally invasive treatments is proposed, capable of treating areas inaccessible by HIFU treatments. This transducer employs two elliptical reflectors that efficiently focus ultrasound waves into a thin waveguide by utilizing mode conversion. Additionally, a slit structure is introduced to suppress wave diffraction, further enhancing the focusing capabilities of the transducer. Finite element analysis demonstrates that the proposed transducer achieves an impressive energy density magnification factor of 325, with an energy efficiency of 24.2%. This efficiency is 3.4 times higher than that of a conventional transducer, DPLUS.
期刊介绍：
ACS Applied Bio Materials is an interdisciplinary journal publishing original research covering all aspects of biomaterials and biointerfaces including and beyond the traditional biosensing, biomedical and therapeutic applications.
The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important bio applications. The journal is specifically interested in work that addresses the relationship between structure and function and assesses the stability and degradation of materials under relevant environmental and biological conditions.
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