{"title":"通过两个椭圆形反射器将超声波聚焦到薄波导中的超声波换能器","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":8093,"journal":{"name":"Applied Physics Express","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"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\":8093,\"journal\":{\"name\":\"Applied Physics Express\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2024-05-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Physics Express\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.35848/1882-0786/ad4d3c\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Physics Express","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.35848/1882-0786/ad4d3c","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}
An ultrasonic transducer focusing ultrasound into a thin waveguide by two elliptical reflectors
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：
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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