Novel concept of array transducer element using combined resonance between oscillations of hemispherical piezoceramic shell and bulk water

Kenji Otsu, Shin Yoshizawa, Shinichiro Umemura

研究成果: Conference contribution

抄録

For therapeutic ultrasound array transducers, it is required to reduce the electrical impedance of their elements so that the transducer can produce high ultrasonic power at a relatively low drive voltage. For this purpose, we are investigating a new concept of piezoceramic element using its breathing mode. Numerical simulation showed that a concave hemispherical piezoceramic shell with a diameter on the order of a wavelength in water is effective for obtaining good acoustic matching with water. High acoustical coupling was achieved by utilizing the combined resonance between the breathing-mode oscillation of the piezoceramic shell and the volume oscillation of a water sphere half enclosed by the shell.

本文言語English
ホスト出版物のタイトル2011 IEEE International Ultrasonics Symposium, IUS 2011
ページ2181-2184
ページ数4
DOI
出版ステータスPublished - 2011 12 1
イベント2011 IEEE International Ultrasonics Symposium, IUS 2011 - Orlando, FL, United States
継続期間: 2011 10 182011 10 21

出版物シリーズ

名前IEEE International Ultrasonics Symposium, IUS
ISSN(印刷版)1948-5719
ISSN(電子版)1948-5727

Other

Other2011 IEEE International Ultrasonics Symposium, IUS 2011
国/地域United States
CityOrlando, FL
Period11/10/1811/10/21

ASJC Scopus subject areas

  • 音響学および超音波学

フィンガープリント

「Novel concept of array transducer element using combined resonance between oscillations of hemispherical piezoceramic shell and bulk water」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル