Numerical Study of a Miniaturized, 1–3 Piezoelectric Composite Focused Ultrasound Transducer
This study aimed to develop an optimal methodology for the design of a miniaturized, 1–3 piezoelectric composite focused ultrasound transducer. Miniaturized focused ultrasound (FUS) devices, generally guided through catheters, have received considerable attention in the biomedical and ultrasound fie...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/1/615 |
| _version_ | 1827761004169134080 |
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| author | Howuk Kim Xiaoning Jiang |
| author_facet | Howuk Kim Xiaoning Jiang |
| author_sort | Howuk Kim |
| collection | DOAJ |
| description | This study aimed to develop an optimal methodology for the design of a miniaturized, 1–3 piezoelectric composite focused ultrasound transducer. Miniaturized focused ultrasound (FUS) devices, generally guided through catheters, have received considerable attention in the biomedical and ultrasound fields as they can overcome the technical restrictions of typical FUS transducers. However, miniaturized transducers cannot readily generate a high acoustic intensity because of their small aperture sizes and the vibration mode coupling. As such, 1–3 composite transducers, having a high electromechanical coupling and efficient vibration directivity, break through the current technical restrictions. However, the systematic methodology for designing miniaturized FUS transducers has not been thoroughly discussed so far. Therefore, in this study, we designed 1–3 piezoelectric composite transducers using analytical and numerical methods. Specifically, extensive parametric studies were performed through finite element analysis under the coupled field with piezoelectricity, structural vibration, and acoustic pressure. The simulation results confirmed that the optimal design of the 1–3 composite type transducer produces much higher (>160%) acoustic pressure output at the focal point than the single-phase device. Furthermore, the array type of the interstitial transducer was predicted to produce an unprecedented acoustic intensity of approximately 188 W/cm<sup>2</sup> under a short duty cycle (1%). This study will provide valuable technical methodology for the development of interstitial, 1–3 composite FUS transducers and the selection of optimal design parameters. |
| first_indexed | 2024-03-11T10:06:47Z |
| format | Article |
| id | doaj.art-60dd1e3626714004b66c6d7b40ca9144 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T10:06:47Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-60dd1e3626714004b66c6d7b40ca91442023-11-16T14:59:26ZengMDPI AGApplied Sciences2076-34172023-01-0113161510.3390/app13010615Numerical Study of a Miniaturized, 1–3 Piezoelectric Composite Focused Ultrasound TransducerHowuk Kim0Xiaoning Jiang1Department of Mechanical Engineering, Inha University, 100, Inha-ro, Michuhol-gu, Incheon 22212, Republic of KoreaDepartment of Mechanical and Aerospace Engineering, North Carolina State University, Engineering Bldg 3, Raleigh, NC 27695, USAThis study aimed to develop an optimal methodology for the design of a miniaturized, 1–3 piezoelectric composite focused ultrasound transducer. Miniaturized focused ultrasound (FUS) devices, generally guided through catheters, have received considerable attention in the biomedical and ultrasound fields as they can overcome the technical restrictions of typical FUS transducers. However, miniaturized transducers cannot readily generate a high acoustic intensity because of their small aperture sizes and the vibration mode coupling. As such, 1–3 composite transducers, having a high electromechanical coupling and efficient vibration directivity, break through the current technical restrictions. However, the systematic methodology for designing miniaturized FUS transducers has not been thoroughly discussed so far. Therefore, in this study, we designed 1–3 piezoelectric composite transducers using analytical and numerical methods. Specifically, extensive parametric studies were performed through finite element analysis under the coupled field with piezoelectricity, structural vibration, and acoustic pressure. The simulation results confirmed that the optimal design of the 1–3 composite type transducer produces much higher (>160%) acoustic pressure output at the focal point than the single-phase device. Furthermore, the array type of the interstitial transducer was predicted to produce an unprecedented acoustic intensity of approximately 188 W/cm<sup>2</sup> under a short duty cycle (1%). This study will provide valuable technical methodology for the development of interstitial, 1–3 composite FUS transducers and the selection of optimal design parameters.https://www.mdpi.com/2076-3417/13/1/6151–3 compositepiezoelectricfocused ultrasoundminiaturized transducertransducer design |
| spellingShingle | Howuk Kim Xiaoning Jiang Numerical Study of a Miniaturized, 1–3 Piezoelectric Composite Focused Ultrasound Transducer Applied Sciences 1–3 composite piezoelectric focused ultrasound miniaturized transducer transducer design |
| title | Numerical Study of a Miniaturized, 1–3 Piezoelectric Composite Focused Ultrasound Transducer |
| title_full | Numerical Study of a Miniaturized, 1–3 Piezoelectric Composite Focused Ultrasound Transducer |
| title_fullStr | Numerical Study of a Miniaturized, 1–3 Piezoelectric Composite Focused Ultrasound Transducer |
| title_full_unstemmed | Numerical Study of a Miniaturized, 1–3 Piezoelectric Composite Focused Ultrasound Transducer |
| title_short | Numerical Study of a Miniaturized, 1–3 Piezoelectric Composite Focused Ultrasound Transducer |
| title_sort | numerical study of a miniaturized 1 3 piezoelectric composite focused ultrasound transducer |
| topic | 1–3 composite piezoelectric focused ultrasound miniaturized transducer transducer design |
| url | https://www.mdpi.com/2076-3417/13/1/615 |
| work_keys_str_mv | AT howukkim numericalstudyofaminiaturized13piezoelectriccompositefocusedultrasoundtransducer AT xiaoningjiang numericalstudyofaminiaturized13piezoelectriccompositefocusedultrasoundtransducer |