| 厚度模压电超声换能器无源声学材料研究进展* |
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| 引用本文： | 陈 燕,林兴国,袁懋诞,纪轩荣.厚度模压电超声换能器无源声学材料研究进展*[J].应用声学,2022,41(3):490-502. |
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| 作者姓名： | 陈 燕 林兴国 袁懋诞 纪轩荣 |
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| 作者单位： | 省部共建精密电子制造技术与装备国家重点实验室机电工程学院,省部共建精密电子制造技术与装备国家重点实验室机电工程学院,省部共建精密电子制造技术与装备国家重点实验室机电工程学院,省部共建精密电子制造技术与装备国家重点实验室机电工程学院 |
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| 基金项目： | 国家自然科学基金项目(11804059,51975131,51805097)； |
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| 摘 要： | 厚度模压电超声换能器作为超声波发射、接收以及电信号间转换的载体，是超声成像与检测系统的核心器件，一般由压电层、匹配层和背衬层3部分组成。超声换能器的性能一定程度上决定着整体超声设备的性能，影响了其在工业、医学、军事等领域的应用。该换能器的关键性能指标(带宽、灵敏度)除了受到压电层的影响，还与匹配层、背衬层等无源声学材料的设计密切相关。该文综述了近年来厚度模压电超声换能器无源声学材料(匹配层、背衬层和声透镜)的研究进展，提出了当前该类材料面临的难题和解决途径，并对其未来发展方向进行了展望。
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| 关 键 词： | 厚度模 压电超声换能器 匹配层 背衬层 声透镜 |
| 收稿时间： | 2021/5/6 0:00:00 |
| 修稿时间： | 2022/5/6 0:00:00 |
Research progress of passive acoustic materials for thickness-mode piezoelectric ultrasonic transducers |
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| Chen Yan,Lin Xingguo,Yuan Maodan and Ji Xuanrong.Research progress of passive acoustic materials for thickness-mode piezoelectric ultrasonic transducers[J].Applied Acoustics,2022,41(3):490-502. |
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| Authors: | Chen Yan Lin Xingguo Yuan Maodan and Ji Xuanrong |
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| Institution: | State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment,School of Electromechanical Engineering,Guangdong University of Technology,Guangzhou,China,510006,State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment,School of Electromechanical Engineering,Guangdong University of Technology,Guangzhou,China,510006,State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment,School of Electromechanical Engineering,Guangdong University of Technology,Guangzhou,China,510006,State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment,School of Electromechanical Engineering,Guangdong University of Technology,Guangzhou,China,510006 |
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| Abstract: | Thickness-mode piezoelectric ultrasonic transducer is the core device in the ultrasonic imaging and detection system, which can realize ultrasonic transmission, reception and signal conversion. The main components of a transducer include piezoelectric(or active) layer, matching layer and backing layer. The performances of the transducers determine the overall properties of ultrasound equipment, and affect their applications in detection, medicine and military, etc. In order to improve the performance of the ultrasonic transducer, passive acoustic functional materials such as matching layer and backing layer have also drawn much attention in enhancing the transducer properties except for improving the piezoelectric layer. In this paper, the research and developing trend of passive acoustic materials such as matching layers, backing layers and acoustic lens was reviewed and prospected. |
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| Keywords: | thickness-mode piezoelectric ultrasonic transducer matching layer backing layer acoustic lens |
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