Bowl-shaped ZnO ultrasonic transducer for photoacoustic/ultrasonic multimode microscopy

Jinying Zhang*, Dongdong Zhao, Defang Li, Fengshuo Tian, Weijiang Xu*, Xianmei Wu

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

A bowl-shaped ultrasonic transducer is proposed for photoacoustic/ultrasonic multimode microscopy. The transducer uses zinc oxide (ZnO) as the piezoelectric material, which has a better electromechanical coefficient than flexible PVDF polymer and ensures the detection sensitivity. The ZnO film is spherically curved realizing self-focusing. It does not require an acoustic lens, consequently avoiding echo interference by the lens. In addition, it can be integrated with optical fibers. The resonant modes of the bowl-shaped ZnO film were calculated using finite element method. A photoacoustic/ultrasonic dual-modality imaging system is under development to adapt to the designed photoacoustic transducer. First test and imaging are carried out using a commercial ultrasonic transducer.

Original languageEnglish
JournalIEEE International Ultrasonics Symposium, IUS
DOIs
Publication statusPublished - 2021
Event2021 IEEE International Ultrasonics Symposium, IUS 2021 - Virtual, Online, China
Duration: 11 Sept 201116 Sept 2011

Keywords

  • Bowl-shaped ultrasonic transducer
  • Dual-modality imaging
  • Self-focusing
  • ZnO

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Zhang, J., Zhao, D., Li, D., Tian, F., Xu, W., & Wu, X. (2021). Bowl-shaped ZnO ultrasonic transducer for photoacoustic/ultrasonic multimode microscopy. IEEE International Ultrasonics Symposium, IUS. https://doi.org/10.1109/IUS52206.2021.9593419