TY - JOUR
T1 - Bowl-shaped ZnO ultrasonic transducer for photoacoustic/ultrasonic multimode microscopy
AU - Zhang, Jinying
AU - Zhao, Dongdong
AU - Li, Defang
AU - Tian, Fengshuo
AU - Xu, Weijiang
AU - Wu, Xianmei
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - 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.
AB - 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.
KW - Bowl-shaped ultrasonic transducer
KW - Dual-modality imaging
KW - Self-focusing
KW - ZnO
UR - http://www.scopus.com/inward/record.url?scp=85122864691&partnerID=8YFLogxK
U2 - 10.1109/IUS52206.2021.9593419
DO - 10.1109/IUS52206.2021.9593419
M3 - Conference article
AN - SCOPUS:85122864691
SN - 1948-5719
JO - IEEE International Ultrasonics Symposium, IUS
JF - IEEE International Ultrasonics Symposium, IUS
T2 - 2021 IEEE International Ultrasonics Symposium, IUS 2021
Y2 - 11 September 2011 through 16 September 2011
ER -