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

Zhang, J.; Zhao, D.; Li, D.; Tian, F.; Xu, Wei Jiang; Wu, X.

Type de document :

Communication dans un congrès avec actes

DOI :

10.1109/IUS52206.2021.9593419

Titre :

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

Auteur(s) :

Zhang, J. [Auteur]
Zhao, D. [Auteur]
Li, D. [Auteur]
Tian, F. [Auteur]
Xu, Wei Jiang [Auteur correspondant]

Transduction, Propagation et Imagerie Acoustique - IEMN [TPIA - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Wu, X. [Auteur]

Titre de la manifestation scientifique :

2021 IEEE International Ultrasonics Symposium (IUS)

Ville :

Xi'an

Pays :

Chine

Date de début de la manifestation scientifique :

2021-09-11

Titre de l’ouvrage :

: 2021 IEEE International Ultrasonics Symposium (IUS)

Éditeur :

IEEE

Date de publication :

2021

Mot(s)-clé(s) en anglais :

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

Discipline(s) HAL :

Sciences de l'ingénieur [physics]

Résumé en anglais : [en]

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 ...
Lire la suite >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.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :