Afficher la couverture 'Bowl-shaped ZnO ultrasonic transducer for photoacoustic/ultrasonic multimode microscopy | Zhang, J.' en grand format
/5

0 avis

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

Archive ouverte : Communication dans un congrès

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

Edité par HAL CCSD ; IEEE

International audience. 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.

Consulter en ligne

Suggestions

Du même auteur

Fracture failure for the teeth of sprocket wheels in mineral conveying equi...

Archive ouverte: Article de revue

Xu, N. | 2020

Sensitivity-Bandwidth Optimization of PMUT with Acoustical Matching Using F...

Archive ouverte: Article de revue

He, Le-Ming | 2022-03

International audience. A new model in finite element method to study round-trip performance of piezoelectric micromachined ultrasonic transducers (pMUTs) is established. Most studies on the performance of pMUT are ...

Development of backing piezoelectric micromachined ultrasonic transducer (B...

Archive ouverte: Communication dans un congrès

Wang, Xu-Bo | 2021-09-11

International audience. To improve the problem of narrow bandwidth and large crosstalk in high-frequency PMUT array, a PMUT device with a damping backing structure (B-PMUT) is proposed and realized. The device is a ...

Du même sujet

Morphological, structural, electrical, and piezoelectric analysis of hydrot...

Archive ouverte: Article de revue

Hamdi, Abderrahmane | 2022-07

International audience. In this present work, we have successfully fabricated a piezoelectric structure based on ZnO nanowires (ZnO NWs) using a simple, low cost and environmentally friendly hydrothermal method. Thi...

A CMOS Compatible Thermoelectric Device made of Crystalline Silicon Membran...

Archive ouverte: Article de revue

Bah, Thierno-Moussa | 2022-12-10

International audience. Herein, we report the use of nanostructured crystalline silicon as a thermoelectric material and its integration into thermoelectric devices. The proof-of-concept relies on the partial suppre...

Effet de l'angle de charge sur les harmoniques d'efforts magnétiques dans l...

Archive ouverte: Communication dans un congrès

Le Besnerais, Jean | 2016-06-07

International audience. Cet article étudie l'effet de l'angle de charge sur les efforts harmoniques de Maxwell (tangentiels et radiaux) et les bruits et vibrations d'origine magnétique dans deux machines synchrones ...

Further investigation of convolutional neural networks applied in computati...

Archive ouverte: Article de revue

Gong, Ruohan | 2022-04-07

International audience. Convolutional neural networks (CNN) have shown great potentials and have been proven to be an effective tool for some image-based deep learning tasks in the field of computational electromagn...

Thermal and hygroscopic study of hemp concrete in real ambient conditions

Archive ouverte: Article de revue

Asli, M. | 2021-04

International audience

Opal: an open source ray-tracing propagation simulator for electromagnetic ...

Archive ouverte: Article de revue

Egea-Lopez, Esteban | 2021-11-17

International audience. Accurate characterization and simulation of electromagnetic propagation can be obtained by ray-tracing methods, which are based on a high frequency approximation to the Maxwell equations and ...

Chargement des enrichissements...