A micro dual-frequency transducer based on contour-extensional vibration and thickness mode
Source abstract
Abstract
This paper presents a single piezoelectric transducer with dual-frequency characters by utilizing contour-extensional mode and thickness mode. A 2.5 MHz and 8.5 MHz frequency transducer prototype is designed by Finite element method (FEM) analyses and verified by experiment. Performance of the transducer is then evaluated through the measurement of admittance curves and pulse-echo responses. It’s demonstrated experimentally that the proposed transducer has -6dB bandwidth of 39.4% @1.0 Vpp at 2.4 MHz and 34.6% @1.1 Vpp at 8.9 MHz, respectively. The proposed dual-frequency transducer has potential applications in vivo thrombolytic therapy and ultrasound-guide of pedicle screws.
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Research context
OpenAlex topics: Ultrasound Imaging and Elastography · Ultrasound and Hyperthermia Applications · Photoacoustic and Ultrasonic Imaging
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Affiliations
Medical Acoustic Technology Department, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences , Suzhou, Jiangsu 215163, People’s Republic of China
Funding
National key R&D program of China · Social development in Jiangsu-clinical frontier technology · National Natural Science Foundation of China · Youth Innovation Promotion Association of the Chinese Academy of Sciences
References (13)
Show source-provided references
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