Design and fabrication of an integrated dual-mode ultrasonic probe

Yuu Ono; Zhen Qu; Kuo-Ting Wu

doi:10.1016/j.ultras.2012.11.009

Design and fabrication of an integrated dual-mode ultrasonic probe

Ultrasonics. 2013 Mar;53(3):637-41. doi: 10.1016/j.ultras.2012.11.009. Epub 2012 Nov 29.

Authors

Yuu Ono¹, Zhen Qu, Kuo-Ting Wu

Affiliation

¹ Department of Systems and Computer Engineering, Carleton University, Ottawa, Ontario, Canada K1S 5B6. yuuono@sce.carleton.ca

PMID: 23261304
DOI: 10.1016/j.ultras.2012.11.009

Abstract

In this paper, we present an integrated dual-mode ultrasonic probe that is capable of transmitting and receiving longitudinal and shear waves (LW and SW, respectively) simultaneously. The probe consists of a thick piezoelectric film LW ultrasonic transducer and a substrate with a specific shape. An SW is generated inside the substrate by mode conversion. In the probe design, two factors were theoretically investigated: impedance matching between the substrate and the material being measured to improve measurement sensitivity and mode conversion efficiency at the slanted face of the substrate. The developed probe was tested with a selected silicone liquid sample to demonstrate its capability to measure the properties of a viscous liquid using both LW and SW.