FPCB as an Acoustic Matching Layer for 1D Linear Ultrasound Transducer Arrays.

ABSTRACT: An acoustic matching layer is an essential component of an ultrasound transducer to achieve maximum ultrasound transmission efficiency. Here, we develop a flexible printed circuit board (FPCB) with a composite structure consisting of multiple polyimide and copper layers and demonstrate it as a novel acoustic matching layer. With a flexible substrate and robust ACF bonding, the FPCB not only serves as an acoustic matching layer between piezoelectric elements and the surrounding medium but also as a ground for the electrical connection between the transducer array elements and the folded substrate. A 1D linear ultrasound transducer array with the FPCB matching layer exhibits larger output pressure, wider -3dB bandwidth, and higher ultrasound beam intensity compared to that of an ultrasound t

SUBMITTER: Lee T 

PROVIDER: S-EPMC9332256 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature