Geometry effect on piezo-composite transducers with triangular pillars

摘要

High frequency transducers/arrays made of piezocomposite materials have the advantages of lower acoustic impedances, which better match tissue and a flexibility that allows focusing without the use of an acoustic lens. However, developing a high-frequency piezo-composite material for such arrays is still a challenge due to the extremely small pillar dimensions required to avoid the interference from the lateral resonances.