https://www.pi-usa.us/en/tech-blog/ultrasound-generation-what-is-the-difference-between-multilayer-piezo-transducers-and-conventional-piezo-transducers
Ultrasound Generation: What is the difference between Multilayer Piezo Transducers and Conventional...
Low Voltage Ultrasonic Transducer with Multilayer Piezo Technology by PI
what isthe differencepiezo transducersultrasoundgeneration