Piezo-polymer ultrasound transducer with controlled resonance for medicine and robotics

The need to control focus, range distance and spatial resolution is of crucial importance in many air ultrasound applications. Piezo-polymer based transducers may be used to overcome these problems. A curved transducer, based on this technology, is presented. Its peculiarity is that it is capable of resonating, in a controlled manner, over a wide frequency range, about two octaves over 20 kHz, by simply changing its bending radius. This characteristic allows us to not only investigate industrial and medical applications, but also to emulate, in all its complexity, the echo-location system of bats