Numerical Study of a Miniaturized, 1–3 Piezoelectric Composite Focused Ultrasound Transducer

This study aimed to develop an optimal methodology for the design of a miniaturized, 1–3 piezoelectric composite focused ultrasound transducer. Miniaturized (FUS) devices, generally guided through catheters, have received considerable attention in biomedical and fields as they can overcome technical restrictions typical FUS transducers. However, miniaturized transducers cannot readily generate high acoustic intensity because their small aperture sizes vibration mode coupling. As such, transducers, having electromechanical coupling efficient directivity, break current restrictions. systematic designing has not been thoroughly discussed so far. Therefore, this study, we designed using analytical numerical methods. Specifically, extensive parametric studies were performed finite element analysis under coupled field with piezoelectricity, structural vibration, pressure. The simulation results confirmed that type transducer produces much higher (>160%) pressure output at focal point than single-phase device. Furthermore, array interstitial was predicted produce unprecedented approximately 188 W/cm2 short duty cycle (1%). will provide valuable development interstitial, selection parameters.