Piezoceramic materials offer a good compromise between output sensitivity and bandwidth. Transducers made from a piezoceramic tend to require much lower drive signal voltages than PVDF, but are typically limited to bandwidths below 65% of centre frequency. When higher transmit sensitivity is required, lower damped backings can be applied to the ceramic. As damping is reduced, output sensitivity increases, but bandwidth decreases.
Precision Acoustics Ltd supplies a range of Piezoceramic transducers, all of which are designed for immersion use. Piezoceramic transducers can be made as unfocussed devices or with a spherical (point) focus.
Piezoceramic transducers are useful in a wide range of applications: imaging (medical or NDT), therapeutic ultrasound, materials characterisation, fundamental metrology and calibration. All Precision Acoustics Ltd transducers are designed specifically for each customer’s applications.