Development of anti-cavitation hydrophone with hydrothermal PZT film

Novel anti-cavitation hydrophones were fabricated by depositing a hydrothermally synthesized lead zirconate titanate polycrystalline thick film on the back of a titanium plate. We could observe that output waveform from our new type anti-cavitation hydrophone was similar with the output waveform from the commercial anti-high acoustic pressure hydrophone at focal point on focused ultrasound field by the ultrasound diagnostic equipment. A durability test on our fabricated anti-cavitation hydrophone was performed by exposure to the ultrasound acoustic field with the generation of acoustic cavitation in the focal point of the focused ultrasound field and the water tank of an ultrasound cleaner. These hydrophones were not damaged by the measurement of the acoustic field formed by a high-intensity focused ultrasound device.