Beam Predictability for high power transducers
Focus control is an important element in designing a transducer for medical therapy : it is essential to accurately control the treatment zone and to thus protect the healthy tissue.
The intrinsic features of Imasonic’s piezo-composite structure enable radial modes to be reduced, thus favoring the vibration according to the thickness mode. The electro-acoustic response obtained is thus very close to the theory and the acoustic field does not present any hot points outside the focal point. See the illustration below.
Cathignol et al., Comparison of acoustical fields radiated from piezoceramic and piezocomposite highly focused transducers, J. Acoust. Society of America 1999