Abstract
A piezoelectric copolymer has been characterised with a new method which takes into account the frequency dispersion by modelling the dielectric relaxation phenomenon in the material. The different steps of the characterisation are presented and experimental electromechanical values are given. These results are introduced into a modified K.L.M. scheme to model the electroacoustic response of a high frequency transducer integrating this copolymer. The simulations and experimental response are found to be in good agreement. The characteristics of the transducer have allowed to integrate it in a high resolution imaging system and image quality is evaluated for dermatologic applications.
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