( A Study on the Characteristics of the P ( VDF-TrFE ) Acoustic Microscope Transducer

P (VDF-TrFE ) 초음파현미경용 트랜스듀서의 특성에 관한 연구

The characteristics of the P(VDF-TrFE) acoustic microscope transducer were evaluated theoretically and experimentally by comparison with those of the PVDF and the ZnO acoustic microscope transducers. It was found that its insertion loss was about 5dB lower than that of the PVDF and about 13$\textbf{dB}$ higher than that of the ZnO. And its relative bandwidth was 20% which could produce the effective acoustic pulse waves having about 4 periods duration into water. Another finding was that the effective horizontal focusing resolution and the focal depth were $120\mu m and $1.5mm$, respectively.