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PVdF压电薄膜是一种新型压电换能材料,它的一些独特的性能使之十分适用于研制各种用途的宽带换能器。本文在简要介绍PVdF压电薄膜性能及特点的基础上,综述了用其研制的换能器在医学超声成象、医疗诊断以及医用超声换能器的测量和校准等方面的应用进展。指出,随着PVdF压电薄膜制作工艺的改进,压电性能的提高,PVdF压电薄膜换能器在医用超声领域中将有非常广阔的前景。
PVdF piezoelectric film is a new type of piezoelectric transducers, some of its unique properties make it very suitable for the development of wideband transducers for various applications. Based on the brief introduction of the properties and characteristics of PVdF piezoelectric thin films, the progress in the application of transducers developed by them in the field of medical ultrasound imaging, medical diagnosis and measurement and calibration of medical ultrasonic transducers is reviewed. It is pointed out that PVdF piezoelectric thin film transducers will have very broad prospects in the field of medical ultrasound with the improvement of the manufacturing process of PVdF piezoelectric thin films and the improvement of piezoelectric properties.