柔性可穿戴压电超声传感器研究进展

Research progress on flexible wearable piezoelectric ultrasound transducers

介绍了柔性可穿戴压电超声传感器压电层、背衬层、匹配层、封装层、电极层的结构设计和材料选择,论述了利用有限元分析(Finite Element Analysis,FEA)技术进行柔性可穿戴压电超声传感器模拟设计的优势,阐述了电极图案化等柔性可穿戴压电超声传感器制造领域中的关键技术,分析了柔性可穿戴压电超声传感器在深层组织成像、血流动力学监测、促进骨损伤恢复、辅助透皮给药等领域的应用情况。展望了柔性可穿戴压电超声传感器的发展方向,指出未来可通过应用高性能信号处理技术、改进超声探测成像算法、优化传感器结构设计方案等手段,进一步提升柔性可穿戴压电超声传感器的测量准确性、使用安全性和集成化程度,促进该类传感器市场化、产业化发展。

The structural design and material selection of the piezoelectric layer,backing layer,matching layer,encapsulation layer,and interconnecting electrodes of flexible wearable piezoelectric ultrasound transducers are introduced,the advantages of the simulation design of the transducers using finite element analysis(FEA)technology are discussed,and key technologies in the transducers fabrication,such as electrode patterning,are described.The applications of this type of sensors in the fields of deep tissue imaging,haemodynamic monitoring,promoting the recovery of bone damage,and assisting transdermal drug delivery are analysed.The development direction of the sensors is outlooked,and it is pointed out that in the future,the measurement accuracy,safety and integration degree of flexible wearable piezoelectric ultrasound sensors can be further improved through the application of high-performance signal processing technology,improvement of ultrasound detection and imaging algorithm,and optimisation of the sensor structural design scheme,etc.,so as to promote the marketable and industrial development of this kind of sensors.