A new type of actuators called RAINBOW(Reduced And Internally Biased Oxide Wafer) was recently developed.It is stress biased and has an arc structure,which includes a reduced and an unreduced layer.

• 基于铁电陶瓷的RAINBOW元件是一种具有内部应力偏移,含有还原层,并有特殊结构的大位移铁电驱动器。