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Fundamental study on improvement of piezoelectricity of poly(ι-lactic acid) and its application to film actuators

机译:改善聚乳酸的压电性及其在薄膜驱动器中的应用基础研究

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摘要

We designed a new film actuator, whose driving force is generated by a surface wave, which induces rotational motion. Its performance is similar to that of a rotation motor even though the new film actuator has no complex mechanical parts. To realize the film actuator, we used a poly(l-lactic acid) (PLLA) film with improved piezoelectricity. First, we theoretically investigated the necessary conditions for a surface wave to be generated on the end face of a PLLA film by the fusion of its shear piezoelectricity and resonance, and then experimentally realized this. Using the actuator made using the PLLA film, we demonstrated that the clockwise and counterclockwise rotation of an object placed on the end face of the PLLA film actuator could be freely controlled by changing the frequency of the ac voltage applied to the actuator.
机译:我们设计了一种新型的薄膜执行器,其驱动力是由表面波产生的,该表面波会引起旋转运动。即使新型薄膜执行器没有复杂的机械零件,其性能也与旋转电机相似。为了实现薄膜致动器,我们使用了具有改善的压电性的聚(l-乳酸)(PLLA)薄膜。首先,我们从理论上研究了通过剪切压电和共振的融合在PLLA膜的端面上产生表面波的必要条件,然后通过实验实现了这一点。使用使用PLLA薄膜制成的执行器,我们证明了可以通过改变施加到执行器上的交流电压的频率来自由控制放置在PLLA薄膜执行器端面上的物体的顺时针和逆时针旋转。

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