Piezos like pvdf's can be fabricated as a rod rather than a strip?

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Does anyone know if piezos like pvdf's can be fabricated as a rod rather than a strip?
 
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From what I read on wikipedia piezoelectric films seem to be the exception not the norm. Can you use a quartz rod or does it need to be a plastic?
 


strips are fairly common. I even own one in strip form. As for a quartz rod, it would be too stiff. I would need something with a lower modulus to allow for bending.