Want to use PVDF as a flexible temperature sensor due to its excellent flexibility and pyroelectric properties. But at the same time, it is piezoelectric too.
When using as a temperature sensor this piezoelectric behavior may contribute in the output voltage when stretched. In order to avoid this, is there any specific force up to which we can stretch the film without piezoelectric characteristics coming into picture, and which will not affect the voltage value?
I think there are much easier ways to measure temperature than using PVDFs. As you know piezoelectric sensors have a strong dependency to temperature, but you will have to compensate somehow the generated charges linked to mechanical strains such as vibrations, deformation or elongation …
https://www.piceramic.com/en/expertise/piezo-technology/properties-piezo-actuators/temperature-dependence/