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We demonstrate that porous Polyvinylidene fluoride (PVDF) film can be used as a flexible piezoelectric pressure sensor with high sensitivity. Asymmetric porous structure is developed to promote larger collecting area and aligned poling direction. Film structure can be controlled by dispersing micro-scale pores in a polymer matrix with a dense top layer. Piezoelectric output is enhanced by optimization...
We demonstrate the design of thin flexible pressure sensors based on piezoelectric PVDF-TrFE (polyvinyledenedifluoride-tetrafluoroethylene) co-polymer film, which can be integrated onto a catheter, where the compact inner lumen space limit the dimensions of the pressure sensors. Previously, we demonstrated that the thin-film sensors of one micrometer thickness were shown to have better performance...
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