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. 2023 Dec 15;13(24):3148. doi: 10.3390/nano13243148

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© 2023 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

Coordinate system and mode response directions for a FFF piezoelectric PVDF film (Left), and single-process FFF dynamic sensor design with selected dimensions (Right) [80]. Copyright 2021, Elsevier.