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. 2019 Feb 28;14:72. doi: 10.1186/s11671-019-2906-1

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© The Author(s). 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 2 — a CA of the glass substrates treated in piranha for different time, inset is the peeling force as a function of treatment time. b DSC pattern of PVDF samples. c FTIR spectra of PVDF samples, inset is β-phase content as a function of treatment time calculated from the FTIR results. d Pyroelectric response of PVDF samples without undergoing thermal poling, inset is the simplified schematics of homemade signal readout circuit