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. 2022 Jan 27;12(2):72. doi: 10.3390/bios12020072

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© 2022 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/).

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Characterization of PDMS substrates with different mixing ratios. Results of water contact angles measurements on PDMS substrates: (a) Pristine PDMS. (b) Oxygen plasma treatment of the PDMS. Five measurements were taken and averaged.