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. 2019 Feb 21;4:142–150. doi: 10.1016/j.bioactmat.2019.02.002

Fig. 5.

Fig. 5

Surface hydrophilicity analysis. (A) Representative images of water droplet formation on aligned and flat PDMS substrates with different coatings. (B) Quantification of water drop contact angle. Collagen, PD and PD/collagen coating significantly improved surface hydrophilicity, with highest hydrophilicity observed after PDMS/PD/collagen coating.