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. 2020 Apr 24;10(28):16313–16322. doi: 10.1039/c9ra10986b

Fig. 8. (a) Experimental setup of leak detection experiment based on changes in absorption intensity of DI water exposed to bare hydrogels and hydrogels within sealed capsules carrying red food coloring dye. (b) UV spectroscopy measurements for all samples at 520 nm over 8 hour period.

Fig. 8