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. 2023 Feb 15;15:51. doi: 10.1007/s40820-023-01015-7

Fig. 4.

Fig. 4

Studies of #4 hydrogel: a Mechanism of self-healing. b Stress–strain curves of the original and self-healing samples. c Microscopic images of the self-healing process. d Light change of an LED during the cutting/healing process. e Sensitivity graph of the original and self-healing samples