Figure 1.

(a) The schematic illustration of the dynamic hydrogel; (b) the self-healing process between two different colored semicircle hydrogels; (c) left: storage modulus G’ (black squares) and loss modulus G’’ (red ciecles) of the original (solid) and the self-healed (hollow) hydrogel; right: G’ (red hollow squares) and G’’ (black hollow suqares) in continuous step strain experiments; and (d) the photos and the plots of cumulative release of rhodamine B under different conditions. Reprinted with permission [34]. Copyright 2011, American Chemical Society.