Fig. 4.

Self-healing stretchable wire. (a) Schematic demonstrating the severing and restoration of the conduction path. (b) Relative resistance of the wire during a severing-restoration sequence. The researchers attribute the slight increase in resistance after restoration to imperfect alignment of the channel interfaces or displacement of small amounts of metal during the severing process. (c) Mechanical characterization of the wire before being cut (continuous line) and after being restored (discrete points). The self-healed polymer fails at a lower strain (~60%). Image reproduced from Ref. 7.