Figure 4: The properties of the stretchable polymer-based ECDs.

(a) The ultraviolet-visible spectra of the neutral and oxidized P3HT. (b) The colour switching behaviour of the ECDs at 0% strain. (c) The enlarged spectra of the single switching cycle at 0% strain. (d) The enlarged spectra of the single switching cycle at 20% strain. (e) The cyclic switching at 0% strain. (f) The cyclic switching at 20% strain.