Figure 2
From: A highly stretchable, helical copper nanowire conductor exhibiting a stretchability of 700%

(a) Relative resistance change under various strains for stretchable CuNW electrodes fabricated on the planar and pre-strained PDMS substrates. (b) Optical images and (c) FESEM images of CuNW networks during stretching. (d) Relative resistance variations of the CuNW electrodes fabricated on both unstrained and pre-strained substrates as a function of repeated stretching cycles.