Fig. 4
From: Multiscale nanowire-microfluidic hybrid strain sensors with high sensitivity and stretchability
SEM images of the CuNW/Ecoflex composite under different strains: a 0%, b 15%, and c 80% (the inset is the magnified crack). The scale bar is 60 μm. c, f Corresponding schematic diagrams of stretched nanowire or nanotube networks (upper) and stretched devices (lower), showing the resistance networks. These schemes illustrate the conducting mechanisms of the NMH strain sensors corresponding to the evolution of the morphology on the left. g Relative change in the resistance of the NMH strain sensor obtained from experiments (open dots) and simulations using the proposed percolation model (curves)
