Figure 3
Stretching mechanism of the film. SEM images of the PANI nanowire array film under different strains of (a) 0%, (b) 40% and (c) 80%. High-magnification SEM images of the nanowire islands (d) in the 0% strain state, (e) fully recovered from the 40% strain state and (f) in the 80% strain state. (g) Photographs of a powered LED indicator integrated with the PANI nanowire arrays on a PDMS substrate under different tensile strains of (g1) 0%, (g2) 25%, (g3) 50% and (g4) 75%; the sensor is indicated the red dashed line.
