Figure 3.
Strain‐responsive performances. a–c) Normalized resistance (ΔR/R 0) changes versus uniaxial strain for prepared samples of a) aligned and deposited AgNWs on randomly wrinkled structure, b) randomly deposited AgNWs on various wrinkle geometries (random, zigzag, straight, and flat) (insets: OM images of four cases in wrinkle geometries), and c) optimized performance for stretchable strain sensor. d) Deformation of AgNWs under tensile strain up to 80% with OM and SEM images. e) Temperature changes of the user‐interactive strain sensor in freestanding state as a function of tensile strain. Insets: generated heat change images obtained with an IR camera. f) UV–vis spectroscopy data of the various colors under different strains. Insets are images of color changes recorded with an optical camera.