Fig. 2
From: Digital coding of mechanical stress in a dynamic covalent shape memory polymer network
Stress and mechanical color via elastic deformation at 60 °C. a Color change during uniaxial stretching at a strain rate of 50% min−1 (numbers in yellow denoting strains in percentage). b Color evolution during continuous stretching from 0 to 180%, presented at a standard CIE-1931 color space. c Cyclic change of the light intensity (450 nm) corresponding to b. d Photographs (under bright field) of a sample underwent a shape memory cycle (sample length: 4 cm). e Light intensity change upon cyclic shape memory experiments (10% strain, 450 nm)
