Fig. 1
From: Digital coding of mechanical stress in a dynamic covalent shape memory polymer network
Dynamic covalent shape memory polymer and mechanism for spatially controlled stress. a Polymer network synthesis. b Quantitative shape memory cycle (black line: strain; red dotted line: stress; blue dotted line: temperature). c Plasticity as reflected in stress relaxation at various temperatures. d Optical reflection of stresses in two specimens deformed to the same strain (50%) under elastic and plastic deformation mechanisms, respectively (detailed experimental conditions in the Supplementary Methods). The dashed line was drawn to indicate the dimension of Specimen 2. e Spatio-selective plasticity in the shape memory network. The changes at the molecular scale are illustrated in the bottom row cartoons with the dashed circle corresponding to the dot
