Fig. 4: The selective reflection and mechanically switchable properties of SS-CLCE. | Nature Communications

Fig. 4: The selective reflection and mechanically switchable properties of SS-CLCE.

From: Buprestidae metamorphosis-inspired stiffening photonic elastomers for shape-color integrated memory and information encryption

Fig. 4

Changes in the reflection color with stretching after a heating and b aging. The red dashed circle indicates the data collection positions. c Stress-strain curves for strains ranging from 0 to 100% at different aging times at 20 °C. The right half shows the calculated values of Young’s modulus (E) (the inset is a magnified view of the data for shorter aging times) and strain energy density (U). d Cross-section SEM image of the SS-CLCE, with yellow lines indicating the pitch length and direction, while the dashed lines mark the regions where the pitch is absent. e DSC curves after aging at different temperatures. f Stress-strain curves for the 0–100% strain range after aging at different temperatures at a fixed time of 24 h. The dashed arrows reflect the effect of increasing aging temperature on the self-reinforcement effect. g Schematic diagrams of temperature-time dependent phase transitions.

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