Fig. 4.
Shape programmability of the smart nacre. a Stress relaxation of the smart nacre under iso-strain conditions (3%). b Elasticity-based shape memory cycle of the smart nacre. c Shape re-configuration via plasticity. d Shape recovery under a 50 g load for neat polymer and the smart nacre (Vf = 70%). e Summary of the output work (W = mw gh/ms) for neat polymer and smart nacres with various filler contents, in which mw, g, h, and ms represent the load, gravitational acceleration, lifted height, and sample weight, respectively. Error bars represent standard deviations calculated from five specimens. Scale bar in c is 2 cm and in d is 1 cm