Fig. 1: Deformation of chiral and non-chiral metamaterials.
From: Large recoverable elastic energy in chiral metamaterials via twist buckling
a, A 1/2-order lateral bending buckling of clamped-sliding rods under compression force F1rod, observed in chiral metamaterials in f. b, A first-order buckling mode of doubly clamped vertical and oblique rods in non-chiral lattices. The colour bars in a, b and f show the distribution of Mises stress σv. c–e, Octahedron (c), prism (d) and tensegrity (e) lattices. f, Compression-twist buckling of chiral metacells. The cente schematic shows a purple straight chiral arm buckling into a red curved arm with a global twisting angle (θ). g, Multilayered and 3D chiral metamaterials consisting of decoupled metacells. h, Schematic showing the enhanced energy density (ϕ), load-bearing strength (σbk) and high stiffness (E) of chiral metamaterials.
