Non-centrosymmetric 3D lattices with curved C-shaped beams exhibit an axial-bending coupling, and chirality is shown to be neither necessary nor sufficient for axial-twist or axial-bending couplings.
For instance, the pioneering design of an axial-twisting (AT) coupling structure14 was based on a four -fold rotational symmetry along three axes, corresponding to point group 432
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Unveiling New Mechanical Couplings in 3D Lattices: Axial-Bending and the Role of Symmetry Breaking
Non-centrosymmetric 3D lattices with curved C-shaped beams exhibit an axial-bending coupling, and chirality is shown to be neither necessary nor sufficient for axial-twist or axial-bending couplings.