Fig. 1: Design concept and 3D tessellation for transformable mechanical metamaterial.
From: Engineering zero modes in transformable mechanical metamaterials

a 2D transformable tessellation consisting of periodically arranged equilateral 4-bar linkages, whose typical configurations include completely folded (CF), completely extended (CE) and partially folded (PF) configurations, and are further interpreted as continuous media with different numbers of zero modes (pink colored). b 3D realization of the transformable metamaterial via modular origami technique. c The decoupled motion in three orthogonal planes. d A 4 × 4 × 4 tessellation of 3D transformable metamaterial.