fig1

Figure 1. Schematic of mechanical design of additive manufactured soft materials based on the four most important aspects [distortion design: how to control the geometric accuracy of additive manufactured soft materials; interface design: how to ensure the interfacial strength and to program the anisotropy of additive manufactured soft materials; composites design: how to manufacture multi-material soft composites; four-dimensional (4D) printing design: how to manufacture 4D shape-changing soft structures].