fig2

Figure 2. (A) Schematic illustration of the mechanically-guided assembly process. (Reproduced with permission from Ref.^[63]. Copyright^© 2019. WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim); (B) structural design through origami and kirigami methods. (Reproduced with permission from Ref.^[239]. Copyright^© 2021. AIP Publishing); (C) light-based, photocurable material-based, and direct ink-based 3D printing (Reproduced with permission from Ref.^[240]. Copyright^© 2016. Springer Nature).