Self-folded corrugated structure (SCS). (a) Conceptual diagram of the SCS fabrication process. The SCS is fabricated by defining the printing pattern on both sides and inkjet printing. (b) Self-folding process of the SCS with four creases and (c) 10 creases. The SCS required 600 s to self-fold after printing. (d) Demonstration of the SCS. A single sheet of paper deflects under its self-weight; however, the SCS can support its self-weight by increasing the second area moment. e) Demonstration of stacking the SCS. A stack of 10 sheets can withstand a mass of about 4 kg.