Kim, Jae-Kyeong Ahn, Se Hyeok Jung, Sun-Pill Kim, Jemoon Hwang, Deuk-Gyeom Kim, Haseon Kim, Seung-Won Lee, Dae-Young Yang, Jinkyu Cho, Kyu-Jin 2025-12-19T07:30:41Z 2025-12-19T07:30:41Z 2025-12-19 2025-12 2169-5172 https://pubs.kist.re.kr/handle/201004/153816 Origami structures are lightweight and reconfigurable, creating 3D shapes by folding 2D facets. However, increasing bending stiffness in a 3D shape is challenging because the structure needs to undergo transformation, and the thin facets are easily bent. This problem is especially critical in an angled arm shape, which serves as an element of various configurations. Here, we propose a method that leverages origami transformation, which typically reduces structural stiffness. We combined two layers with the opposite folding motion. This induces interlocking due to opposite movements in the cross-sectional direction during axial bending, resulting in high bending stiffness. Based on this, we developed an arm support device, furniture, and a shelter that remain flat in their normal state but can easily transform into shapes with high load-bearing capacity. English MARY ANN LIEBERT, INC Double-Layer Self-Locking Origami Based on Opposite Folding Motion Article 10.1177/21695172251401337 1 Soft Robotics Soft Robotics N scie scopus Robotics Robotics Article; Early Access SHOULDER origami self-locking bending stiffness soft robotics arm support device furniture shelter