Fig. 5 Fabrication of origami structures by two-side illuminations. Fabrication of origami structures by two-side illuminations. (A) Schematic process of two-side illumination method. (B) Table (panel intensity, 18 mW cm−2; petal intensity, 2.5 mW cm−2; irradiation time of each side, 7 s). (C) Miura structure (panel intensity, 20 mW cm−2; hinge intensity, 2 mW cm−2; irradiation time of each side, 7 s). (D) Tent (panel intensity, 18 mW cm−2; hinge intensity, 2 mW cm−2; irradiation time of each side, 7 s). (E) Crane (panel intensity, 20 mW cm−2; body hinge intensity, 1 mW cm−2; wing hinge intensity, 2 mW cm−2; irradiation time of each side, 15 s). Created by two-side illumination method. Zeang Zhao et al. Sci Adv 2017;3:e1602326 Copyright © 2017, The Authors