Sookmyung Women's University 1 article published in JoVE Engineering Four-Dimensional Printing of Stimuli-Responsive Hydrogel-Based Soft Robots Yeonjae Lee1, Jiho Choi1, Youngeun Choi2, Sue Min Park1, ChangKyu Yoon1,3 1Department of Biological Sciences, Sookmyung Women's University, 3 This manuscript describes a 4D printing strategy for fabricating intelligent stimuli-responsive soft robots. This approach can provide the groundwork to facilitate the realization of intelligent shape-transformable soft robotic systems, including smart manipulators, electronics, and healthcare systems.