Fig. 1. Preparation of RM-SMC. (a) Schematic of preparing NdFeB@EVA magnetic microcapsules by phase separation method; (b) scanning electron microscope images of NdFeB microparticles (MPs) and NdFeB@EVA microcapsules (MCs); (c) schematic of preparing RM-SMC film

Fig. 2. Femtosecond laser processing system and processing parameters. (a) Schematic of femtosecond laser processing; (b) optical path diagram of femtosecond laser processing system; (c) presentation of two-dimensional structures with design pictures shown in upper part and physical objects shown in lower part; (d) relationship between scanning thickness and scanning number

Fig. 3. Magnetic domain recoding and deformation principles of RM-SMC films. (a) Process of recoding, heating softening, magnet-induced deformation, and shape-locking of RM-SMC films; (b) diagram of magnetic particle deflection in NdFeB@EVA microcapsules; (c) deformation and shape-locking diagrams of shape memory polymer matrix

Fig. 4. Characterization of thermodynamic and magnetic response properties of RM-SMC films. (a) DMA curves; (b) schematics of bending and twisting of strips with different encoding directions under driving magnetic field; (c) bending and twisting angles of stripes under different magnetic field strengths; (d) demonstration of reversible magnetic anisotropy programming and deformation stability of RM-SMC strip under 100 repeated deformations

Fig. 5. Multilevel three-dimensional deformations of RM-SMC film with magnetic domain distribution shown in box and scale bar of 5 mm

Fig. 6. Rolling robot. (a) Encoding, deformation, and shape-locking of rolling robot; (b) rolling process of robot under rotating magnetic field; (c) movements of robot on different terrains and load-bearing process of robot after deformation

Fig. 7. Cargo robot. (a) Cargo placement, magnetic-actuated deformation, cargo locking, and cargo release of cargo robot; (b) directional transport process of cargo robot under rotating magnetic field; (c) cargo release process of cargo robot

Fig. 8. Spiral robot. (a) Heating-induced magnetic-actuated deformation and shape locking of spiral robot; (b) spiral robot propulsion in water under rotating magnetic field