Extended Data Fig. 10: Schematic illustrations of the methods for applying magnetic fields to actuate the printed structures.
From: Printing ferromagnetic domains for untethered fast-transforming soft materials
a, b, The magnetic fields for actuating the printed structures can be applied in two ways. A pair of electromagnetic coils are used to generate a uniform magnetic field (a). A NdFeB magnet (width 2 in, length 3 in, thickness 0.5 in, surface flux density 300 mT) is used to create spatially varying magnetic fields for dynamic actuation by combining vertical, horizontal and rotational movements of the magnet (b).
