Figure 1. Schematic illustration of a dual magnetic field-responsive elastomer, capable of reversible actuation under a DC magnetic field and triggerable degradation under an AC magnetic field (IMAGE)
Caption
Schematic illustration of a dual magnetic field-responsive elastomer, capable of reversible actuation under a DC magnetic field and triggerable degradation under an AC magnetic field.
(A) Fabrication process and working principle of the dual magnetic field-responsive soft composite: Preparation of a homogeneous mixture by blending silicone matrix, Fe3O4 NPs, DPI-HFP, and FIA (left); molding, thermal curing, and demolding the mixture to obtain predefined actuator shape (middle); DC field-driven magnetic actuation (right, top) and AC field-induced degradation (right, bottom).
(B) Photograph of the magnetic actuator and schematic illustration showing randomly distributed magnetic particles and their spin states (middle). Directional actuation induced by the alignment of magnetic particles and spins under 300 mT DC magnetic field (left). The magnetothermal degradation of the soft actuator due to heat generation from magnetic particles, caused by repeated spin excitation and relaxation under 5.8 GHz and 125 mT of AC magnetic field (right).
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© Advanced Functional Materials, originally published in Advanced Functional Materials
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