Nanoscale · 2015 · 78 citations · 42 references
Natural SciencesMaterials EngineeringMaterials ScienceMagnetic MaterialsNanomaterialsNanotechnologyElastomeric PolymersMagnetic ActuationMagnetic ActuatorsMagnetic AnisotropyMagnetic NanomaterialsMagnetic Thin FilmsAnisotropy EngineeringAnisotropy In Thin FilmsChainsElastomer CompositesMagnetic Actuator MaterialsMagnetic NanoparticlesNanoparticlesSoft Magnetic Actuators
We report selective and directional actuation of elastomer films utilizing magnetic anisotropy introduced by chains of Fe3O4 magnetic nanoparticles (MNPs). Under uniform magnetic fields or field gradients, dipolar interactions between the MNPs favor magnetization along the chain direction and cause selective lifting. This mechanism is described using a simple model.
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