We report on a novel nonvolatile shape memory fluid derived from magnetic nanoparticles dispersed in water, oil, and oil/water emulsions. Magnetic fields are used to lock fluid shapes into place, even after the field is removed. Thermal treatments release the locked fluid back to its original shape.
K. Tsuchiya, Y. Hagiwara, M. Nakagawa, H. Endo and T. Kawai, Mater. Adv., 2020, 1, 2712 DOI: 10.1039/D0MA00380H
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