Herein, the fabrication of multi‐responsive and hierarchically organized nanomaterial using core‐shell SrF2 upconverting nanoparticles, doped with Yb3+, Tm3+, Nd3+ incorporated into gelatin methacryloyl matrix, is reported. Upon 800 nm excitation, deep monitoring of 3D‐printed constructs is demonstrated. Addition of magnetic self‐assembly of iron oxide nanoparticles within the hydrogel provides anisotropic structuration from the nano‐ to the macro‐scale and magnetic responsiveness permitting remote manipulation. The present study provides a new strategy for the fabrication of a novel highly organized multi‐responsive material using additive manufacturing, which can have important implications in biomedicine.
Multifunctional HydrogelsIn article number http://doi.wiley.com/10.1002/aisy.201900105, Adolfo Speghini, Tiziano Serra, and co‐workers report the fabrication of a 3D printed multi‐responsive and hierarchically organized material for deep monitoring and remote manipulation. This light and magnetic field responsive hydrogel holds promise for the generation of advanced bionic devices.
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