Shape Fixation with Magnetomechanical Actuation of Vitrimer Micropillar Arrays for Microfabrication
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Micropillar arrays with magneto-responsivity are suitable for microfabrication via uniformly and contactlessly reconfiguring the morphology of a microsurface. However, the magnetically reconfigured shape of the microsurface is temporary and only maintained when an external magnetic field is applied. In this presentation, we suggest a new approach to fix the magnetically reconfigured microsurface using vitrimer with dynamic covalent bonds. Vitrimer micropillar arrays achieved a maximum bending angle of 45º at optimized particle concentration by evaluating the structure-property relationship between magnetization and the modulus of vitrimer composites. In addition, we investigated the effect of particle concentration on the dynamic covalent bonds of vitrimer composites. Finally, we demonstrate shape fixation and the property changes of the microsurface using a thermomechanical process on magnetically deformed micropillar arrays via dynamic covalent bonds.