Figure 4.
(a) Schematic overview of magnetomechanical actuation. (b) Top: schematic showing the mechanism of m-Torquer. Mousel in circular magnetic array (CMA) shows enhanced motor activity compared to that without magnetic field applied through CMA. (c) Top: overview schematic of hydrogel magneto-mechanical actuators. Bottom: a significant increase in mCherry expression was observed for mice fed a doxycycline diet for Notch1 expression, applied alternating magnetic field, and h-MMA injection, in contrast to control groups. (d) Left: overview schematic of magnetic vortex nanodiscs which exert torque on cell membranes during transition from magnetic vortex state to in-plane magnetization upon applied magnetic field. Right: calcium influxes were observed in response to multiple magnetic field applications. Adapted with permission from ref (22) copyright 2021 Nature Publishing Group; ref (62) copyright 2022 John Wiley & Sons, Inc; and ref (63) copyright 2023 American Chemical Society, respectively.