Fig. 3: Reprograming, reconfiguring, and passivating the microdevices enabled by DLW and micro-molding with multiple material types. | Nature Communications

Fig. 3: Reprograming, reconfiguring, and passivating the microdevices enabled by DLW and micro-molding with multiple material types.

From: Creating three-dimensional magnetic functional microdevices via molding-integrated direct laser writing

Fig. 3

a Reprogramming the m directions (white arrows) of the micro-rotors by applying magnetic field B (blue arrows). The video (Supplementary Movie 4) frames at the bottom correspond to each reprogramming scenario above. The micro-rotors are immersed in water with a 15 mT in-plane rotating magnetic field. The magnetic rings for color shaded rotors are composed of CrO2 and the other ones are composed of NdFeB. b Schematics showing the DLW process of silk hydrogel and the bending motion under rotation. The video (Supplementary Movie 5) frame shows the spinning motion of the micro-rotor under a 15 mT 0.8 Hz rotating magnetic field in the water. c Reconfiguring the geometry by degrading the printed silk “windmill” structure in protease XIV solution at room temperature, then rewriting three beams on the same micro-rotor base. d Micro-capsules with fully encapsulated NdFeB-silicone rubber composite core with DLW biocompatible IP-PDMS shell.

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