Fig. 4: Application of DMCS-hydrogel in a mobile device.
From: Design of large-span stick-slip freely switchable hydrogels via dynamic multiscale contact synergy
a The physical image of the mobile device manufactured using 3D printing technology. Its tracks were equipped with thermally responsive DMCS-hydrogels that caused a transition from high adhesion and high friction (High FA and FF) to low adhesion and low friction (Low FA and FF) during heating and cooling. Scale bar, 15 mm. Motion capture images of the mobile device crawling on a vertical metal plate at low temperature (b) and high temperature (c), as well as the related time-distance curve. Infrared thermal images showed the heat transfer process from the temperature-controlled substrate to DMCS-hydrogel. d The precise controllability of the motion behavior of mobile devices on the intelligent temperature-controlled substrate consisted of a two-part temperature regulator and e the associated time-distance curve. v: uniform linear motion at low temperature; i: motion curve during heating; ii: the process of stripping; iii: free fall. g: gravitational acceleration.
