Fig. 2: Dynamic multiscale contact mechanism of DMCS-hydrogel.
From: Design of large-span stick-slip freely switchable hydrogels via dynamic multiscale contact synergy
a A schematic diagram to observe the contact evolution between DMCS-hydrogel and quartz glass. b Snapshots of the contact images of the low- and high-temperature DMCS-hydrogel. The bright region was in contact with the glass and the dark region was not in contact. Scale bar, 5 mm. c The relationship between the contact time and the percentage of effective contact area. d Surface wetting and dewetting of DMCS-hydrogel were observed by a confocal microscope. e The fluorescent hydrogel network was covered by water at high temperature and recovered at low temperature. This process can be repeated. Scale bar, 100 μm. f The mean IOD showed the wetting and dewetting cycles of the DMCS-hydrogels under high and low temperature conditions. g Schematic diagrams of the dynamic wetting of fluorescent water droplets on the surface of DMCS-hydrogel. h Snapshots of the dynamic wetting images of low- and high-temperature hydrogel. Scale bar, 200 μm. i The corresponding curve of time versus diffusion area.
