Fig. 3
From: Modular DNA strand-displacement controllers for directing material expansion
Hydrogel particle unlocking. a Schematic of crosslink unlocking by a Key strand through strand-displacement. b Fluorescence micrographs of particles. Particles without locks swell when hairpin fuel is added, but particles with locked crosslinks show less than 4% change in area over 70 h (Supplementary Fig. 11). Addition of Key strands to locked particles allows swelling. Scale bars: 500 µm. c The change in area of the 2D projection of each particle over time for different concentrations of Key strand added at time 0. Solid curves are the averages of measurements of 2 particles; dotted lines are the individual replicates of each average
