Fig. 4: Mechanical perturbations drive rejuvenation or aging.
a Spatial maps of strain rate during and following heat pulse, with time indicated. b Spatially-averaged strain rate, including 10 s of heating applied (red rectangle), and relaxation after removal of the heat source. c Relaxation timescale τe during and following heat response (Supplementary Fig. 10). d Spatial maps of strain rate determined over one tap cycle (tap number indicated in figure). Note that after many taps, creep is mostly confined to a thin, localized layer at the surface. e Time series of spatially-averaged strain rate (blue line) during tapping (1 tap = 1 s). Black line indicates moving-window average (100 taps).
