Figure 4

2D histograms of constructed from the approach section of 50 consecutively measured force-distance curves collected with AFM probes having a spring constant of 0.66 N/m (a,b), 0.20 N/m (c,d) and 0.09 N/m (e,f).

2D histograms of constructed from the approach section of 50 consecutively measured force-distance curves collected with AFM probes having a spring constant of 0.66 N/m (a,b), 0.20 N/m (c,d) and 0.09 N/m (e,f).