Histograms of plateau forces measured for the peeling of T4P from (a) mica (434 values), (b) gold (838 values), and (c) polystyrene (155 values) using AFM cantilevers with sharp pyramidal tips. (d) Histogram of plateau forces measured for the peeling of T4P from mica (103 values) using AFM cantilevers with a 600 nm diameter colloidal tip. For the histograms in (b)–(d), the solid lines correspond to best fits of Gaussian functions to the data, with the best-fit center positions and standard deviation values indicated on the plots. To see this figure in color, go online.