Figure 3
(a) Representative dry AFM histogram showing the spread in moduli value over three 5 × 5 μm locations with 100 indentations per location on a 10% crosslinker PDMS sample, (b) box and whisker plots showing the Young’s moduli obtained across the range of PDMS samples tested by dry AFM and (c) comparison of the bulk and local mechanical characterisation of the PDMS samples tested. All AFM experiments were conducted with an indentation depth of between 500 and 1000 nm and each curve was done over 1 s. AFM experiments were conducted on three different samples for each formulation and each sample tested in three different location with 100 indentations done on a 5 by 5 μm square.
