Figure 3.

(a) The indentation profile used in the study which included an 8 µm off-set, so the sample was indented 4 µm. (b) The indentation curve illustrates the offset, with the load only increasing after the probe has moved 8 µm. The loading slope of the loading curve is used to calculate the elastic modulus. (c) The average effective E of each sample from 25 indentations with error bars representing the standard deviation. (d) An effective E map of sample B5 representing the 800 µm × 800 µm 25 point indentation matrix with 200 µm between indentations.