“…Correlation with other techniques which can also capture size and homogeneity, such as those mentioned herein, can provide incredibly valuable information in a complete analysis of a surface material [59,63]. Great developments in such correlated analysis has been made by Fulghum and co-workers, who have successfully correlated imaging XPS with AFM, FTIR and confocal microscopy [20,33,34,64,65], whilst others have sought to correlate quantitative imaging XPS with electron backscatter diffraction (ESBD) for corrosion of grain boundaries [44].…”