“…Failures in the lower layers of semiconductor devices are usually examined by removing the surface of a sample until the layer of interest followed by electrical probing on that layer [1,2] or by cutting out a part of the sample (lamella) with the focused ion beam (FIB) [3] and by analysing the lamella with a scanning transmission electron microscope (STEM) detector. Alternatively or in addition, the lamella is transferred to a transmission electron microscope (TEM) [4][5][6][7] for further analysis.…”