Fig. 7

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Building a 3D data cube either as collection of parallel EELS spectra recorded at different points (x,y) on the specimen in a STEM microscope or as a stack of energy filtered images with energy ΔE (from [42]). The individual bit of useful information (0D) is the intensity recorded in an energy-loss channel of width δE at ΔE and on a pixel size of area δx x δy at (x,y).

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