11 Electron Tomography
267
Fig. 11.3 Flow chart for the CS-ET process described in the text
11.2.2 EELS Tomography: From Spectrum Image Tilt Series
to the Spectrum Volume
The end goal of analytical tomography is to retrieve the complete information about a
3D structure at the nanoscale. This is equivalent to reconstructing a four-dimensional
object, where the first three dimensions correspond to the geometry of the sample,
and the fourth dimension is related to the chemical composition. In the case of EELS
tomography, the fourth dimension is the energy loss. This object is known as the
spectrum volume (SV), where each voxel contains an EELS spectrum (see Fig. 11.4)
[36, 37].
Fig. 11.4 Schematics of the spectrum volume approach for electron tomography. The individual
spectra and spectrum line spectrum profile shown correspond to cerium oxide (CeO 2 ) doped with
gad5olinium (Gd)
267
Fig. 11.3 Flow chart for the CS-ET process described in the text
11.2.2 EELS Tomography: From Spectrum Image Tilt Series
to the Spectrum Volume
The end goal of analytical tomography is to retrieve the complete information about a
3D structure at the nanoscale. This is equivalent to reconstructing a four-dimensional
object, where the first three dimensions correspond to the geometry of the sample,
and the fourth dimension is related to the chemical composition. In the case of EELS
tomography, the fourth dimension is the energy loss. This object is known as the
spectrum volume (SV), where each voxel contains an EELS spectrum (see Fig. 11.4)
[36, 37].
Fig. 11.4 Schematics of the spectrum volume approach for electron tomography. The individual
spectra and spectrum line spectrum profile shown correspond to cerium oxide (CeO 2 ) doped with
gad5olinium (Gd)