Column-by-column compositional mapping by Z-contrast imaging
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Updated: Jun 27, 2026

Three-dimensional Confocal Analysis of Microglia/macrophage Markers of Polarization in Experimental Brain Injury
Published on: September 4, 2013
S I Molina1, D L Sales, P L Galindo
1Departamento de Ciencia de los Materiales e IM y QI, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, Cádiz, Spain. sergio.molina@uca.es
Abstract:
A phenomenological method is developed to determine the composition of materials, with atomic column resolution, by analysis of integrated intensities of aberration-corrected Z-contrast scanning transmission electron microscopy images. The method is exemplified for InAs(x)P(1-x) alloys using epitaxial thin films with calibrated compositions as standards. Using this approach we have determined the composition of the two-dimensional wetting layer formed between self-assembled InAs quantum wires on InP(001) substrates.
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