The use of energy dispersive X-ray tomography in the scanning transmission electron microscope to characterize elemental distributions within single nanoparticles in three dimensions is described.
Slater, T. J. A., Lewis, E. A., Haigh, S. J. Energy Dispersive X-ray Tomography for 3D Elemental Mapping of Individual Nanoparticles. J. Vis. Exp. (113), e52815, doi:10.3791/52815 (2016).