Figure 1
(a) Aberration-corrected FEI Titan G2 80–200 kV scanning transmission electron microscope equipped with the `Super-X' XEDS detector system at the University of Manchester (being filmed for the BBC News). (b) Composite XEDS elemental map obtained for a sample of quantum dots and revealing a core-shell morphology [unpublished data similar to the sample shown in McElroy et al. (2014)]. (c) Tomographic XEDS elemental data set revealing the three-dimensional compositional segregation within an individual Au–Ag nanoparticle. [Reprinted with permission from Slater et al. (2014). Copyright (2014) American Chemical Society.] |