Figure 4

STEM and STEM-EDX elemental mapping images. (A, B) STEM images of the ultramicrotomed porous γ-Fe2O3/Au/mSiO2 microspheres. (C-E) STEM-EDX elemental mapping images of the selected area in Figure 4A.
STEM and STEM-EDX elemental mapping images. (A, B) STEM images of the ultramicrotomed porous γ-Fe2O3/Au/mSiO2 microspheres. (C-E) STEM-EDX elemental mapping images of the selected area in Figure 4A.