Scanning Transmission Electron Microscopy of Metal-Graphene Interaction

Scanning Transmission Electron Microscopy of Metal- Graphene Interaction

Metal-graphene interaction studied via atomic resolution scanning transmission electron microscopy.

Distributions and atomic sites of transition metals and gold on suspended graphene were investigated via high-resolution scanning transmission electron microscopy, especially using atomic resolution high angle dark field imaging. All metals, albeit as singular atoms or atom aggregates, reside in the omni-present hydrocarbon surface contamination; they do not form continuous films, but clusters ...

15. Scanning Transmission Electron Microscopy

Scanning transmission low-energy electron microscopy

We discuss an extension to the transmission mode of the cathode-lens-equipped scanning electron microscope, enabling operation down to the lowest energies of electrons. Penetration of electrons through free-standing ultrathin films is examined along the full energy scale, and the contribution of the secondary electrons (SEs), released near the bottom surface of the sample, is shown, enhancing t...

Z-contrast Scanning Transmission Electron Microscopy