One of the newer machines within our capabilities is the Transmission Electron Microscope (TEM). Yesterday, Erica and Amir examined some samples for a collaborator with the TEM.
Transmission electron microscopy requires an electron-transparent sample, and is capable of resolving individual atoms. Among the information that can be gained from the TEM are atomic structure, dislocation structure, and local elemental composition.
Here are some useful links for an introduction to TEM: