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Transmission Electron Microscope (TEM)

The Transmission Electron Microscope allows to get magnified images of very thin samples and to analyze their composition.

A high-energy electron beam is sent through the thin sample. Using adapted lenses, one can get a magnified image of the sample down to atomic resolution. Measuring the loss of energy of these electrons in a scanning mode gives information on the composition of the material point by point.

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Transmission electron microscope used in cryomicroscopy for studying biological specimens.
(B. Rajau, Photothèque CNRS)