Magnesium Sandwich (IMAGE)

Northwestern University

Magnesium Sandwich

Caption

Two views of the "world's tiniest sandwich" (with scalebar). The left panel shows the magnesium (magenta) sandwich at the enamel crystallite's core from data acquired by atom probe tomography. The right panel shows an atomic resolution scanning transmission electron microscopy image of an enamel crystallite looking down the long axis of the crystal. The dark areas are distortions in the crystal lattice due to the presence of impurities such as magnesium and sodium, identified by atom probe tomography (left panel).

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Northwestern University

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