Video of World's Tiniest Sandwich (VIDEO)

Northwestern University

Caption

A rotating view of the "world's tiniest sandwich." Magnesium ions (magenta) form two layers on either side of the enamel crystallite's core, just 6 billionths of a meter across. Sodium (turquoise) and fluorine (blue) also are represented in the video created from data acquired by atom probe tomography.

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Northwestern University

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