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Calcium islands

Calcium islands

A150/0266

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Credit

COLIN CUTHBERT / SCIENCE PHOTO LIBRARY COLIN CUTHBERT / SCIENCE PHOTO LIBRARY

Caption

Calcium islands. Coloured atomic force micrograph (AFM) of calcium islands (light blue dots) on the surface of a calcium fluoride crystal. The islands were made using electrons from a very hot filament. The electrons eject the fluorine from the surface of the crystal. The remaining calcium atoms join into these 20 nanometre-wide islands. The sample was scanned by moving a spring-loaded "stylus" over it. Magnification unknown.

Release details

Model release not required. Property release not required.

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