Calcium islands

Calcium islands

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Credit: 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.

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Keywords: afm, atomic force micrograph, atomic structure, blue, calcium islands, chemical, chemistry, element, elements, fluoride crystal, particle physics, physics

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