BIOSYM TECHNOLOGIES, INC. / SCIENCE PHOTO LIBRARY BIOSYM TECHNOLOGIES, INC. / SCIENCE PHOTO LIBRARY
Superconducting fulleride: computer graphics representation of the surface of "potassium buckide" (K3C60), a crystal produced by doping C60 (Buckminsterfullerene) with potassium. K3C60 consists of a face centred cubic structure of Buckyballs (blue), with potassium ions (yellow) filling the cavities between the 'balls. In 1991, researchers at AT & T Bell Labs discovered that potassium buckide became superconducting when cooled below 18 K. C60 films have also been grown on gallium arsenide crystals, indicating possible applications in fabricating microelectronic circuits.
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