JAMES KING-HOLMES / SCIENCE PHOTO LIBRARY JAMES KING-HOLMES / SCIENCE PHOTO LIBRARY
Malcolm Green. British chemist Malcolm Green (born 1936) peers through a molecular model of a carbon nanotube. Green is professor of chemistry at Oxford University's catalysis centre and co- inventor of nanomagnets - the smallest bar magnets in the world. Nanotubes are molecule-sized hollow cylinders whose walls consist of sheets of carbon atoms arranged in linked hexagons. Green and colleagues made nanomagnets from nanotubes by opening their ends and introducing a single crystal of magnetised nickel through a series of chemical reactions. The tubes could lead to the development of microscopic circuits little bigger than molecules. Photographed in Oxford, 1995.
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