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15 September 2009 These are the first images of a carbon atom's electron clouds, showing several arrangements of the clouds (in blue) as they orbit the nucleus. The images were captured by Igor Mikhailovskij's team at the Kharkov Institute of Physics and Technology, Ukraine. The team unravelled a sheet of graphene ¨C a one-atom-thick lattice of carbon atoms ¨C to create a carbon-atom chain, which they put in a vacuum at 4.2 kelvin. They then ran 425 volts through the carbon, causing the atom at the tip to emit electrons onto a phosphor screen and produce the image. The study will be published in Physical Review B Image: APS/Kharkov Institute of Physics and Technology http://www.newscientist.com/gallery/dn15018-pick-of-the-pictures/2 |
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