Tuesday, 10 September 2013

New technique efficiently resolves chemistry of nanoparticles

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(Phys.org) —A new technique from Pacific Northwest National Laboratory and FEI Company lets scientists efficiently resolve elements' locations in three dimensions. The team's technique combines scanning transmission electron microscopy and X-ray energy dispersive spectrometry with a new detector arrangement and a brighter electron beam. The result is a three-dimensional map of the elements' placement on a sample smaller than a single blood cell. The team applied this technique to a lithium-rich nickel-based material that could be part of tomorrow's batteries. They discovered how nickel was segregating away from other elements on the material's surface.



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