Journal
APPLIED PHYSICS LETTERS
Volume 100, Issue 15, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3701598
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- U.K. Engineering and Physical Sciences Research Council (EPSRC)
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Using aberration-corrected scanning transmission electron microscope and energy dispersive x-ray spectroscopy, single, isolated impurity atoms of silicon and platinum in monolayer and multilayer graphene are identified. Simultaneously acquired electron energy loss spectra confirm the elemental identification. Contamination difficulties are overcome by employing near-UHV sample conditions. Signal intensities agree within a factor of two with standardless estimates. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3701598]
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