Imaging of uranium atoms with the electron microscope by phase contrast

Parsons, J. R.; Johnson, H. M.; Hoelke, C.W.; Hosbons, R.R.

doi:10.1080/14786437308226892

Cited by 19 publications

(2 citation statements)

References 8 publications

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“…5k). 44,53 Prior to the development of aberration correctors it was difficult, although not impossible, 54,55 to monitor the behaviour of single atom contaminants in a specimen. However, with the successful isolation of few-layer graphene sheets it became possible to prepare almost ideal electron microscopy samples, 56 permitting the high-resolution imaging of material on the graphene surface.…”

Section: Adatoms Substitutions and Interstitialsmentioning

confidence: 99%

Atomic resolution imaging of graphene by transmission electron microscopy

2013

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The atomic structure of a material influences its electronic, chemical, magnetic and mechanical properties. Characterising carbon nanomaterials, such as fullerenes, nanotubes and graphene, at the atomic level is challenging due to their chemical reactivity and low atomic mass. Transmission electron microscopy and scanning probe microscopy are two of the leading methods for imaging graphene at the atomic level. Here, we report on recent advances in atomic resolution imaging of graphene using aberration-corrected high resolution transmission electron microscopy and how it has revealed many of the structural deviations from the pristine monolayer form. Structures in graphene such as vacancy defects, edges, grain boundaries, linear chains, impurity dopants, layer number, layer stacking and bond rotations are explored.

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Section: Adatoms Substitutions and Interstitialsmentioning

confidence: 99%

Atomic resolution imaging of graphene by transmission electron microscopy

2013

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“…Some of these claims were made by Crewe (1970Crewe ( a,b, 1974; Hashimoto (1971Hashimoto ( , 1974; Henkelman andOttensmeyer (1971, 1973); Formannek (1971); Baumeister and -4-and Hahn, (1973); and Parsons (1973Parsons ( , 1974. The justifications for atom images have mostly been based on the agreement between the experimental and theoretical contrast estimates and/or the agreement between the measured and the assumed distances of the heavy atoms in an organo-metallic compound.…”

Section: (D) Claims Of Single Atom Images and Shortcomings In The Evimentioning

confidence: 99%