Imaging and dynamics of light atoms and molecules on graphene

@article{Meyer2008ImagingAD,
  title={Imaging and dynamics of light atoms and molecules on graphene},
  author={Jannik C. Meyer and Çaǧlar Girit and Michael F. Crommie and Alex Zettl},
  journal={Nature},
  year={2008},
  volume={454},
  pages={319-322}
}
Observing the individual building blocks of matter is one of the primary goals of microscopy. The invention of the scanning tunnelling microscope revolutionized experimental surface science in that atomic-scale features on a solid-state surface could finally be readily imaged. However, scanning tunnelling microscopy has limited applicability due to restrictions in, for example, sample conductivity, cleanliness, and data acquisition rate. An older microscopy technique, that of transmission… 
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References

SHOWING 1-10 OF 57 REFERENCES
Direct evidence for atomic defects in graphene layers
TLDR
Observations in situ of defect formation in single graphene layers by high-resolution TEM are reported and are expected to be of use when engineering the properties of carbon nanostructures for specific device applications.
Atomic-scale imaging of individual dopant atoms and clusters in highly n-type bulk Si
TLDR
Using annular dark-field scanning transmission electron microscopy, the direct, atomic-resolution observation of individual antimony (Sb) dopant atoms in crystalline Si is reported, and the size, structure, and distribution of these clusters are identified, responsible for the saturation of charge carriers.
Scanning tunneling microscopy fingerprints of point defects in graphene : A theoretical prediction
Scanning tunneling microscopy (STM) is one of the most appropriate techniques to investigate the atomic structure of carbon nanomaterials. However, the experimental identification of topological and
Direct Imaging of the Atomic Configuration of Ultradispersed Catalysts
Direct imaging of individual catalyst metal atoms on the insulating surface of an industrial support is demonstrated. Individual platinum and rhodium atoms ultradispersed on γ-Al2O3 supports were
Imaging active topological defects in carbon nanotubes.
TLDR
It is demonstrated here, by means of high-resolution (HR)-TEM with atomic sensitivity, the first direct imaging of pentagon-heptagon pair defects found in an SWNT that was heated at 2,273 K, which suggests that dislocation motions or active topological defects are indeed responsible for the plastic deformation of SWNTs.
The structure of suspended graphene sheets
TLDR
These studies by transmission electron microscopy reveal that individual graphene sheets freely suspended on a microfabricated scaffold in vacuum or air are not perfectly flat: they exhibit intrinsic microscopic roughening such that the surface normal varies by several degrees and out-of-plane deformations reach 1 nm.
Atomic-Resolution Imaging of Oxygen in Perovskite Ceramics
Using an imaging mode based on the adjustment of a negative value of the spherical-aberration coefficient of the objective lens of a transmission electron microscope, we successfully imaged all types
Three-dimensional imaging of individual hafnium atoms inside a semiconductor device
The aberration-corrected scanning transmission electron microscope allows probes to be formed with less than 1-A diameter, providing sufficient sensitivity to observe individual Hf atoms within the
Transmission electron microscopy imaging of individual functional groups of fullerene derivatives.
TLDR
Mobility and reactivity of the functionalized fullerenes with pyrrolidine incorporated in single-wall carbon nanotubes were examined and a fine structure analysis of electron energy-loss spectra shows a considerable change in the nitrogen chemical state and suggests a strong tube-fullerene interaction.
Imaging the dynamic behaviour of individual retinal chromophores confined inside carbon nanotubes.
TLDR
This work obtain atomically resolved images of individual structural isomers of the retinal chromophore attached to C60 molecules and study their dynamic behaviour inside a confined space--that is, inside single-walled carbon nanotubes--using high-resolution transmission electron microscopy (HR-TEM).
...
1
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5
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