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Scanning transmission electron microscopy under controlled low-pressure atmospheres
Gregor T. Leuthner, Stefan Hummel, Clemens Mangler +4
Transmission electron microscopy (TEM) is carried out in vacuum to minimize the interaction of the imaging electrons with gas molecules while passing through the microscope column.…
Influence of temperature on the displacement threshold energy in graphene
Alexandru I. Chirita Mihaila, Toma Susi, Jani Kotakoski
The atomic structure of nanomaterials is often studied using transmission electron microscopy. In addition to image formation, the energetic electrons may also cause damage while i…
Direct visualization of the 3D structure of silicon impurities in graphene
Christoph Hofer, Viera Skakalova, Mohammad Reza Ahmadpour Monazam +4
We directly visualize the three-dimensional (3D) geometry and dynamics of silicon impurities in graphene as well as their dynamics by aberration-corrected scanning transmission ele…
Intrinsic core level photoemission of suspended graphene
Toma Susi, Mattia Scardamaglia, Kimmo Mustonen +11
X-ray photoelectron spectroscopy of graphene is important both for its characterization and as a model for other carbon materials. Despite great recent interest, the intrinsic phot…
Revealing the 3D Structure of Graphene Defects
Christoph Hofer, Christian Kramberger, Mohammad Reza Ahmadpour Monazam +5
We demonstrate insights into the three-dimensional structure of defects in graphene, in particular grain boundaries, obtained via a new approach from two transmission electron micr…
Nanopore fabrication and characterization by helium ion microscopy
D. Emmrich, A. Beyer, A. Nadzeyka +4
The Helium Ion Microscope (HIM) has the capability to image small features with a resolution down to 0.35 nm due to its highly focused gas field ionization source and its small bea…