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Implantation and atomic scale investigation of self-interstitials in graphene
Ossi Lehtinen, Nilesh Vats, Gerardo Algara-Siller +2
Crystallographic defects play a key role in determining the properties of crystalline materials. The new class of two-dimensional materials, foremost graphene, have enabled atomica…
Numerical correction of anti-symmetric aberrations in single HRTEM images of weakly scattering 2D-objects
Ossi Lehtinen, Dorin Geiger, Zhongbo Lee +4
Here, we present a numerical post-processing method for removing the effect of anti-symmetric residual aberrations in high-resolution transmission electron microscopy (HRTEM) image…
The pristine atomic structure of MoS2 monolayer protected from electron radiation damage by graphene
Gerardo Algara-Siller, Simon Kurasch, Mona Sedighi +2
Materials can, in principle, be imaged at the level of individual atoms with aberration corrected transmission electron microscopy. However, such resolution can be attained only wi…
Two-dimensional transition metal dichalcogenides under electron irradiation: defect production and doping
Hannu-Pekka Komsa, Jani Kotakoski, Simon Kurasch +3
Using first-principles atomistic simulations, we study the response of atomically-thin layers of transition metal dichalcogenides (TMDs) - a new class of two-dimensional inorganic…
Cutting and controlled modification of graphene with ion beams
O. Lehtinen, J. Kotakoski, A. V. Krasheninnikov +1
Using atomistic computer simulations, we study how ion irradiation can be used to alter the morphology of a graphene monolayer by introducing defects of specific type, and to cut g…