HRTEM Techniques Applied To Nanocrystal
Modeling: Towards An \“atom-by-atom”
Description
Author(s)
D. G. Stroppa, L. A. Montoro, E. R. Leite & A. J. Ramirez
Abstract
The development of technologies based on nanostructures presents a wide range
of challenges for materials scientists and engineers, including the attainment of
well-controlled synthesis procedures, the improvement of characterization
techniques down to the atomic scale resolution, and the conception and
validation of reliable models that can describe materials properties as functions
of their morphology and fabrication process. A relevant topic in this scenario is
the correlation among the spatial distribution of chemical elements, the surface
energy configuration, the growth mechanism, and the resultant nanocrystal 3D
morphology.
This work presents an overview on the use of advanced HRTEM techniques
for the quantitative analysis of nanocrystals and how these results can be used to
implement nanocrystals models, which can analytically describe the material
features on an atomic level. The presented findings show the combined use of
experimental data and theoretical tools, such as image simulation and ab initio
surface energy calculations, for the advanced quantitative characterization of
nanocrystalline systems.
The combination of experimental and theoretical efforts on HRTEM
characterization represents a powerful tool for the nanocrystal 3D morphology
elucidation with atomic resolution and the chemical/structural properties
assessment in a quantitative way. Thereby, it is presented as the stepping stone
towards the development of novel approaches to describe nanostructured
systems.
Keywords: HRTEM, nanocrystals modeling, quantitative analysis.
Keywords
HRTEM, nanocrystals modeling, quantitative analysis
Related Book
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