Projects per year
Abstract
Quantitatively calibrated annular dark field scanning transmission electron microscopy (ADF-STEM) imaging experiments were compared to frozen phonon multislice simulations adapted to include chemical bonding effects. Having carefully matched simulation parameters to experimental conditions, a depth-dependent bonding effect was observed for high-angle ADF-STEM imaging of aluminum nitride. This result is explained by computational predictions, systematically examined in the preceding portion of this study, showing the propagation of the converged STEM beam to be highly sensitive to net interatomic charge transfer. Thus, although uncertainties in experimental conditions and simulation accuracy remain, the computationally predicted experimental bonding effect withstands the experimental testing reported here.
Original language | English (US) |
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Article number | 041603 |
Journal | Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films |
Volume | 34 |
Issue number | 4 |
DOIs | |
State | Published - Jul 1 2016 |
Bibliographical note
Publisher Copyright:© 2016 American Vacuum Society.
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Dive into the research topics of 'Atomic bonding effects in annular dark field scanning transmission electron microscopy. II. Experiments'. Together they form a unique fingerprint.Projects
- 2 Finished
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University of Minnesota MRSEC (DMR-1420013)
Lodge, T. P. (PI)
11/1/14 → 10/31/20
Project: Research project
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MRSEC IRG-2: Sustainable Nanocrystal Materials
Kortshagen, U. R. (Coordinator), Aydil, E. S. (Senior Investigator), Campbell, S. A. (Senior Investigator), Francis, L. F. (Senior Investigator), Haynes, C. L. (Senior Investigator), Hogan, C. (Senior Investigator), Mkhoyan, A. (Senior Investigator), Shklovskii, B. I. (Senior Investigator) & Wang, X. (Senior Investigator)
11/1/14 → 10/31/20
Project: Research project