Titel
Engineering single-atom dynamics with electron irradiation
Autor*in
Cong Su
Department of Nuclear Science and Engineering and Department of Materials Science and Engineering, Massachusetts Institute of Technology
Qing-Bo Yan
College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences
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Abstract
Atomic engineering is envisioned to involve selectively inducing the desired dynamics of single atoms and combining these steps for larger-scale assemblies. Here, we focus on the first part by surveying the single-step dynamics of graphene dopants, primarily phosphorus, caused by electron irradiation both in experiment and simulation, and develop a theory for describing the probabilities of competing configurational outcomes depending on the postcollision momentum vector of the primary knock-on atom. The predicted branching ratio of configurational transformations agrees well with our atomically resolved experiments. This suggests a way for biasing the dynamics toward desired outcomes, paving the road for designing and further upscaling atomic engineering using electron irradiation.
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
Erschienen in
Titel
Science Advances
Band
5
Ausgabe
5
ISSN
2375-2548
Erscheinungsdatum
2019
Publication
American Association for the Advancement of Science (AAAS)
Erscheinungsdatum
2019
Zugänglichkeit
Rechte
Rechteangabe
© 2019 The Authors
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