Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session D39: 2D Materials: Formation Pathways and Mechanisms, Heterostructures and Defects II
3:00 PM–6:00 PM,
Monday, March 6, 2023
Room: Room 231
Sponsoring
Unit:
DMP
Chair: Stephen McDonnell, University of Virginia; Stephan Hofmann, University of Cambridge
Abstract: D39.00006 : Probing electron beam induced effects at the single atom and defect level*
4:24 PM–4:36 PM
Presenter:
Kevin M Roccapriore
(Oak Ridge National Laboratory)
Authors:
Kevin M Roccapriore
(Oak Ridge National Laboratory)
Maxim Ziatdinov
(Oak Ridge National Lab)
Matthew Boebinger
(Oak Ridge National Laboratory)
Ondrej Dyck
(Oak Ridge National Laboratory)
Ayana Ghosh
(Oak Ridge National Lab)
Raymond Unocic
(Oak Ridge National Laboratory)
Sergei V Kalinin
(University of Tennessee)
In order to realize this, fast and accurate extraction of atomic coordinates from image data is required, followed by control of the electron beam in relation to those coordinates. The extraction of coordinates has not been reliable or fast enough for live operation using standard blob detection or even neural networks, however here we utilize deep ensembles to robustly predict atom coordinates on the order of milliseconds. Given this, we then position the electron beam to selectively remove single atoms or create single defects from the system with extreme precision. This is demonstrated in both graphene and MoS2.
*This research is sponsored by the INTERSECT Initiative as part of the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the US Department of Energy under contract DE-AC05-00OR22725. This research used resources of the Center for Nanophase Materials Sciences, which is a DOE Office of Science User Facility.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700