Free-standing 2D metals from binary metal alloys
Abstract
Recent experiments have demonstrated the formation of free-standing Au monolayers by exposing the Au–Ag alloy to electron beam irradiation. Inspired by this discovery, we used semi-empirical effective medium theory simulations to investigate monolayer formation in 30 different binary metal alloys composed of late d-series metals such as Ni, Cu, Pd, Ag, Pt, and Au. In qualitative agreement with the experiment, we find that the beam energy required to dealloy Ag atoms from the Au–Ag alloy is smaller than the energy required to break the dealloyed Au monolayer. Our simulations suggest that a similar method could also be used to form Au monolayers from the Au–Cu alloy and Pt monolayers from Pt–Cu, Pt–Ni, and Pt–Pd alloys.
Main Authors
Format
Articles
Research article
Published
2020
Series
Subjects
Publication in research information system
Publisher
American Institute of Physics
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-202007015188Käytä tätä linkitykseen.
Review status
Peer reviewed
ISSN
2158-3226
DOI
https://doi.org/10.1063/5.0010884
Language
English
Published in
AIP Advances
Citation
- Nevalaita, J., & Koskinen, P. (2020). Free-standing 2D metals from binary metal alloys. AIP Advances, 10(6), Article 065327. https://doi.org/10.1063/5.0010884
License
Funder(s)
Research Council of Finland
Funding program(s)
Academy Project, AoF
Akatemiahanke, SA
Additional information about funding
This work was supported by the Academy of Finland (Project No. 297115).
Copyright© 2020 Author(s).