Boron-induced transformation of ultrathin Au films into two-dimensional metallic nanostructures
Alexei Preobrajenski, Nikolay Vinogradov, David A. Duncan, Tien-Lin Lee, Mikhail Tsitsvero, Tetsuya Taketsugu, Andrey Lyalin · 2024
Read Boron-induced transformation of ultrathin Au films into two-dimensional metallic nanostructures by Alexei Preobrajenski, Nikolay Vinogradov, David A. Duncan, Tien-Lin Lee, Mikhail Tsitsvero, Tetsuya Taketsugu, Andrey Lyalin (2024) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-11631948.txt.
Description
Making a metal sheet just one atom thick is hard, because metal bonds pull equally in all directions. Alexei Preobrajenski and co-authors find a way to grow nearly freestanding 2D gold layers. They form gold monolayers on an iridium surface, then slip boron atoms underneath, between the gold and its support.
The buried boron lifts the gold into suspended single-atom sheets patterned with tiny hexagons and triangles. On bilayers it produced regular fields of nanodots instead. Microscope images, X-ray spectra, and calculations together show the boron drives the patterning. Freed from the substrate, the gold's electronic bands shift to a truly 2D character. The films also survive heat well, which opens them to catalysis studies.
Catalog record
| CREATOR | Alexei Preobrajenski, Nikolay Vinogradov, David A. Duncan, Tien-Lin Lee, Mikhail Tsitsvero, Tetsuya Taketsugu, Andrey Lyalin |
|---|---|
| YEAR | 2024 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 64 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |