6533b7d9fe1ef96bd126ccc7
RESEARCH PRODUCT
Stability limits of elemental 2D metals in graphene pores
Janne NevalaitaPekka Koskinensubject
Nanostructurestability limitsFOS: Physical sciences02 engineering and technologyelemental 2D metals010402 general chemistry01 natural sciencesStability (probability)law.inventionMetalgraphene poresnanorakenteetSemi-empirical mass formulalawMesoscale and Nanoscale Physics (cond-mat.mes-hall)MonolayergrafeeniGeneral Materials SciencemetallitPhysicsCondensed Matter - Mesoscale and Nanoscale PhysicsGraphenetiheysfunktionaaliteoria021001 nanoscience & nanotechnology0104 chemical sciencesTemplateChemical physicsvisual_artvisual_art.visual_art_medium0210 nano-technologyMetal clustersdescription
Two-dimensional (2D) materials can be used as stabilizing templates for exotic nanostructures, including pore-stabilized, free-standing patches of elemental metal monolayers. Although these patches represent metal clusters under extreme conditions and are thus bound for investigations, they are poorly understood as their energetic stability trends and the most promising elements remain unknown. Here, using density-functional theory simulations and liquid drop model to explore the properties of 45 elemental metal candidates, we identify metals that enable the largest and most stable patches. Simulations show that pores can stabilize patches up to $\sim 8$ nm$^2$ areas and that the most prominent candidate in a graphene template is Cu. The results, which are generalizable to templates also beyond graphene, provide encouragement for further, even more resolute experimental pursuit of 2D metals.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-01-01 |