Dresden 2020 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 29: Poster: 2D Materials and their Heterostructures

DS 29.8: Poster

Mittwoch, 18. März 2020, 15:00–18:00, P1A

Scanning-probe-induced assembling of gold striations on mono- and bi-layered MoS2 on SiO2Felix Trillitzsch1, Arkadiusz Janas2, Alper Özogul1, Christof Neumann1, Antony George1, Benedykt R. Jany2, Franciszek Krok2, Andrey Turchanin1, and •Enrico Gnecco11Friedrich Schiller University Jena, Jena, Germany — 2Jagiellonian University, Krakow, Poland

Single crystal Au clusters have been collectively manipulated on mono- and bi-layered MoS2 islands grown on SiO2 using AFM. On the monolayer the clusters tend to move in a direction corresponding to the zigzag alignment of the Mo and S atoms, and to assemble into long stripes parallel to the scan direction. A detailed observation based on SEM shows that within each stripe the clusters remain separated by gaps of few nm in width possibly caused by electrostatic repulsion and/or the substrate roughness. The stripes also proved to be thermally stable, preserving their superstructures up to 823 K. On the bilayer gold clusters are less prone to move and assemble. Our results suggest that the formation of nanostructures from collective manipulation of metal clusters can be guided by a properly chosen scan path in a rather straightforward way.

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