Regensburg 2025 – scientific programme

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MM: Fachverband Metall- und Materialphysik

MM 21: Interface Controlled Properties, Nanomaterials and Microstructure Design

MM 21.10: Talk

Wednesday, March 19, 2025, 18:00–18:15, H22

Friction coefficient and work function investigation of transition-metal dichalcogenide — •Malik Al naabi, Shuyu Huang, Antoine Hinaut, Ernst Meyer, and Thilo Glatzel — University of Basel, Basel, Switzerland

Despite extensive research on the tribological properties of MoS2,the frictional characteristics and electronic properties of other members of the transition-metal dichalcogenide (TMD) family have remained relatively unexplored. To understand the effect of the chalcogen on the tribological behavior of these materials and gain broader general insights into the factors controlling friction at the nanoscale, we compared the friction force behavior for a nanoscale single asperity sliding on MoS2, MoSe2, WS2, and WSe2, in bulk using friction force microscopy (FFM). Additionally, we used Kelvin probe force microscopy (KPFM) to investigate the work function. All the materials were cleaved in the nitrogen glovebox.

Keywords: Friction force microscopy (FFM); Kelvin probe force microscopy (KPFM); transition-metal dichalcogenide (TMD); Friction coefficient; work function