SKM 2023 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 4: Tribology: Surfaces and Nanostructures
O 4.8: Vortrag
Montag, 27. März 2023, 12:15–12:30, GER 37
Screw-like beetle joints and their tribological features — •Cornelia F. Pichler1, Richard Thelen1, Thomas van de Kamp2, and Hendrik Hölscher1 — 1Institute of Microstructure Technology (IMT), Karlsruhe Institute of Technology, Karlsruhe, Germany — 2Institute for Photon Science and Synchrotron Radiation (IPS), Karlsruhe Institute of Technology, Karlsruhe, Germany
Understanding and finally mimicking lubricants in the joints of various insects promises environmentally friendly alternatives for mineral-oil-based lubricants. The compactness of the insect joints and the tiny quantities of their respective lubricants make it challenging to analyze their frictional properties. In my work, I characterize lubricants directly in dissected screw-like beetle joints by lateral force measurements with the atomic force microscope (AFM). This approach gives insight into the frictional properties of the lubricant in its natural form as well as the functional structure found in the joints. In addition to lubricant films, we also observe microstructures which suggest that beetles advance frictional properties of their joints by a sophisticated combination of surface structure and lubrication.