Nanostructures for better implants Researchers from the SNI network investigated how nanostructured titanium surfaces can improve dental implants. The interdisciplinary team tested the viability of osteoblasts and 昀椀broblasts and controlled how di昀昀er- ent bacterial strains colonize the modi昀椀ed surfaces. Their results were published in December 2024 in the print edition of the Journal of Biomedical Materials Research. SNI Post: https://nanoscience.unibas.ch/de/news/details/nanostrukturen-fuer-bessere-implan- tate/ Video: https://youtu.be/9yRkvlNvL2w In the Nano-Argovia project TiSpikes, researchers investigated how Original publication: nanostructured titanium surfaces improve the properties of dental im- https://onlinelibrary.wiley.com/doi/10.1002/jbm.a.37768 plants. (Image: Department of Physics, University of Basel) Reversal of magnetism through stretching Ribbons of the two-dimensional semiconductor chromi- um sulfur bromide (CrSBr) change their magnetization when stretched. Researchers from the SNI network re- cently published in the scienti昀椀c journal Nano Letters how they selectively stretch thin CrSBr ribbons of a few atomic layers and observe them using a cantilever probe with an integrated superconducting quantum interfer- ence device (SQUID). The researchers were able to show that the layered, two-dimensional CrSBr loses its antifer- romagnetic properties due to stretching and becomes a ferromagnet. The researchers reproduced this change in magnetization and domain formation using a micromag- netic model. Magnetic 昀椀eld dependence of a strained chromium sulfur bromide rib- bon (Image: Department of Physics, University of Basel) SNI post: https://nanoscience.unibas.ch/en/news/details/umkehrung-des-magnetismus-durch-deh- nung/ Original publication: https://doi.org/10.1021/acs.nanolett.4c03919 Control of skyrmions possible Using scanning SQUID microscopy at very low tempera- tures, researchers from the SNI network have visualized the microscopic structure of the magnetic phases and their transitions on the surface of the insulator Cu OSeO . 2 3 The researchers observed that under certain conditions, the surface is populated by clusters of disordered mag- netic vortex structures (skyrmions), whereby individual skyrmions could be controlled locally. SNI post: https://nanoscience.unibas.ch/en/news/details/kontrolle-von-skyrmionen-moeglich/ Using scanning SQUID microscopy at very low temperatures, research- Original publication: ers have visualized the microscopic structure of the magnetic phases https://www.nature.com/articles/s43246-024-00647-5 and their transitions on the surface of the insulator Cu OSeO . (Image: 2 3 Department of Physics, University of Basel) SNI INSight December 2024 27