CALL FOR PROPOSALS FOR THE DIRECTOR'S FUND PROJECTS 2020 - Call
In a paper, published in Physical Review X, Simon Čopar, Jure Aplinc, Žiga Kos, Slobodan Žumer and Miha Ravnik ( Department of Physics UL-FMF, Department of Solid-state Physics IJS), present the first numerical study of the topology of three-dimensional active nematic turbulence in a spherical confinement. Simulations were performed using a mesoscopic model of active nematic fluids, which are most commonly used to describe biological systems driven by internal conversion of stored energy (usually chemical) into motion. The chaotic motion in the active turbulence was explained by elementary topological events that affect defect lines appearing in such systems. Additionally, a coupling of surface and bulk dynamics through defects was demonstrated.
Sustainable Industrial Processing Summit (SIPS 2019) took place in Cyprus from 23th to 26th of October 2019. A special symposium was organized in honor of the distinguished work and lifetime achievements of prof. Spomenka Kobe from the Department of nanostructured materials, who is well known in the area of magnetic materials. At this conference, Dr. Nina Kostevšek was awarded the Wüthrich International Young Star Award for the outstanding performances during the early career stages. This award has been established in honour of the distinguished work and lifetime achievements of 2002 Nobel Laureate in Chemistry, Prof. Kurt Wüthrich, who is known for developing the NMR method for studying macrobiological molecules. Dr. Nina Kostevšek presented work on the development of new nanoparticle-based contrast agents for magnetic resonance imaging.
Matjaž Gomilšek, Martin Klanjšek, Matej Pregelj and Andrej Zorko from the Solid State Physics Department and Rok Žitko from the Department of Theoretical Physics at the “Jožef Stefan” Institute, in collaboration with researchers from Switzerland and China, have published the paper Kondo screening in a charge-insulating spinon metal in Nature Physics. The Kondo effect where conduction electrons screen the local moments of magnetic impurities is well known to occur in ordinary metals. Here, the researchers have shown that an analogous phenomenon is possible also in electric insulators, in particular, in a quantum spin liquid with magnetic spinon excitations forming a Fermi surface. This discovery could be important for manipulating topologically protected spin-liquid states in quantum computing.