The journal Nature Communication has published the scientific work of Prof. Dr. Uroš Cvelbar and his colleagues from Korean university KAIST,The creation of electric wind due to the electrohydrodynamic force, where they unlocked the secret of electric wind origin. They report on direct evidence that the wind is generated by electrohydrodynamic force, which is caused by coupling of charged particles with neutrals. Coupling between these particles has a long history and is a popular scientific subject since it is supposed to be one of the basic mechanisms of natural phenomena including convection of ions and neutrals in planetary atmospheres and movement of neutrals in electric discharges. The direct evidence for this phenomena will probably improve fundamental knowledge on plasma, ranging from plasma processing, fusion, astrophysics to space propulsion.
One of the very first attempts to understand the charge dynamics in mixed-valence systems dates back to 1939 when Evert Verwey, a Dutch chemist, observed a sudden jump in resistivity near -150 °C in magnetite. In the journal Science Advances now a research team of scientists from Germany and Slovenia reports a Verwey-type transition in a completely different class of mixed-valence compounds, which is composed of negatively charged dioxygen molecules. The compound Cs4O6 undergoes a phase transition from a state with indistinguishable molecular O2x- entities to a state with well-defined superoxide O2- and peroxide O22-anions. The breakthrough of the present study is the observation of such charge ordering in a simple crystal structure where novel physical phenomena is expected to emerge from intertwining of degrees of freedom pertinent to electronically active oxygen molecular units.
The scientific paper entitled “Trading on Talent: Human Capital and Firm Performance“ by James Hodson (joint work with A. Fedyk), researcher within the BigDataFinance MSCA Training Network at Artificial Intelligence Laboratory and PhD student at the Jozef Stefan International PostGraduate School, is the winner of the Jack Treynor Prize from the Institute for Quantitative Research in Finance and received second place in the 2017 PanAgora Asset Management Dr. Richard A. Crowell Memorial Prize. Jack Treynor Prize recognizes superior academic working papers with potential applications in the fields of investment management and financial markets. Q Group awards prizes are usually won by well-established professors at world renowned universities.
Researchers from the Department for Complex Matter and Department for Synthesis of Materials, Jožef Stefan Institute, and Faculty of Mathematics and Physics, University of Ljubljana Peter Medle Rupnik, Darja Lisjak, Martin Čopič, Simon Čopar in Alenka Mertelj have studied the response of ferromagnetic chiral nematic liquid crystal to magnetic and electric fields. They described unique structural transitions of this material confined to a layer, which are not observed in the usual chiral nematic liquid crystals. The material is a liquid analog of a solid helimagnet. Its advantage is that in a liquid crystal magnetic structures can be easily manipulated with small external fields. The study was published in the paper Field-controlled structures in ferromagnetic cholesteric liquid crystals in the journal Science Advances.