While Marvel fans have waited a year to see Captain America, the scientific possibilities presented in the film are equally worthy of anticipation. From the real capabilities of nanotechnology to the validity of quantum reality, we asked three researchers at Ewha University Quantum Nanoscience Center to provide their expertise on some of the movie’s scientific elements.
Theory Workshop "Quantum Spins at the Nanoscale" Date: May 27 - 30, 2019 Location: Center for Quantum Nanoscience at Ewha Womans University in Seoul, South
Theory Workshop “Quantum Spins at the Nanoscale”
Date: May 27 – 30, 2019
Location: Center for Quantum Nanoscience at Ewha Womans University in Seoul, South Korea
The workshop Quantum Spins at the Nanoscale: Recent Theoretical Advances will bring together international experts in the field of Quantum Nanoscience in Ewha Womans University (Korea) between May 27th and 30th 2019 to stimulate discussion and foster collaborations about emerging physics of Quantum Systems from a theoretical perspective.
The workshop Quantum Spins at the Nanoscale: Recent Theoretical Advances will focus on recent developments in the study of open quantum spin systems at the nanoscale where coherence, interactions and topology play an important role.
With the recent development of quantum materials and spin control, it becomes possible to emulate and reveal new complex and intriguing quantum phenomena both at equilibrium but also in the non-equilibrium by driving the systems. Quantum spin control also allows to address fundamental issues related to quantum information theory and spin-based quantum computing.
27 (Monday) 9:00 am - 30 (Thursday) 6:00 pm KST
Karsten Reuter Academic Affiliation: Technische Universität München Prof. Reuter’s (b. 1970) research activities are mainly focused on quantitative modeling of material
Academic Affiliation: Technische Universität München
Prof. Reuter’s (b. 1970) research activities are mainly focused on quantitative modeling of material properties and functionalities. Heterogeneous catalysis is a particular area of interest. He makes widespread use of modern multiscale modeling, which unites methods and concepts from the disciplines of physics and chemistry as well as materials science and engineering.
Talk: June 4, 2019
Knowledge-Based Approaches in Catalysis and Energy Modelling
Reflecting the general data revolution, knowledge-based methods are now also entering theoretical catalysis and energy related research with full might. Automatized workflows and the training of machine learning approaches with first-principles data generate predictive-quality insight into elementary processes and process energetics at undreamed-of pace. Computational screening and data mining allows to explore these data bases for promising materials and extract correlations like structure-property relationships. At present, these efforts are still largely based on highly reductionist models that break down the complex interdependencies of working catalyst and energy conversion systems into a tractable number of so-called descriptors, i.e. microscopic parameters that are believed to govern the macroscopic function. For certain classes of materials like transition metal catalysts, corresponding human-designed models have indeed established trend understanding and spurred a targeted materials design. Future efforts will concentrate on using artificial intelligence also in the actual generation and reinforced improvement of the reductionist models. This is expected to better capture complexities like incomplete understanding or operando changes of interfacial morphology, to provide access to structured and compound materials classes, or ultimately to even fulfill the dream of an inverse (de novo) design from function to structure. In this talk, I will briefly survey these developments, providing examples from our own research, in particular on adsorption energetics at bimetallic catalysts and data mining for the design of organic semiconductors.
Information about talk place will be updated soon
(Tuesday) 4:00 pm - 5:00 pm
Karina Morgenstern Academic Affiliation: Ruhr-Universität Bochum Research area: Surface Science Visit Dates: June 5, 2019 STM investigation of laser driven processes at surfaces While photochemistry
Academic Affiliation: Ruhr-Universität Bochum
Research area: Surface Science
Visit Dates: June 5, 2019
STM investigation of laser driven processes at surfaces
While photochemistry in the gas phase demands a resonant excitation of the molecules, the presence of a metal surface in surface chemistry opens a different pathway via the creation of hot electrons in the metal and subsequent attachment of these energetic electrons to adsorbed molecules. We use two set-ups that combine a low-temperature scanning tunneling microscope operating below 10 K with a frequency doubled femto-second laser and a tunable pico-second laser, respectively, to investigate processes induced by these electrons on a single molecule basis.
In this talk, I will first present recent results on the effect of intense fs-laser illumination on the structure of metal surfaces, in particular Ag(100) and Cu(111). Then I will compare laser-induced diffusion to thermal diffusion of CO molecules on Cu(111). In particular the long-range interaction between diffusing molecules differs in the two cases. Finally, I will present results obtained by electrons attaching to and solvating in different ice structures adsorbed on Cu(111) without and with halogenated (chlorine or bromine) benzene molecules adsorbed on them. These model systems enhance our understanding of the impact of ionizing radiation on the chemical composition of Earth’s upper atmosphere (e.g. its ozone density), which is known to trigger chemical processes at the surfaces of cold ice covered grain particles.
Information about talk place will be updated soon
(Wednesday) 11:00 am - 12:00 pm
Probing the magnetic properties of ultrathin Pt/Mn bilayers
Wafer-scale single-crystal hexagonal boron nitride film via self-collimated grain formation
Enhanced quantum coherence in exchange coupled spins via singlet-triplet transitions
Electrically controlled nuclear polarization of individual atoms
Hyperfine interaction of individual atoms on a surface
Interface morphology effect on the spin mixing conductance of Pt/Fe3O4 bilayers