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Calendar of Physics Talks Vienna
| Structure and dynamics of water at interfaces: “Surfing” water droplets and ice formation |
| Speaker: | Angelos Michaelides (Thomas Young Centre, University College London, UK) |
| Abstract: | Water/solid interfaces are relevant to a broad range of physicochemical phenomena and technological processes such as corrosion, lubrication, heterogeneous catalysis and electrochemistry (Nature Mater 11, 667 (2012)). In this talk some of our recent computer simulation work in this area will be covered. Specifically results on water droplet diffusion on the surfaces of layered materials will be presented and a novel “surfing” mechanism for droplet diffusion discussed (Nature Mater, in press). In addition, simulations of ice nucleation on various nanoparticles with different physiochemical characteristics will be presented and the fundamental insight obtained from these into heterogeneous ice nucleation discussed (J. Am. Chem Soc., in press). Time permitting some recent ab initio molecular dynamics results at wet interfaces in which rapid proton transfer is observed will also be discussed. |
| Date: | Mon, 16.11.2015 |
| Time: | 17:30 |
| Location: | TU Wien-Freihaus, Hörsaal 5, 2. Stock, grüner Bereich |
| Contact: | Prof. Diebold |
| Optical super-resolution microscopy - deeper insights into membrane bioactivity |
| Speaker: | Prof. Christian Eggeling (MRC Human Immunology Unit & Wolfson Imaging Centre Oxford, Weatherall Institute of Molecular Medicine, University of Oxford, Headley Way, Oxford, OX3 9DS, United Kingdom, christian.eggeling@rdm.ox.ac.) |
| Abstract: | Molecular interactions in the plasma membrane of living cells are key in cellular
signalling. Protein-protein or protein-lipid complexes, the formation of lipid
nanodomains (often denoted “rafts”), or diffusional restrictions by the cortical
cytoskeleton are considered to play a functional part in a whole range of
membrane-associated processes. The direct and non-invasive observation of
such interactions in living cells is often impeded by principle limitations of
conventional far-field optical microscopes, specifically with respect to limited
spatio-temporal resolution. We present how novel details of molecular
membrane dynamics can be obtained by using advanced microscopy
approaches such as the combination of super-resolution STED microscopy
with fluorescence correlation spectroscopy (STED-FCS). We will focus on new
insights into the lipid “raft” theory, and on the role of plasma membr |
| Date: | Tue, 17.11.2015 |
| Time: | 16:00 |
| Location: | Technische Universität Wien, Institut für Angewandte Physik, E134 yellow tower „B“, 5th floor, Seminarraum 134A (room number DB05L03) 1040 Wien, Wiedner Hauptstraße 8-10 |
| Contact: | Prof. Dr. Gerhard Schütz |
| Sterile neutrino oscillation with altered dispersion relations in cosmology and astrophysics |
| Speaker: | Elke Aeikens (Univ. Wien) |
| Abstract: | im Rahmen des Teilchenphysikseminars |
| Date: | Tue, 17.11.2015 |
| Time: | 16:15 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock |
| Contact: | A. Hoang, W. Grimus |
| Transition to turbulence in pipe flow |
| Speaker: | Prof. Dr. Björn Hof |
| Abstract: | Hof.pdf |
| Date: | Tue, 17.11.2015 |
| Time: | 17:30 |
| Duration: | 60 min |
| Location: | Lise-Meitner Hörsaal (ehemal. Großer Hörsaal der Experimentalphysik), Universität Wien
1090 Wien, Strudlhofgasse 4 / Boltzmanngasse 5 |
| Contact: | Christl.Langstadlinger@univie.ac.at |
| High-accuracy methods for black-hole perturbations: quasi-normal-modes filtering |
| Speaker: | Marcus Ansorg (Jena) |
| Abstract: | Im Rahmen des Literaturseminars: In this talk I will present a spectral decomposition of solutions to relativistic wave equations on a given Schwarzschild-black-hole background. To this end, the wave equation is Laplace-transformed which leads to a spatial differential equation with a complex parameter. This equation is treated in terms of a sophisticated Taylor series analysis. Thereby, all ingredients of the desired spectral decomposition arise explicitly, including quasi normal modes, quasi normal mode amplitudes and the jump along the branch cut. Finally, all contributions are put together to obtain via the inverse Laplace transformation the spectral decomposition in question. |
| Date: | Thu, 19.11.2015 |
| Time: | 14:00 |
| Duration: | 60 min |
| Location: | Arbeitsgruppe Gravitation, Währinger Strasse 17, Seminarraum, 5. Stock, 1090 Wien |
| Contact: | P.T. Chrusciel |
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