Mitschnitt einer Veranstaltung der Österreichischen Chemisch-Physikalischen Gesellschaft am Dienstag, dem 19. Jänner 2016 im Lise Meitner-Hörsaal der Fakultät für Physik der Universtät Wien Es sprechen Ulrike Diebold (Technische Universität Wien) und Leticia González (Universität Wien) Moderation: Günther Allmaier (Präsident der Chemisch-Physikalischen Gesellschaft) Preisträger Zbynek Novotny spricht über "The Reconstructed Fe3O4(001) Surface as an Adsorption Template"; Preisträger Martin Richter über "Semiclassical Molecular Dynamics - A Modern Way to Connect Theory to Time-Resolved Experiments". Kamera: Gerlinde Fritz, Johannes Sauer, Daniel Winkler Schnitt: Daniel Winkler Abstract Novotny: Single atoms anchored to metal oxides offer great potential for achieving high activity and selectivity in heterogeneous catalysis. Unfortunately, supported metal atoms are generally not stable and tend to agglomerate to clusters already at fairly low temperatures (<300 K). In this talk, I will demonstrate the key findings from my graduate research: a discovery of a unique adsorption properties of the Fe3O4(001) - (√2×√2) surface and its ability to stabilize single metal atoms at temperatures as high as 700 K. The properties of single atoms of Fe, Au and Pd will be discussed. Finally, I will present a brief highlight of my current research at PNNL. Abstract Richter: Semiclassical molecular dynamics (MD) simulations have become an in dispensable tool for the investigation of photoinduced processes in molecular systems and can be used to follow femtosecond non-adiabatic relaxation processes in real time. Exemplarily, the ultrafast relaxation dynamics of pyrimidine nucleobases after UV excitation is presented. The combination of microscopic MD results with state of the art spectra simulation methodologies is discussed. INHALT ====== Kapitel Titel Position --------------------------------------------------------------------- 1. Vorspann 00:00:00 2. G. Allmaier: Begrüßung und Einleitung 00:00:13 3. U. Diebold: Laudatio für Zbynek Novotny 00:00:53 4. Z. Novotny: The surface of magnetite 00:02:50 5. Z. Novotny: Growth studies 00:09:52 6. L. González: Laudatio für Martin Richter 00:21:01 7. M. Richter: Molecular dynamics. Photodissociation 00:25:00 8. M. Richter: Experiments with uracil 00:34:24 9. Preisverleihung 00:45:35

Magnetit, Oberfläche, Molekulardynamik, zeitaufgelöste Spektroskopie

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(c) Österreichische Zentralbibliothek für Physik 2016