Seminars

Tabletop transient NEXAFS spectroscopy with a laser-produced plasma source

Laboratory-based laser-produced plasma (lpp) soft X-ray sources achieve high brightness and stability in the EUV and XUV range. With emission energies beyond 1.6 keV and stable operating times in the range of hours, they already offer numerous experimental possibilities that are independent and supplemental to investigations at large scale facilities. [more]

Brain States and the Mystery of Cognition: Using magnetic resonance imaging (MRI) to map the brain

Patterns of neural activity distributed across the brain are termed “brain states”. [more]

Elucidation and Control of Advanced Photofunctions based on Excited States in Molecular Materials

Microscopic understanding of exciton physics in molecular materials for optoelectronics is a great challenge because of their complexity resulting from strong electron-phonon coupling and perhaps interaction to spin degree of freedom, electron spin-flip of intersystem crossing in molecular optoelectronic materials are strongly connected to molecular geometries in the excited states and vibronic coupling, and singlet fission, ultrafast generation of a correlated triplet pair state from a singlet excited state, is viewed as an extreme example of a concerted process of electron-phonon-spin degrees of freedom. [more]

Enhanced reactivity and selectivity of oxide-supported single atom catalysts: it is all in the local atomic environment!

Singly dispersed transition metal atoms on oxide surfaces, the so-called single atom catalyst (SAC) have recently been shown to attain chemical activity and selectivity for several technologically important reactions that surpass those of Pt single crystal surfaces, the prototype exemplary catalyst but with a large price tag. Apart from being cost-effective, single atom catalyst offer excellent opportunities for tuning their local environment and thereby their oxidation state, local coordination, and electronic structure. In this talk, I will present results of collaborative work with several experimental groups on transition metal atoms anchored on surfaces, with and without ligands, that have the potential to be cost-effective catalysts with high activity and product selectivity. [more]

MP Department Seminar by Carlos Sias

TH-Seminar: Prof. Bettina G. Keller

Dynamics of CO2 activation by transition metal ions - The importance of intersystem crossing

Understanding chemistry at the level of a reactive collision, that is how atoms rearrange during the reactive event, is a fundamental question in chemistry as well as in physics. [more]

TH-Seminar: Prof. Florian Libisch

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