Karl Franzens University Graz Graz University of Technology

## TUG/KFU Physics Colloquium Summer 2021

 Tuesday 02 March 2021      KFU - Online (Zoom) 16:15 - 17:15 Physics and Applications of Epsilon-Near-Zero MaterialsRobert W. Boyd, University of Ottawa In this talk, we describe some of the properties of light propagation through a material for which the dielectric permittivity, and hence the refractive index, is nearly vanishing. Among other unusual optical properties, we find that such epsilon-near-zero (ENZ) materials display ... moreVideo: https://us02web.zoom.us/j/81876426812 Tuesday 09 March 2021      TUG online 16:15 - 17:15 2D and 3D SEM-based electron diffraction techniques as central tools for correlative microscopy to obtain new insights into microstructure physics and chemistryStefan Zaefferer, Max Planck Institute for Iron Research Duesseldorfhttps://www.mpie.de/2890931/microscopy_and_diffraction The scanning electron microscope (SEM) offers two electron diffraction techniques that allow to obtain comprehensive and quantitative information about the crystalline microstructure of materials, namely electron backscatter diffraction (EBSD) with all its facets and variations, ... moreVideo: https://tugraz.webex.com/meet/gerald.kothleitner Tuesday 23 March 2021      TUG - Online 16:15 - 17:15 Amon based Quantum Machine LearningAnatole von Lilienfeld, University Viennahttps://www.chemspacelab.org/head-of-lab/ Many of the most relevant observables of matter depend explicitly on atomistic and electronic details, rendering a first principles approach to computational materials design mandatory. Alas, even when using high-performance computers, brute force high-throughput screening of mat ... more Tuesday 20 April 2021      Graz University of Technology, remote - online 16:15 - 17:15 Nanoporous materials for hydrogen isotope separationDr. Michael Hirscher, Max-Planck-Institut für Intelligente Systeme (ehemals Max-Planck-Institut für Metallforschung), Stuttgarthttps://mms.is.mpg.de/research_fields/hydrogen-storage One of the important operations in chemical industry is separation and purification of gaseous products. Especially H$_2$/D$_2$ isotope separation is a difficult task since its size, shape and thermodynamic properties resemble each other. Porous materials offer two different mech ... moreVideo: https://tugraz.webex.com/tugraz/j.php?MTID=m515e47db70524775a7f5460d95f963c6 Tuesday 27 April 2021      KFU HS 5.01 16:15 - 17:15 Quantum magnonics - Quantum optics with magnonsSilvia Viola-Kusminskiy, Max Planck Institute for the Science of Light In the last five years, a new field has emerged at the intersection between Condensed Matter and Quantum Optics, denominated “Quantum Magnonics”. This field strives to control the elementary excitation of magnetic materials, denominated magnons, to the level of the single quanta, ... moreVideo: https://us02web.zoom.us/j/84587309911 Tuesday 04 May 2021      Graz University of Technology, remote - online 16:15 - 17:15 Laser Picoscopy: Seeing valence electrons in solids with sub-Angstrom resolutionProf. Dr. Eleftherios Goulielmakis, University of Rostock The wavelength of visible light is often assumed to impose a fundamental frontier in optical microscopy. Indeed, the Abbe limit constrains the resolution of optical techniques to tens or hundreds of nanometers and makes visible light inadequate for electron-level imaging of the m ... moreVideo: https://1drv.ms/u/s!AtN8DP2nnqYUgbUOvP3tZpwlIdly9A?e=0TSst3 Tuesday 11 May 2021      KFU - Online 16:15 - 17:15 Momentum-Space Movies of Electrons at Interfaces and in 2D SemiconductorsUlrich Höfer, University Marburg Time-resolved photoemission combines femtosecond pump-probe techniques with angle-resolved photoelectron spectroscopy (ARPES). New opportunities for this powerful technique arise in combination with THz excitation on one hand and ultrashort XUV probe pulses on the other hand. I w ... more Tuesday 18 May 2021      Graz University of Technology - remote online 16:15 - 17:15 Developments in High Speed Structural Imaging of Low Dimensional MaterialsProf. Angus Kirkland, University of Oxford I will describe recent work using high speed direct electron detectors and artificial intelligence / machine learning to automatically map defect transitions in graphene. I will also discuss the use of similar detectors in electron ptychography, in particular under extremely low ... more Tuesday 08 June 2021      TUG - Online 16:15 - 17:15 Polymer Films, Structures, and Devices by Initiated and Oxidative Chemical Vapor DepositionKenneth K. S. Lau, Department of Chemical and Biological Engineering, Drexel University Chemical vapor deposition (CVD) is a non-conventional route for constructing polymers as thin films, non-planar structures, and integrated devices. Polymer thin films are conventionally formed through liquid phase processing, like dip coating, spray coating and spin casting. Like ... moreVideo: https://1513041.mediaspace.kaltura.com/media/TU+Graz+-+Colloquium+Talk/1_f86g9afn Tuesday 15 June 2021      KFU - Online 16:15 - 17:15 Embedded many-body perturbation theory for the electronic properties of organic systemsXavier Blase, Institut Néel, CNRS, Grenoble, France Many-body perturbation theories, such as the GW and Bethe-Salpeter formalisms, have become a tool of choice in solid-state physics for studying the optoelectronic properties of crystals. Difficulties arise when attempting to explore with such techniques extended disordered system ... moreVideo: https://unimeet.uni-graz.at/b/pus-von-6fm-19m Tuesday 22 June 2021      TUG - Online 16:15 - 17:15 Focused Electron/Ion Beam Induced deposition for the growth of metallic, magnetic and superconducting nanostructuresJosé María De Teresa , Universidad de Zaragoza, Spain Today, nanolithography is a key enabling technology in various research and application fields. Focused Electron/Ion Beam Induced Deposition (FEBID/FIBID) nanolithography techniques stand out for the growth of functional nanomaterials with high-resolution, and their use is widesp ... moreVideo: https://felmi-zfe.webex.com/felmi-zfe-de/j.php?MTID=m1b23b6c2b772b0e44bf7c2dad2930131 Passwort: U4qDmmNQu54 Tuesday 29 June 2021      KFU - Online 16:15 - 17:15 TBAPeter Hommelhoff , Friedrich-Alexander-University Erlangen