Karl Franzens University Graz | Graz University of Technology | |
Tuesday 02 March 2021 KFU - Online (Zoom) | |
16:15 - 17:15 |
Physics and Applications of Epsilon-Near-Zero Materials 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 ... more |
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 chemistry 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, ... more |
Tuesday 23 March 2021 TUG - Online | |
16:15 - 17:15 |
Amon based Quantum Machine Learning 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 separation 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 ... more |
Tuesday 27 April 2021 KFU HS 5.01 | |
16:15 - 17:15 |
Quantum magnonics - Quantum optics with magnons 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 qua ... more |
Tuesday 04 May 2021 Graz University of Technology, remote - online | |
16:15 - 17:15 |
Laser Picoscopy: Seeing valence electrons in solids with sub-Angstrom resolution 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 ... more |
Tuesday 11 May 2021 KFU - Online | |
16:15 - 17:15 |
Momentum-Space Movies of Electrons at Interfaces and in 2D Semiconductors 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 Materials 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 Deposition 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 ... more |
Tuesday 15 June 2021 KFU - Online | |
16:15 - 17:15 |
Embedded many-body perturbation theory for the electronic properties of organic systems 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 ... more |
Tuesday 22 June 2021 TUG - Online | |
16:15 - 17:15 |
Focused Electron/Ion Beam Induced deposition for the growth of metallic, magnetic and superconducting nanostructures 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 ... more |
Tuesday 29 June 2021 KFU - Online (Zoom; link in the abstract) | |
16:15 - 17:15 |
Particle acceleration on a nanophotonic chip - and other ways of controlling electrons with ultrafast laser fields It is well known for decades that light can impart momentum to charged particles in the vicinity of a third body. With nanostructured dielectric materials and ultrafast laser pulses, this momentum transfer can become highly efficient, demonstrated in 2013 in two proof-of-concept ... more |