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 Karl Franzens University Graz

Graz University of Technology 

TUG/KFU Physics Colloquium Summer 2022

 

Tuesday 08 March 2022      TUG online event


16:15 - 17:15

Physico-chemical processes in planet-forming disks
Peter Woitke, Space Research Institute, Austrian Academy of Sciences, Graz

Planets form in so-called protoplanetary disks. These are astrophysical objects where the remaining masses of gas and dust after star formation keep on rotating around the new-born star for a few million years. On this timescale, we believe that micron-sized dust particles c ... more
Video: https://tugraz.webex.com/tugraz/j.php?MTID=md84681f5f205fc0fad0a584aaa2d2da7

 

Tuesday 15 March 2022      KFU - Hybrid (lecture hall HS05.01, Uni-Platz 5 or via links below)


16:15 - 17:15

Resonant states and their role in nanophotonics
Thomas Weiss, University of Graz

Resonant phenomena have been extensively used in micro- and nanophotonics. These phenomena originate in a discrete set of basis functions known as resonant states or quasi-normal modes that are eigensolutions of Maxwell’s equations. I will introduce the fundamental principles and ... more
Video: https://unimeet.uni-graz.at/b/hoh-pct-ewg-jai

 

Tuesday 22 March 2022      TUG hybrid event: lecture hall P2 / Webex

16:15 - 17:15

- Gas-based nonlinear optics in hollow-core fibres: ultrafast dynamics & applications
Francesco Tani, Max Planck Institute for the Science of Light

Soliton dynamics in gas-filled hollow-core waveguides have brought together nonlinear fibre optics and high field laser science providing new powerful tools for manipulating ultrashort light pulses and an access door to novel nonlinear dynamics. The broadband transmission, the we ... more
Video: https://tugraz.webex.com/tugraz/j.php?MTID=me6a77c77bcae8cc0a3f302a7e8540e64

 

Tuesday 29 March 2022      online - TUG


16:15 - 17:15

Advanced and In Situ Electron Microscopy of Functional Nanomaterials for Organic Photovoltaics and Flexible Devices
Erdmann Spiecker, University Erlangen

Organic solar cells hold great promise for next-generation photovoltaics owing to their low-cost fabrication and their compatibility with flexible substrates. Key elements of a flexible organic solar cell are the active layer for efficient light absorption and charge separation a ... more
Video: https://tugraz.webex.com/meet/gerald.kothleitner

 

Tuesday 05 April 2022      TUG


16:15 - 17:15

Oscillatory Dynamics at Catalytically Active Interfaces Studied by Multi-Scale Operando Electron Microscopy
Marc Georg Willinger, ETH Zurich / TU Munich

Our aim is to understand processes that lead to the emergence of catalytic function though direct observation using a combination of operando scanning and transmission electron microscopy. Starting with simple model catalysts, such as polycrystalline metal foils, we observe the p ... more
Video: https://tugraz.webex.com/tugraz/j.php?MTID=m3dc0eedfb0553045477ec6094586366b

 

Tuesday 10 May 2022      lecture hall HS 05.01, Karl-Franzens University, Universitätsplatz 5


16:15 - 17:15

A complementary approach to quantify weak interactions in protein solutions with high throughput
Pamina M. Winkler, Institute of Materials, EPFL, Lausanne, Switzerland

Weak interactions are predominantly responsible for proteins to form complex colloids and solutions [1]. However, they are not fully understood yet. When studying solutions, weak interactions are often characterized using the osmotic second viral coefficient (B22) that describes ... more
Video: https://unitube.uni-graz.at/portal/streaming.html?id=event21

 

Tuesday 17 May 2022      


16:15 - 17:15

Quantum choreography to the beat of light
Rupert Huber, University Regensburg
https://www.uni-regensburg.de/physics/huber/home/index.html

Lightwave electronics has pushed the control of condensed matter to unprecedented time scales. By harness­ing the carrier wave of intense light as an alternating voltage, electrons can be driven faster than a cycle of light, opening a fascinating quantum world full of promise for ... more
Video: https://uni-regensburg.zoom.us/j/66829865869

 

Tuesday 24 May 2022      


16:15 - 17:15

Structuring light for controlled propagation and manipulation
Alison Yao, University of Strahclyde
https://us02web.zoom.us/j/83616069325

Designing non-trivial light distributions, and controlling them during propagation, is of interest for modern optical technologies and particle/atom trapping. In this presentation I will show how light carrying orbital angular momentum (OAM) can be used to generate optical solit ... more
Video: https://us02web.zoom.us/j/83616069325

 

Tuesday 31 May 2022      

16:15 - 17:15

Femto- phono- magnetism
Sangeeta Sharma, Max-Born-Institute Berlin, Germany

From the outset of research into femtomagnetism, the field in which spins are manipulated by light on femtosecond or faster time scales, several questions have arisen and remain highly debated: How does the light interact with spin moments? How is the angular momentum conserved ... more
Video: https://tugraz.webex.com/meet/schultze

 

Tuesday 14 June 2022      


16:15 - 17:15

Molecular photoacoustic imaging of contrast agents using pump-probe excitation
Jan Laufer , Martin-Luther-Universität Halle-Wittenberg

Biomedical photoacoustic imaging relies on the absorption and thermalisation of optical excitation pulses to generate and detect ultrasound waves in tissue from which high-resolution images (tens of microns) are reconstructed. The images show the initial pressure distribution, wh ... more
Video: https://unimeet.uni-graz.at/b/nus-prq-dom-giv

 

Tuesday 21 June 2022      TUG


16:15 - 17:15

Mixed dimensional van der Waals heterostructures
Aleksandar Matkovich , Montanuniversität Leoben

Van der Waals (vdW) two-dimensional (2D) materials and their heterostructures enable atomically sharp interfaces of single crystalline mono layers to be integrated into devices with novel functionalities for nanoelectronics, optoelectronics, neuromorphic computing, and sensing. T ... more
Video: https://tugraz.webex.com/tugraz/j.php?MTID=m1bd7ac6ce14cad7ab33ea39aee2494ac

 

Tuesday 28 June 2022      KFU


16:15 - 17:15

Topological plasmonics: Ultrafast vector movies on the nanoscale
Harald Giessen, University of Stuttgart

We present an ultrafast vector microscope with 10 nm spatial and subfemtosecond temporal resolution which is capable of mapping all three vector components of the electric field as well as the magnetic field of light on nanophotonic structures. As first application, we record and ... more
Video: https://unimeet.uni-graz.at/b/tho-mxu-pqp-ua4