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University of Graz News Lichtspiele

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Wednesday, 27 January 2021

Lichtspiele

Peter Banzer forscht an optischen Chips und Nanomaterialien. Foto: Uni Graz/Tzivanopoulos

Peter Banzer forscht an optischen Chips und Nanomaterialien. Foto: Uni Graz/Tzivanopoulos

Physiker Peter Banzer erforscht neue optische Materialien und Eigenschaften von Licht zur Steuerung von Geräten. Eine Publikation zur „Bändigung“ von diffusen Strahlen erschien kürzlich in Nature Photonics

Präzisere Messgeräte, schnellere Computer, neue Materialien: Das wünschen sich Forschung wie Industrie. Licht könnte dafür ein Schlüssel zum Erfolg sein. „Es lässt sich gut strukturieren, in viele verschiedene Formen pressen und auf kleinstem Raum präzise steuern“, fasst Peter Banzer zusammen. Der aus Deutschland stammende Physiker ist seit 1. September 2020 Professor für Experimentalphysik an der Universität Graz und leitet die Arbeitsgruppe „Optik von Nano- und Quantenmaterialien“. „Wir erforschen die Grundlagen, wie man mit Licht experimentieren kann, und ermöglichen auch erste Anwendungen“, skizziert er. Gefragt sind die Ergebnisse etwa in der Nanowissenschaft, der Mikroskopie und der Quantenoptik.  
Einen großen Schritt nach vorne konnten Banzer und sein Team im Rahmen einer internationalen Kollaboration mit ihrer aktuellsten Studie machen, deren Ergebnisse kürzlich im Fachmagazin Nature Photonics publiziert wurden. Die PhysikerInnen zeigten unter anderem, dass man wissenschaftliche Experimente auch mit einfachen, leicht verfügbaren Lichtquellen wie einer simplen Glühbirne durchführen kann – anstatt mit teuren Lasern. Es gelang ihnen nämlich, die diffusen Strahlen „einzufangen“ und in ganz gezielte Bahnen zu lenken.

 

created by Dagmar Eklaude

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Physicists at the University of Graz (Austria), in collaboration with colleagues from Marburg University and Forschungszentrum Jülich (Germany), have achieved a scientific breakthrough. For the first time, the generation of electrical energy from light has been filmed and described theoretically. This work is of far-reaching significance, not least for optimising sustainable energy production from photovoltaics. This is because it provides fundamental building blocks for understanding the physical processes that take place, for example, in organic solar cells. The paper was published in the journal Physical Review X, one of the world’s most prestigious physics journals.

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A journey through the blood vessels using VR headsets brings biology lessons to life. An interactive quiz brings physics to life. The YouTube video explains the First World War. Whilst mobile phones are increasingly being banned from the classroom, social media platforms, apps and AI are playing an ever-greater role in knowledge transfer at school. But how can teaching with media be made even more effective? What are the challenges in media-based teaching? At the University of Graz, researchers are discussing these issues at a conference being held in Austria for the first time.

Jurassic Sounds: Biologist reconstructs insect songs from 165 million years ago

It was apparently not just the roars of the dinosaurs that made up the soundscape of the animal world during the Jurassic period. Crickets and grasshoppers communicated through a variety of songs and high-pitched sounds, as Thorin Jonsson from the Institute of Biology at the University of Graz discovered together with colleagues from the universities of Lincoln, Bristol (UK), Beijing (China) and Tempe (USA). The findings on what are so far the oldest traces of sound on Earth have just been published in the journal PNAS.

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