This concentrator technology enables expensive semi-conductor material to be replaced with cheaper lens systems, and greater efficiency to be achieved. In his thesis, physicist Marc Steiner from the Fraunhofer Institute for Solar Energy Systems ISE in Freiburg presented a way of increasing the efficiency of these concentrator solar cells even more.
The contacting of the semi-conductor layers plays a crucial role here, and Marc Steiner's new simulation program optimizes the structure and configuration of the metallic contact fingers. These calculations yielded unprecedented efficiency factors for concentrator solar cells. Marc Steiner will be awarded the 2nd Hugo Geiger Prize for his thesis "Minimization of serial resistance losses in III-V solar cells with the aid of a SPICE network simulation".
Genes play an important role in every organism, particularly where its development and adaptation to the environment are concerned. Modern sequencing technology means that genomes can now be quickly mapped. However, it is still not entirely clear which genetic program is running during which phase of growth. Gene expression – that is, the analysis of which genes are switched on at any given point in time, and which are not – can supply the relevant answers. This helps to differentiate cells, and to understand biological systems on a molecular level. The aim of the thesis "Global methods for the analysis of metatranscriptions on the single-cell level" by Christian Grumaz from the Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB was to establish a new, straightforward procedure that gets by with small sample quantities and enables a high throughput.
"I was able to complete this plan successfully," says Christian Grumaz. The procedure is extremely sensitive, which means that it could potentially be applied in diagnostics, where biopsy material, for example, is usually only available in small quantities. A high throughput of samples is also possible, as parallel sequence technologies can be used. The analysis procedure is of interest for diagnosis, drug development and basic research. Christian Grumaz will be awarded the 3rd Hugo Geiger Prize for his paper.
Marc Steiner | EurekAlert!
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Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
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Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
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At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).
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