From cloudy glasses to deposits in dishwashers – limescale is a ubiquitous problem. An international research collaboration led by two researchers at Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) has now investigated which substances could be added to dishwasher detergent to prevent the build-up of limescale. Knowledge about the mechanisms involved can be used to develop more sustainable ingredients. The results have been published in the journal Angewandte Chemie.
Dispersion paints are mostly used in households for painting walls and ceilings. An interdisciplinary research team from the University of Bayreuth has now analysed the chemical composition of two typical dispersion paints and discovered a large number of solid particles in them which are only a few micro- or nanometers in size. Studies on biological test systems showed that these particles can harm living organisms. Using a novel membrane developed at the University of Bayreuth, these particles can be filtered out of water before they enter the environment.
The production of "green hydrogen" by electrolysis from renewable electricity is a key technology in the energy transition. One unsolved problem so far has been the need for expensive, hard-to-find precious metals. This is where the “HighHy” project, launched on 1 August 2022, comes in, in which the University of Bayreuth collaborates with Fraunhofer IFAM and three universities in New Zealand. Together, the partners want to develop a cost-effective and resource-saving process for water electrolysis that uses nickel and manganese as catalyst materials. The BMBF is funding the project for three years, the University of Bayreuth will receive a total of around 240,000 euros.
A research project at Landshut University of Applied Sciences wants to improve the manufacturing process for protective face masks in Germany and the filter effect of the masks.
Passive day cooling is a promising technology for the sustainable reduction of energy consumption. It avoids the heating up of buildings by solar radiation and dissipates accumulated heat without external energy consumption. Researchers at the University of Bayreuth have now created a test system with which the materials used for passive cooling can be reliably characterised and compared - regardless of weather conditions and environmental conditions. The measurement setup presented in "Cell Reports Physical Science" is the first step towards a standardised, globally applicable test system for comparing high-performance cooling materials.
Munich, Germany – In many industrial sectors, such as in the automotive industry, in aerospace or in the energy sector, the demand for special metal components that are light and have a high strength is increasing. Modern gas turbines, for example, require extremely stable and at the same time lightweight heat shields. An important manufacturing process for this is the powder-bed fusion process of metals using laser beam (PBF-LB/M). Depending on the application, the process is not yet always competitive compared with conventional production in terms of unit costs.
Hydrogen bonds are of fundamental interest in materials science, physics and chemistry. An international team including scientists from the University of Bayreuth has now achieved surprising insights into the formation of hydrogen bonds using a novel method that enables the application of NMR spectroscopy in high-pressure research. The research results, published in Nature Communications, may be a starting point for the targeted design of materials that contain symmetrical hydrogen bonds and therefore exhibit extraordinary, potentially technologically interesting properties.
What do coffee, red wine and ink have in common? The stubborn stains they leave behind. Anyone who has ever knocked over a cup of coffee will know that coffee dries in an unusual pattern, the stain is lighter at the center but it gets darker around the perimeter, an effect known as the coffee ring. Prof. Dr. Nicolas Vogel and his team of researchers from the Department of Chemical and Biological Engineering at Friedrich Alexander Universität Erlangen Nürnberg (FAU) and their colleagues in Edinburgh are investigating a strategy to tackle the coffee ring effect and produce a consistent drying pattern. Their findings have been published in the reputable journal Nature Communications.
Researchers have developed 3D printed artificial heart valves designed to allow a patient’s own cells to form new tissue. To form these scaffolds using melt electrowriting – an advanced additive manufacturing technique – the team has created a new fabrication platform that enables them to combine different precise, customized patterns and hence to fine-tune the scaffold’s mechanical properties. Their long-term goal is to create implants for children that develop into new tissue and therefore last a lifetime.
Nanosheets are finely structured two-dimensional materials and have great potential for innovation. They are fixed on top of each other in layered crystals, and must first be separated from each other so that they can be used, for example, to filter gas mixtures or for efficient gas barriers. A research team at the University of Bayreuth has now developed a gentle, environmentally-friendly process for this difficult process of delamination that can even be used on an industrial scale. This is the first time that a crystal from the technologically attractive group of zeolites has been made usable for a broad field of potential applications.
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