Empa researchers are developing a dressing containing probiotic lactobacilli. These are intended to heal chronically infected wounds by destroying persistent biofilms, the scientists report in a study published in the scientific journal Microbes and Infection.
After their production, which emits a lot of carbon dioxide, cement-based building materials such as concrete absorb the climate gas again – a process that takes decades and can hardly be controlled.
Environmentally friendly, ubiquitously available and recyclable: Clay is a clean alternative among building materials. Empa researcher Ellina Bernard is trying to find out how the coveted material can actually be used to build in a sustainable and stable way. Her research project is being funded by the Swiss National Science Foundation (SNSF) with an Ambizione grant.
At Empa, acoustics experts have been investigating for years how noise is generated by passenger and cargo trains – and which technical and structural measures are particularly effective to prevent or at least reduce it.
Empa researchers want to accelerate the development of urgently needed new energy storage systems with the help of the Aurora battery robot. The Aurora project is part of the European research initiative Battery2030+, which was recently awarded over 150 million euros in funding by the EU. In addition, the project is part of the ETH Board's "Open Research Data" initiative, which promotes digitization and free access to research data.
Switzerland is built, at least as far as the road network is concerned. Therefore – and despite recycling –, significantly more reclaimed asphalt is generated today than can be reused in new roads. Empa researcher Martins Zaumanis has set himself the goal of increasing the recycled content of asphalt – with adapted production methods and simple instructions. Two test sections with recycled asphalt in Uster and on the Lukmanier Pass are promising.
The Empa spin-off BTRY wants to revolutionize rechargeable batteries: Their thin-film batteries are not only safer and longer-lasting than conventional lithium-ion batteries, they are also much more environmentally friendly to manufacture and can be charged and discharged in just one minute. For now, the battery is very small, but the founders have big plans for it.
Empa researchers have developed an epoxy resin that can be repaired and recycled, in addition to being flame-retardant and mechanically strong. Potential applications range from coating for wooden flooring to composites in aerospace and railways.
Climate change discussions often overlook the central role played by the excessive extraction and use of natural resources. The topic, however, will be the central focus of two events being hosted back-to-back in Geneva in September: The World Resources Forum 2023 with Empa, the International Telecommunication Union (ITU), and the International Resource Panel, and the UNEP Global Intergovernmental Meeting on Minerals and Metals.
Graphene nanoribbons have outstanding properties that can be precisely controlled. Researchers from Empa and ETH Zurich, in collaboration with partners from Peking University, the University of Warwick and the Max Planck Institute for Polymer Research, have succeeded in attaching electrodes to individual atomically precise nanoribbons, paving the way for precise characterization of the fascinating ribbons and their possible use in quantum technology.
Bruno Schuler and his young team are embarking on an ambitious research project: He will selectively generate defects in atomically-thin semiconductor layers and attempt to measure and control their quantum properties with simultaneous picosecond temporal resolution and atomic precision. The resulting insights are expected to establish fundamental knowledge for future quantum computers.
New vehicles are responsible for around ten percent of plastic demand in the EU, and the automotive sector is the number one consumer of raw materials like aluminum, magnesium, platinum group metals, and rare earth elements. A new set of provisions, proposed by the European Commission last week to revise the EU End-of-Life Vehicles Directive, intends to enhance the circularity of the automotive sector. Empa researchers played a crucial role in defining the content of this new proposal.
Researchers from Switzerland and China have studied the global trade in highly hazardous chemicals subject to a global treaty – the Rotterdam Convention. The results are sobering: Nearly half of the total trade volume of these chemicals crosses national borders illegally, calling for strong international and national action.
Is it possible to 3D print biodegradable sensors and displays? Researchers from Empa's Cellulose & Wood Materials laboratory have developed a cellulose-based material that allows just that. The mixture of hydroxpropyl cellulose with water, carbon nanotubes and cellulose nanofibrils changes color when heated or stretched – without the addition of any pigments.
Researchers from Empa and Imperial College London are developing a heat-resistant drone that can analyze the source of danger at close range in the event of a building or forest fire. This allows firefighters to optimize the strategy of a high-risk operation before entering the danger zone.
To ensure that wounds remain tightly sealed in the abdomen after surgery, researchers at Empa and ETH Zurich have developed a patch with a sensor function. The polymer patch warns before the occurence of dangerous leaks on sutures in the gastrointestinal tract take hold, while closes the areas on its own. A new material now enables a fast, easy and non-invasive leak diagnosis. The team recently published their findings in the journal Advanced Science.
Plastic particles less than five millimeters in size, also known as microplastics, often settle far away from their point of origin. Empa researchers have now developed a model that can be used to calculate the concentration of microplastics in Swiss lakes and rivers.
In the case of blood poisoning, the bacteria in the blood must be identified as fast as possible so that a life-saving therapy can be started. Empa researchers have now developed "sepsis sensors" with magnetic nanoparticles that detect bacterial pathogens within a short period of time and identify suitable candidates for antibiotic therapies.
During the course of Alzheimer's disease, protein fibrils appear in the spinal fluid of affected individuals. Empa researchers, together with the Department of Neurology at the Cantonal Hospital in St. Gallen, have now visualized the wide spectrum of protein aggregates from oligomers, protofibrils to fibrils in the spinal fluid.
Can ecologically sustainable circuit boards for the electronics industry be produced from cellulose fibers? Empa researcher Thomas Geiger looked into this question. He is now part of a multinational EU project called "Hypelignum". Its goal: biodegradable electronics.
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