After extensive analyses, Empa researchers found the cause of the concrete scandal in County Donegal, Ireland, where structural damage has been causing red faces and protests for years: Concrete walls of thousands of houses are riddled with cracks, necessitating expensive repairs or even demolition.
Bifacial thin film solar cells based on copper indium gallium diselenide or CIGS can collect solar energy from both their front and their rear side – and thus potentially yield more solar electricity than their conventional counterparts. So far, however, their fabrication has led to only modest energy conversion efficiencies.
Using a new analytical method, Empa researchers have tracked viruses as they pass through face masks and compared their failure on the filter layers of different types of masks. The new method should now accelerate the development of surfaces that can kill viruses, the team writes in the journal Scientific Reports.
Next week the UN intergovernmental negotiating committee (INC) on plastic pollution will meet in Uruguay to develop an international legally binding instrument against plastic pollution. There is concern among scientists that the negotiations will overlook the diversity and complexity of chemicals present in plastics. This would severely undermine the treaty’s effectiveness, according to a new study published in the recent issue of the scientific journal Environmental Science & Technology Letters.
Hearing-impaired people whose auditory nerve is still intact can often be helped with a cochlear implant. But inserting the implant into the inner ear is not without risks, as facial nerves can be damaged in the process. Empa researchers have developed a novel smart drill that minimizes the risk by automatically shutting off when it comes near nerves.
Empa researchers are developing a medical chip in collaboration with the ETH Zurich and the Cantonal Hospital of St.Gallen that will allow statements to be made about the effect of substances on babies in the womb. The Zurich-based ProCare Foundation is funding the project, which was recently launched.
Together with EPFL and ETH Zurich colleagues, an Empa team is developing next-generation VR gloves that will make virtual worlds tangible. The glove is to be tailored to each user and capable of being produced largely automatically – using a 3D printing process.
Extreme miniaturization of infrared (IR) detectors is critical for their integration into next-generation consumer electronics, wearables and ultra-small satellites. Thus far, however, IR detectors have relied on bulky (and expensive) materials and technologies.
The substitution of petrochemical materials with those obtained from renewable raw materials is an important step towards increasing sustainability. In just two years of intensive and open collaboration between Empa and the Datwyler Schweiz AG as part of an Innosuisse project, a process was successfully developed that brought together the worlds of cellulose and rubbers.
The DYNCAT project, in which Empa researchers are working with partners in Switzerland, Germany and France, is aiming at approaches of passenger jets that cause less noise and CO2 emissions – thanks to intelligent assistance systems for the pilots.
An international research team led by drone expert Mirko Kovac of Empa and Imperial College London has taken bees as a model to develop a swarm of cooperative, 3D-printing drones. Under human control, these flying robots work as a team to print 3D materials for building or repairing structures while flying, as the scientists report in the cover story of the latest issue of Nature.
In the FOXIP project, researchers form Empa, EPFL and the Paul Scherrer Institute attempted to print thin-film transistors with metal oxides onto heat-sensitive materials such as paper or PET. The goal was ultimately not achieved, but those involved consider the project a success – because of a new printing ink an a transistor with "memory effect".
With energy prices soaring, heating costs will also inevitably rise in the coming winter. In order to mitigate this, solutions for operating buildings more efficiently are needed. The Empa spin-off viboo has developed an algorithm that makes it possible to operate even older buildings with around 25 percent less energy – while user comfort remains the same or even improves.
In early August 2022, the Aerogel Architecture Award was presented at Empa for the second time. The winning project comes from Germany, while buildings from Switzerland take second and third place. They all impressively demonstrate how historical buildings can be upgraded to the latest energy standards thanks to an innovative use of aerogel materials.
Crystals consisting of wildly mixed ingredients - so-called high-entropy materials - are currently attracting growing scientific interest. Their advantage is that they are particularly stable at extremely high temperatures and could be used, for example, for energy storage and chemical production processes. An Empa team is producing and researching these mysterious ceramic materials, which have only been known since 2015.
A team of researchers at Empa developed a water-activated disposable paper battery. The researchers suggest that it could be used to power a wide range of low-power, single-use disposable electronics – such as smart labels for tracking objects, environmental sensors and medical diagnostic devices – and minimize their environmental impact. The proof-of-principle study has been published in the journal Scientific Reports.
At the end of the 18th "European Bridge Conference" in Edinburgh in June, the former Director of Empa in Dübendorf, Urs Meier, was honored with the "Lifetime Achievement Award" for his research and developments in the field of carbon fiber reinforced plastics (CFRP) in the construction industry at a festive event in the historic Town Hall. The award was presented by Lord Provost Robert Aldridge.
Copper exposure in the environment and the protein alpha-synuclein in the human brain could play an important role in the pathogenesis of Parkinson's disease. A team from Empa and the University of Limerick was able to show how the protein takes on an unusual shape when exposed to large amounts of copper ions. The findings could help develop new strategies for the treatment of neurodegenerative diseases.
Graphene-based particles released from polymer composites after abrasion induce negligible health effects. Under the leadership of Empa, an international research team of the Graphene Flagship project conducted a study on the health risks of graphene-containing nanoparticles and recently published the results in Journal of Hazardous Materials.
With the help of digital twins, researchers at Empa and Stellenbosch University are aiming to reduce food waste, for example in the case of citrus fruits, along the production and supply chains. The hygrothermal measurement data needed to improve the shelf life of oranges and the like would actually be available. So far, however, they have been underutilized, the researchers write in a recent study in the journal Nature Food.
A new robot is capable of switching from an underwater drone to an aerial vehicle in less than one second. The robot also features a suction disc inspired by the remora fish, which enables it to hitchhike on wet or dry moving objects to significantly reduce its power consumption. It is designed for biological and environmental monitoring in marine ecosystems such as surveying ocean pollution in the open sea as the scientist of Beihang University, Imperial College London and Empa point out in a new study published in Science Robotics.
Researchers from ETH Zurich, Empa and the University of Zurich have developed a new material for an electronic component that can be used in a wider range of applications than its predecessors. Such components will help create electronic circuits that emulate the human brain and that are more efficient than conventional computers at performing machine-learning tasks.
Anyone who lives in an old building with wooden floors knows the problem: Even if the neighbors from above glide across the floor with graceful elegance, it sounds as if you were living under a bowling alley. Impact sound is a challenge even for the most modern wooden buildings. Scientists at Empa are now tinkering with a solution.
Together with researchers from Ulm and Neuchâtel, Empa will soon be studying material samples on the ISS. The material in question are super-hard and corrosion-resistant alloys of palladium, nickel, copper and phosphorus - also known as "metallic glasses". A high-tech company from La Chaux-de-Fonds, which produces materials for the watch industry, is also involved.
In recent years, Empa has worked with an external hydraulics specialist to develop a fully variable electrohydraulic valve control system. called FlexWork, which can be used for internal combustion engines and other thermal/pneumatic machines.
Chemical syntheses in liquids and gases take place in three-dimensional space. Random collisions between molecules have to result in something new in an extremely short time. But there is another way: on a gold surface under ultrahigh vacuum conditions, molecules lying still next to each other can be made to combine - even those that would never want to react with each other in a liquid. Researchers at Empa have now discovered such a reaction. Best of all, the experts can "take pictures" and watch every step of the reaction.
A bandage that releases medication as soon as an infection starts in a wound could treat injuries more efficiently. Empa researchers are currently working on polymer fibers that soften as soon as the environment heats up due to an infection, thereby releasing antimicrobial drugs.
The Comprex (TM) supercharger, like the turbocharger, is a Swiss invention. The Comprex uses pressure waves in direct contact of the exhaust gas with fresh air for supercharging, while a turbocharger couples two flow machines (a turbine and a compressor). Now a brand new design called "Comprex 2.0" showed many advantages in combination with a natural gas engine.
To meet the challenges in cities related to climate change and increasing urbanization, new approaches to transforming urban space are needed. One possibility are so-called Superblocks, large-scale city blocks with little or even no motorized through traffic inside them. An Empa study has analyzed the potential of different cities to be redesigned according to this principle.
Radiation therapy is one of the cornerstones of cancer therapy. However, some types of tumor respond little or hardly at all to radiation. If it were possible to make tumor cells more sensitive, treatment would be more effective and gentler. Empa and ETH Zurich researchers have now succeeded in using metal oxide nanoparticles as "radiosensitizers" – and in producing them on an industrial scale.
A newly installed data center in the NEST research building is not only used for data processing tasks, but also helps to heat the entire building. The server system is part of the international EU research project ECO-Qube, which is investigating the integration of data centers into building systems and their energy-efficient operation.
Noise barriers or improved wheel systems and brakes that are less noisy are not the only ways to reduce railway noise for close-by residents. An inconspicuous component under the tracks is a source of hope for a research team including Empa scientists.
Together with teams from England and Germany, Empa researchers developed a monitoring system for aircraft components. In the future, minor damage could be detected and monitored during flight without the aircraft having to go into the hangar for maintenance. This will reduce operating costs and increase safety at the same time.
Super-insulating materials such as aerogels are expensive. At the same time, they offer a powerful advantage: the thinner the insulation of a building, the larger its usable area. An Empa research team shows when and where, even today, the use of aerogel is already economically viable and ventures an optimistic forecast.
Alzheimer's and other dementias are among the most widespread diseases today. Diagnosis is complex and can often only be established with certainty late in the course of the disease. A team of Empa researchers, together with clinical partners, is now developing a new diagnostic tool that can detect the first signs of neurodegenerative changes using a sensor belt.
Twelve years of intense work are now bearing fruit – researchers at Empa have developed unique carbon materials with quite astonishing, hitherto unattained electronic and magnetic properties, which one day could be used to build quantum computers with novel architectures. A million-dollar grant from the Werner Siemens Foundation for the next ten years now gives this visionary project an unusually long research horizon, greatly increasing the prospects for success.
Seemingly less hazardous than Delta, but significantly more infectious: The spread of the omicron variant of the SARS-CoV-2 coronavirus raises the question of whether it can push the healthcare system to its breaking point. Empa researchers have worked with partners to model scenarios for both Switzerland and Germany – and conclude that this is an unlikely course of events. Nevertheless, some risks remain.
In a large-scale fundraising campaign, popular YouTubers like Mister Beast and Mark Rober are currently trying to rid the oceans of almost 14,000 tonnes of plastic waste. That's about 0.15 per cent of the amount that ends up in the oceans every year. But it's not just our waters that are full of plastic. A new study shows that the spread of nanoplastic through the air is a more widespread problem than previously thought.
The navigation software group HERE is taking over a software tool developed by Migros and Empa and making it available worldwide. The tool can be used to calculate the CO2 emissions of trucks with different powertrain systems for any route. It can show logistics companies worldwide on which routes hydrogen, electric, biogas or biodiesel trucks can be used and how low their CO2 emissions are compared to diesel-powered trucks.
The competition starts on 19 January 2022 and includes construction projects with Aerogel all over the world.
The Empa spin-off viboo has developed a self-learning algorithm for controlling the indoor climate. This enables predictive cooling or heating of buildings, thus saving around one third of energy. Following successful experiments at NEST, Empa's and Eawag's research and innovation building, the first pilot projects are now being implemented with industrial partners.
Empa and Lidl Switzerland have jointly developed a cellulose protective coating for fruit and vegetables. The novel coating is made from so-called pomace – squeezed fruit and vegetable peels. The innovative project can reduce packaging and prevent food waste.
The World Climate Conference in Glasgow has just ended. Empa researchers show how the energy transition could lead to the lowest possible cumulative emissions: Instead of slowly cutting back emissions, we should quickly push ahead with the conversion to solar energy and use fossil power plants at full capacity for one last time to do so.
Spalted wood is a highly sought-after material in the high-end furniture industry. In a newly developed process, Empa scientists have succeeded at controlling the spread of fungi in native wood types to create elaborate marblewood pictures – and even taught the fungi to write some words.
Switzerland and the EU are pushing the reuse of raw materials. But despite the best efforts, the circular economy in the textile industry sometimes produces abstruse blossoms. After all, recycling can also harm the environment. Empa researcher Claudia Som dispels sustainability myths in an interview and tells consumers how to recognize black sheep.
Short-wave infrared light (SWIR) is useful for many things: It helps sort out damaged fruit and inspecting silicon chips, and it enables night vision devices with sharp images. But SWIR cameras have so far been based on expensive electronics. Researchers at Empa, EPFL, ETH Zurich and the University of Siena have now developed a SWIR screen consisting of just eight thin layers on a glass surface. This could make IR cameras useful everyday objects.
With the signing of a statement of cooperation, the BioProducts Institute at the University of British Columbia (BPI) and Empa are celebrating a new partnership to promote innovation and collaboration, furthering joint developments in the field of biobased solutions.
Led by scientists at Empa and the International Iberian Nanotechnology Laboratory, an international team of researchers from Switzerland, Portugal, Germany, and Spain have succeeded in building carbon-based quantum spin chains, where they captured the emergence of one of the cornerstone models of quantum magnetism first proposed by the 2016 Nobel laureate F. D. M. Haldane in 1983.
What role do transparency and technology play in promoting a sustainable trade in natural resources? Is green mining a myth or can it become reality? These and other questions are the focus of an event organized by the World Resources Forum (WRF) on Wednesday, 13 October 2021, at the Empa Academy in Dübendorf.
Boasting an intricate, doubly curved concrete roof, lightweight funicular floors, and self-learning building technology, the latest addition to Empa and Eawag's NEST research building in Duebendorf, Switzerland officially opened today. The innovative unit illustrates nearly a decade of formative ETH Zurich research in architecture and sustainable technologies.
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