news

« BACK

Materials Science



Results 81 - 100 of 297.


Physics - Materials Science - 25.05.2020
Lossless conduction at the edges
Lossless conduction at the edges
Atomically thin layers of the semimetal tungsten ditelluride conduct electricity losslessly along narrow, one-dimensional channels at the crystal edges. The material is therefore a second-order topological insulator. By obtaining experimental proof of this behavior, physicists from the University of Basel have expanded the pool of candidate materials for topological superconductivity.

Health - Materials Science - 14.05.2020
How to assure high-quality masks
How to assure high-quality masks
Empa researchers have worked with the Swiss textile industry to develop technologies and quality standards for textile masks. Hence so-called community masks can now be produced in Switzerland. In order to be able to provide Switzerland with effective protective material during the corona crisis, Empa researchers, together with the textile industry and other partners, have been working under high pressure in recent weeks on technologies and quality standards for so-called community masks.

Physics - Materials Science - 07.05.2020
Laser loop couples quantum systems over a distance
Laser loop couples quantum systems over a distance
For the first time, researchers have succeeded in creating strong coupling between quantum systems over a greater distance. They accomplished this with a novel method in which a laser loop connects the systems, enabling nearly lossless exchange of information and strong interaction between them. In the scientific journal Science, the physicists from the University of Basel and University of Hanover reported that the new method opens up new possibilities in quantum networks and quantum sensor technology.

Environment - Materials Science - 06.05.2020
Filtering out toxic chromium from water
EPFL chemists have developed sponges to capture various target substances, like gold, mercury and lead, dissolved in solution. The sponges are actually porous crystals called metal organic frameworks, and now one exists for capturing toxic hexavalent chromium from water. Hexavalent chromium continues to contaminate water sources around the world, with one US company fined just this February for having put employees at risk.

Environment - Materials Science - 06.05.2020
Going against the trend
Going against the trend
Global warming has affected the entire planet's surface, except for one particular area of the ocean, which has bucked the trend. A research team comprising scientists from ETH Zurich and Princeton University has unravelled the causes of this conundrum. Climate and marine scientists are observing pervasive warming of the ocean and the land surfaces across the globe.

Materials Science - 25.03.2020
Printing complex cellulose-based objects
Printing complex cellulose-based objects
Researchers from ETH Zurich and the Swiss Federal Laboratories for Materials Science and Technology (Empa) have set a new world record: they 3D printed complex objects with higher cellulose content than that of any other additively manufactured cellulose-based parts. To achieve this, they used a clever trick.

Astronomy / Space Science - Materials Science - 12.03.2020
Puzzle about nitrogen solved thanks to cometary analogues
Puzzle about nitrogen solved thanks to cometary analogues
One of the basic building blocks of life is nitrogen. An international consortium was able to detect ammonium salt containing nitrogen on the cometary surface of Chury thanks to a method using analogues for comet material. The method on which the study on the detection of ammonium salt is based was developed at the University of Bern.

Materials Science - Chemistry - 11.03.2020
Nano-sponge with extreme properties
Nano-sponge with extreme properties
A new process simplifies the fabrication of porous materials with a defined nanostructure and takes them one step closer to mass production. Materials with a defined nanostructure can have surprising properties. One example is a lightweight ceramic that springs back to its original shape, like a sponge, after being compressed.

Materials Science - Chemistry - 11.03.2020
Yellow is the new brown
Yellow is the new brown
If different types of vegetables and fruits are stored together, they influence each other's ripening process. This is due to ethylene, which is emitted by some plant-based foodstuff and accelerates ripening. To prevent excessive food waste due to accelerated ripening Empa and ETH Zurich researchers are developing a new catalyst that degrades ethylene into water and carbon dioxide.

Physics - Materials Science - 24.02.2020
Short film of a magnetic nano-vortex
Short film of a magnetic nano-vortex
For the first time, researchers at the Paul Scherrer Institute PSI have recorded a "3D film" of magnetic processes on the nanometer scale. This reveals a variety of dynamics inside the material, including the motion of swirling boundaries between different magnetic domains. The insights were gained with a method newly developed at the Swiss Light Source SLS.

Environment - Materials Science - 20.02.2020
Intensified research in concrete and asphalt
Intensified research in concrete and asphalt
As of March 2020, the new "Concrete and Asphalt" lab will strengthen Empa's research in the field of building materials. Innovative technologies and materials for sustainable production and use are particularly in demand in these areas, as these two building materials, with an annual volume of more than 4.5 billion tonnes, account for the largest proportion of all materials used worldwide by far.

Physics - Materials Science - 18.02.2020
Creating custom light using 2D materials
Creating custom light using 2D materials
Researchers from the University of Geneva and the University of Manchester have discovered structures based on two-dimensional materials that emit tailor-made light in any colour you could wish for. Finding new semi-conductor materials that emit light is essential for developing a wide range of electronic devices.

Materials Science - Life Sciences - 18.02.2020
How to mend a broken heart
How to mend a broken heart
If the heart muscle is damaged, repairing the constantly active organ is a challenge. Empa researchers are developing a novel tissue adhesive inspired by nature, which is able to repair lesions in muscle tissue. They have taken advantage of the incredible ability of marine mussels to adhere to any kind of surface.

Materials Science - Pedagogy - 14.02.2020
Our memory prefers essence over form
Our memory prefers essence over form
Researchers from the University of Geneva and CY Cergy Paris University have shown that current situations conjure up past situations that share deep, structural, similarities. What clues does our memory use to connect a current situation to a situation from the past? The results of a study conducted by researchers from the University of Geneva , Switzerland, - working in collaboration with CY Cergy Paris University in France - contrast sharply with the explanations found until now in the existing literature.

Materials Science - Physics - 13.02.2020
A fast light detector made of two-dimensional materials
A fast light detector made of two-dimensional materials
Two research groups at ETH Zurich have joined forces to develop a novel light detector. It consists of two-dimensional layers of different materials that are coupled to a silicon optical waveguide. In the future, this approach can also be used to make LEDs and optical modulators. Fast and highly efficient modulators as well as detectors for light are the core components of data transmission through fibre optic cables.

Physics - Materials Science - 12.02.2020
New quasiparticle unveiled in room temperature semiconductors
New quasiparticle unveiled in room temperature semiconductors
Physicists from Switzerland and Germany have unveiled fingerprints of the long-sought particle known as Mahan exciton in the room temperature optical response of the popular methylammonium lead halide perovskites. The optical properties of semiconductors are governed by the so-called 'excitons', which are bound pairs of negative electrons and positive holes.

Physics - Materials Science - 07.02.2020
A novel formulation to explain heat propagation
A novel formulation to explain heat propagation
Researchers at EPFL and MARVEL have developed a novel formulation that describes how heat spreads within crystalline materials. This can explain why and under which conditions heat propagation becomes fluid-like rather than diffusive. Their equations will make it easier to design next-generation electronic devices at the nanoscale, in which these phenomena can become prevalent.

Materials Science - Environment - 06.02.2020
Fast and cheap track to new types of solar cells
Fast and cheap track to new types of solar cells
The semiconductor perovskite is seen as a new hope to bring the production price of solar cells down below that of silicon used so far. Empa is developing new manufacturing processes to make perovskite solar cells not only cheaper but also faster to produce and make them ready for industrial use. Since the development of the first perovskite solar cell in 2009, its efficiency is now equal to that of a conventional silicon cell.

Materials Science - 31.01.2020
Harnessing the moiré effect to make transparent images
Researchers at EPFL have developed a material that combines transparent properties with the moiré effect to produce images. The technology could have interesting decorative and anti-forgery applications. Applying a moiré pattern to a transparent material is a new and surprising way of creating images.

Materials Science - Chemistry - 10.01.2020
An 18-carat gold nugget made of plastic
An 18-carat gold nugget made of plastic
ETH researchers have created an incredibly lightweight 18-carat gold, using a matrix of plastic in place of metallic alloy elements. Lovers of gold watches and heavy jewellery will be thrilled. The objects of their desire may someday become much lighter, but without losing any of their glitter. Especially with watches, a small amount of weight can make all the difference.

This site uses cookies and analysis tools to improve the usability of the site. More information. |