news

« BACK

Physics



Results 261 - 280 of 485.


Materials Science - Physics - 08.05.2018
Through the pores into the skin
Through the pores into the skin
Even if the wound looks superficially harmless, steam burns must be cooled persistently. Empa researchers have now been able to show for the first time how hot steam achieves its vicious effect: It penetrates the upper skin layer and can cause severe burns in the lower skin layers - initially almost invisible.

Physics - 26.04.2018
Einstein-Podolsky-Rosen paradox observed in many-particle system for the first time
Einstein-Podolsky-Rosen paradox observed in many-particle system for the first time
Physicists from the University of Basel have observed the quantum mechanical Einstein-Podolsky-Rosen paradox in a system of several hundred interacting atoms for the first time. The phenomenon dates back to a famous thought experiment from 1935. It allows measurement results to be predicted precisely and could be used in new types of sensors and imaging methods for electromagnetic fields.

Chemistry - Physics - 26.04.2018
Traces in scrap
Traces in scrap
Last year Empa's inorganic analytics lab was granted the status of "Reference Laboratory" within the scope of the ProSUM project, funded by the EU. Fine-grained samples of shredder waste from scrapped cars, e-waste or mine dumps from all over Europe end up here. Empa chemists find out what is in them, what is worth extracting and what could be dangerous for staff at recycling plants.

Astronomy / Space Science - Physics - 17.04.2018
Meteorite diamonds tell of a lost planet
Meteorite diamonds tell of a lost planet
Using transmission electron microscopy, EPFL scientists have examined a slice from a meteorite that contains large diamonds formed at high pressure. The study shows that the parent body from which the meteorite came was a planetary embryo of a size between Mercury to Mars. The discovery is published.

Physics - Chemistry - 13.04.2018
Individual impurity atoms detectable in graphene
Individual impurity atoms detectable in graphene
A team including physicists from the University of Basel has succeeded in using atomic force microscopy to clearly obtain images of individual impurity atoms in graphene ribbons. Thanks to the forces measured in the graphene's two-dimensional carbon lattice, they were able to identify boron and nitrogen for the first time, as the researchers report Advances.

Physics - 03.04.2018
Using water molecules to read electrical activity in lipid membranes
Using water molecules to read electrical activity in lipid membranes
EPFL researchers were able to map out in real time how charges are transported across and along membranes simply by observing the behavior of adjacent water molecules. Their non-invasive and label-free method represents a valuable new tool in the effort to understand how cells - and neurons in particular - function.

Physics - Chemistry - 26.03.2018
New Method Speeds Up Development of Medication
New Method Speeds Up Development of Medication
One of the key steps in developing new drugs is determining the atomic structure of its biologically active substances. This generally involves performing X-ray analyses of single crystal structures to determine the ingredient's detailed three-dimensional set-up. However, growing suitable single crystals is often a complex and time-consuming process.

Chemistry - Physics - 13.03.2018
Cleaner diesel emissions
Cleaner diesel emissions
More effective control of diesel nitrogen oxides through dosed addition of ammonia In diesel engines, the burning of the fuel releases nitrogen oxides (NOx), which are harmful to human health. The automobile industry therefore developed a technique that reduces these emissions: Gaseous ammonia is added to the exhaust and, prompted by a catalyst, reacts with the nitrogen oxides to produce harmless nitrogen and water.

Chemistry - Physics - 08.03.2018
Strom on demand
Strom on demand
If photovoltaic or wind power plants produce more electricity than the network can absorb, valuable energy is lost. At the ESI Platform, PSI researchers are investigating how fuel cells can contribute to making this energy usable in a targeted way through storage. The power network cannot store energy.

Materials Science - Physics - 06.03.2018
A treasure trove for nanotechnology experts
A treasure trove for nanotechnology experts
A team from EPFL and NCCR Marvel has identified more than 1,000 materials with a particularly interesting 2D structure. Their research, which made the cover page of Nature Nanotechnlogy, paves the way for groundbreaking technological applications. 2D materials, which consist of a few layers of atoms, may well be the future of nanotechnology.

Physics - Materials Science - 02.03.2018
Controlling skyrmions with lasers
EPFL scientists have produced controllable stable skyrmions using laser pulses, taking a step towards significantly more energy-efficient memory devices. The work is published in Physical Review Letters. A skyrmion is a collection of electron spins that look like a vortex in certain magnetic materials.

Life Sciences - Physics - 28.02.2018
Super-resolution microscopy in both space and time
Super-resolution microscopy in both space and time
In a breakthrough for biological imaging, EPFL scientists have developed the first microscope platform that can perform super-resolution spatial and temporal imaging, capturing unprecedented views inside living cells. The landmark paper is published. Super-resolution microscopy is a technique that can "see" beyond the diffraction of light, providing unprecedented views of cells and their interior structures and organelles.

Life Sciences - Physics - 21.02.2018
New Interaction Mechanism of Proteins Discovered
New Interaction Mechanism of Proteins Discovered
Proteins are among the most important biomolecules and are the key mediators of molecular communication between and within cells. For two proteins to be able to bind, specific regions of their three-dimensional structure have to exactly match one another - like a key that fits into a lock. The structure of proteins is extremely important for their functioning and for triggering the required response in cells.

Physics - Chemistry - 12.02.2018
Imaging at Paul Scherrer Intitute helps to increase production at ABB site in Aaargau
Imaging at Paul Scherrer Intitute helps to increase production at ABB site in Aaargau
The ABB facility in Wettingen, Aargau, got practical recommendations on increasing output in the manufacture of ceramic components. The ceramics in question are voltage-dependent resistors used in overvoltage protectors - a kind of lightning protection system - for example, in electrical transmission lines.

Electroengineering - Physics - 05.02.2018
A revolutionary material for aerospace and neuromorphic computing
A revolutionary material for aerospace and neuromorphic computing
Vanadium dioxide's unique properties make it perfect for outperforming silicon and giving rise to a new generation of low-power electronic devices.

Physics - Materials Science - 02.02.2018
Revealing the hidden path of perovskite formation
Revealing the hidden path of perovskite formation
EPFL scientists systematically study the path of the sequential deposition reaction used to build perovskite solar panels. The study is published in Science Advances and offers much-needed, fundamental understanding of perovskite formation and its different stages. Image:  Scanning electron microscope (SEM) image showing the formation of methylammonium lead iodide perovskite (CH3NH3PbI 3 ) by the reaction of lead iodide (PbI 2 ) films with methylammonium iodide (CH3NH3I) solution for 2 seconds in the dark.

Physics - Environment - 29.01.2018
Using what's there
Using what’s there
At the Paul Scherrer Institute PSI, researchers are looking for solutions that enable energy from the sun, the wind, or biomass to be efficiently integrated into the Swiss energy system. A city - let's call it Esiville - wants to become a trailblazer in sustainability and obtain its energy completely from sun, wind, and biomass.

Physics - Materials Science - 26.01.2018
Making lighter vehicles with magnesium alloys
Making lighter vehicles with magnesium alloys
EPFL researchers have developed models of magnesium alloys to understand how to make the metal more pliable. Magnesium is the lightest metal on earth but cannot easily be shaped into usable forms. The researchers hope that with the models will lead to the discovery of new, more malleable alloys, so that carmakers can make lighter vehicles that consume less energy.

Physics - Chemistry - 15.01.2018
The first precise measurement of a single molecule's effective charge
The first precise measurement of a single molecule’s effective charge
For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics. Electrical charge is one of the key properties that allows molecules to interact.

Physics - Materials Science - 11.01.2018
Extremely bright and fast light emission
Extremely bright and fast light emission
A type of quantum dot that has been intensively studied in recent years can reproduce light in every colour and is very bright. An international research team including scientists from Empa has now discovered why this is the case. The quantum dots could someday be used in LEDs. An international team of researchers from ETH Zurich , IBM Research Zurich, Empa and four American research institutions have found the explanation for why a class of nanocrystals that has been intensively studied in recent years shines in such incredibly bright colours.