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Physics - Electroengineering - 18.08.2020
Artificial materials for more efficient electronics
Artificial materials for more efficient electronics
The discovery of an unprecedented physical effect in a new artificial material marks a significant milestone in the lengthy process of developing "made-to-order" materials and more energy-efficient electronics. We are surrounded by electronic devices. Transistors are used to power telephones, computers, televisions, hi-fi systems and game consoles as well as cars, airplanes and the like.

Physics - Materials Science - 13.08.2020
Uranium reveals its true nature
Uranium reveals its true nature
Scientists have made a significant discovery in how nanoscale minerals form naturally, including the way in which they transition from a soluble to a solid state. Their findings could be used to inform radioactive waste management. Most people are familiar with uranium as a fuel for nuclear power plants.

Physics - 11.08.2020
Using air to amplify light
In a promising breakthrough for the future of communications, EPFL researchers have developed a technology that can amplify light in the latest hollow-core optical fibers. "The idea had been going around my head for about 15 years, but I never had the time or the resources to do anything about it." But now Luc Thévenaz, the head of the Fiber Optics Group in EPFL's School of Engineering, has finally made it happen: his lab has developed a technology to amplify light inside the latest hollow-core optical fibers.

Physics - Materials Science - 10.08.2020
A highly light-absorbent and tunable material
A highly light-absorbent and tunable material
By layering different two-dimensional materials, physicists at the University of Basel have created a novel structure with the ability to absorb almost all light of a selected wavelength. The achievement relies on a double layer of molybdenum disulfide. The new structure's particular properties make it a candidate for applications in optical components or as a source of individual photons, which play a key role in quantum research.

Physics - Materials Science - 10.08.2020
"Simulation microscope" examines transistors of the future
Since the discovery of graphene, two-dimensional materials have been the focus of materials research. Among other things, they could be used to build tiny, high-performance transistors. Researchers at ETH Zurich and EPF Lausanne have now simulated and evaluated one hundred possible materials for this purpose and discovered 13 promising candidates.

Physics - Computer Science - 10.08.2020
Deep learning and metamaterials make the invisible visible
Deep learning and metamaterials make the invisible visible
By combining purpose-built materials and neural networks, researchers at EPFL have shown that sound can be used in high-resolution imagery. Imaging allows us to depict an object through far-field analysis of the lightand sound-waves that it transmits or radiates. The shorter the wave, the higher the image's resolution.

Physics - Electroengineering - 06.08.2020
Efficient valves for electron spins
Efficient valves for electron spins
Researchers at the University of Basel in collaboration with colleagues from Pisa have developed a new concept that uses the electron spin to switch an electrical current. In addition to fundamental research, such spin valves are also the key elements in spintronics - a type of electronics that exploits the spin instead of the charge of electrons.

Physics - 03.08.2020
CERN experiments announce first indications of a rare Higgs boson process
CERN experiments announce first indications of a rare Higgs boson process
Geneva. At the 40th ICHEP conference , the ATLAS and CMS experiments announced new results which show that the Higgs boson decays into two muons. The muon is a heavier copy of the electron, one of the elementary particles that constitute the matter content of the Universe. While electrons are classified as a first-generation particle, muons belong to the second generation.

Materials Science - Physics - 03.08.2020
Using viscous metals in micro fibers
Using viscous metals in micro fibers
Scientists have developed the first micro-structured fibers with a viscous metal inside - a perfect example of what cross-disciplinary teamwork can achieve. Platinum, copper, nickel and phosphorous - those are the components of an amorphous metal alloy with excellent mechanical properties. The alloy is also very corrosion-resistant and attract much interest in watchmaking and micromechanics.

Astronomy / Space Science - Physics - 28.07.2020
A dead star emits a unique mixture of radiations
A dead star emits a unique mixture of radiations
An international collaboration between ground-based and orbiting telescopes is shedding light on one of the mysteries of the universe. The alert was issued by ESA's Integral Space Observatory, whose scientific data are processed at the University of Geneva. An international network of telescopes, of which Integral, the high-energy space observatory of ESA (European Space Agency), is a part, has detected a unique mixture of radiation from a dead star in our galaxy.

Physics - Electroengineering - 15.07.2020
Shaking light with sound
Shaking light with sound
Combining integrated photonics and MEMS technology, scientists from EPFL and Purdue University demonstrate monolithic piezoelectric control of integrated optical frequency combs with bulk acoustic waves. The technology opens up integrated ultrafast acousto-optic modulation for demanding applications.

Materials Science - Physics - 15.07.2020
Using magnetic worms to engineer nanoscale communication systems
Using magnetic worms to engineer nanoscale communication systems
Researchers at EPFL have shown that electromagnetic waves coupled to precisely engineered structures known as artificial ferromagnetic quasicrystals allow for more efficient information transmission and processing at the nanoscale. Their research also represents the first practical demonstration of Conway worms, a theoretical concept for the description of quasicrystals.

Physics - Life Sciences - 13.07.2020
Tiny fish under a giant camera
Tiny fish under a giant camera
Metal-based nanoparticles are a promising tool in medicine - as a contrast agent, transporter of active substances, or to thermally kill tumor cells. Up to now, it has been hardly possible to study their distribution inside an organism. Researchers at the University of Basel have used a three-dimensional imaging method to take high-resolution captures inside zebrafish embryos.

Physics - Materials Science - 10.07.2020
Cherned up to the maximum
Cherned up to the maximum
Topological materials are a new class of materials that could enable completely new types of electronic components and superconductors. In topological materials, electrons can behave differently than in conventional materials. The extent of these "exotic" phenomena depends on the so-called Chern number.

Physics - Chemistry - 08.07.2020
Porous nitrogen-doped graphene ribbons for future electronics
Porous nitrogen-doped graphene ribbons for future electronics
A team of physicists and chemists has produced the first porous graphene ribbons in which specific carbon atoms in the crystal lattice are replaced with nitrogen atoms. These ribbons have semiconducting properties that make them attractive for applications in electronics and quantum computing, as reported by researchers from the Universities of Basel, Bern, Lancaster and Warwick in the Journal of the American Chemical Society.

Physics - Electroengineering - 29.06.2020
A new theory for Semiconductors made of nanocrystals
A new theory for Semiconductors made of nanocrystals
Researchers have provided the first theoretical explanation for how electrical current is conducted in semiconductors made of nanocrystals. In the future, this could lead to the development of new sensors, lasers or LEDs for TV screens. A few years ago, we were introduced to TV screens featuring QLED technology that produces brilliant colours.

Physics - Materials Science - 25.06.2020
X-ray vision and eavesdropping ensure quality
X-ray vision and eavesdropping ensure quality
With an X-ray experiment at the European Synchrotron ESRF in Grenoble (France), Empa researchers were able to demonstrate how well their real-time acoustic monitoring of laser weld seams works. With almost 90 percent reliability, they detected the formation of unwanted pores that impair the quality of weld seams.

Physics - Materials Science - 24.06.2020
Wavy surfaces for better light control
Wavy surfaces for better light control
Researchers at ETH Zurich have developed a method for the production of wavy surfaces with nanometre precision. In the future this method could be used, for instance, to make optical components for data transmission on the internet even more efficient and compact. The importance of light-based technologies for our society was demonstrated once more in recent weeks.

Physics - Life Sciences - 22.06.2020
Super-resolution microscopy reveals a twist inside of cells
Super-resolution microscopy reveals a twist inside of cells
EPFL biophysicists have developed a high-throughput super-resolution microscope to probe nanoscale structures and dynamics of mammalian cells, showing in unprecedented detail the twists and turns of an organelle important for cell division. If you want to understand the underlying mechanisms of cellular motility and division, then the centriole is the organelle of interest.

Physics - Chemistry - 19.06.2020
Researchers cut atom-sized patterns into 2D materials
Researchers cut atom-sized patterns into 2D materials
EPFL researchers have developed a high-precision technology that enables them to carve nanometric patterns into two-dimensional materials. With their pioneering nanotechnology, EPFL researchers have achieved the impossible. They can now use heat to break the links between atoms with a miniature scalpel.