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Results 101 - 120 of 188.


Physics - Materials Science - 17.07.2019
A Graphene Superconductor That Plays More Than One Tune
A Graphene Superconductor That Plays More Than One Tune
W hat's thinner than a human hair but has a depth of special traits' A multitasking graphene device developed by researchers at the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab). The superthin material easily switches from a superconductor that conducts electricity without losing any energy, to an insulator that resists the flow of electric current, and back again to a superconductor - all with a simple flip of a switch.

Materials Science - Innovation - 17.07.2019
A new material for the battery of the future, made in UCLouvain
In brief : The challenge of renewable energy? The storage of green energy , i.e., being able to store energy when it's produced while using it when needed. The discovery of the researchers from UCLouvain? A new high performance and safe battery material (LTPS) capable of speeding up charge and discharge to a level never observed so far.

Physics - Materials Science - 17.07.2019
First-ever visualizations of electrical gating effects on electronic structure could lead to longer-lasting devices
First-ever visualizations of electrical gating effects on electronic structure could lead to longer-lasting devices
Scientists have visualized the electronic structure in a microelectronic device for the first time, opening up opportunities for finely tuned, high-performance electronic devices. Physicists from the University of Washington and the University of Warwick developed a technique to measure the energy and momentum of electrons in operating microelectronic devices made of atomically thin - so-called 2D - materials.

Physics - Materials Science - 15.07.2019
Physicists find first possible 3D quantum spin liquid
Physicists find first possible 3D quantum spin liquid
Cerium pyrochlore is first to qualify as long-sought state of matter There's no known way to prove a three-dimensional "quantum spin liquid” exists, so Rice University physicists and their collaborators did the next best thing: They showed their single crystals of cerium zirconium pyrochlore had the right stuff to qualify as the first possible 3D version of the long-sought state of matter.

Environment - Materials Science - 12.07.2019
5000 tons of plastic released into the environment every year
5000 tons of plastic released into the environment every year
In order to estimate for the first time the exact extent of plastic pollution in Switzerland, the Federal Office for the Environment (FOEN) has mandated Empa researchers to calculate how much plastic gets into the environment. Empa has analyzed the seven most frequently used types of plastic. According to the study, more than 5000 tons of plastic are discharged into the environment every year.

Health - Materials Science - 08.07.2019
The most successfull flat share in the world
The most successfull flat share in the world
Biofilms are enormously resistant accumulations of germs, which can cause serious problems, especially in hospitals. Like a single large creature, they can spread within wounds or colonize implants or biomedical products. With novel materials and surfaces researchers intend to combat the sturdy pathogens.

Health - Materials Science - 08.07.2019
Why do bones fail?
Can analytical methods from materials science help us better understand human bones' A research team at Empa in Thun is pursuing precisely this approach. Osteoporosis is a wide­spread disease. Every third woman and every fifth man are affected by bone loss with ad­vanc­ing age. A frequent consequence of this is a fracture of the femoral neck - a painful injury that massively impairs the quality of life of those affected.

Materials Science - Health - 08.07.2019
Deceptively real
The human heart still poses great challenges to modern medicine. More than ten million people in Europe suffer from heart failure, and quite a few of them need a donor organ. Artificial heart pumps are used to bridge the waiting time, but complications are not uncommon. The "Zurich Heart" project, in which Empa is a partner, is developing solutions.

Materials Science - Health - 08.07.2019
Scars: gone with the foam
Scars: gone with the foam
Poorly healing wounds and severe scarring are more than just a cosmetic problem; they can significantly impair a person's mobility and health. Empa researchers have now developed a foam that is supposed to prevent excessive scarring and help wounds to heal quickly. An essential ingredient: the yellow ginger tumeric.

Materials Science - Health - 08.07.2019
Wood on our Skin
Wood on our Skin
Physiological parameters in our blood can be determined without painful punctures. Empa researchers are currently working with a Canadian team to develop flexible, biocompatible nanocellulose sensors that can be attached to the skin. The 3D-printed analytic chips made of renewable raw materials will even be biodegradable in future.

Materials Science - Environment - 25.06.2019
Researchers pioneer method to purify water using solar energy
As the global population grows, fresh water supplies are more precious than ever. While scientists and engineers know how to purify water, making those methods sustainable and energy efficient is another question. One promising approach is solar-driven distillation, or solar steam generation, which can help us get fresh water from wastewater or seawater.

Physics - Materials Science - 25.06.2019
New findings could lead to cheaper solar cells
New findings could lead to cheaper solar cells
Effective atomic interactions in complex materials picked up by on-the-fly machine-learning At the atomic scale materials can show a rich palette of dynamic behaviour, which directly affects the physical properties of these materials. For many years, it has been a dream to describe these dynamics in complex materials at various temperatures using computer simulations.

Materials Science - Environment - 21.06.2019
Perovskite solar cells tested for real-world performance - in the lab
Perovskite solar cells tested for real-world performance - in the lab
Researchers bring diurnal and seasonal variations into the lab to test the performance of perovskite solar cells under realistic conditions. It was only ten years ago that metal-halide perovskites were discovered to be photovoltaic materials. Today, perovskite solar cells made are almost as efficient as the best conventional silicon ones, and there is much hope that they will become a highly efficient and low-cost alternative, as they can be manufactured by rather simple and fast methods like printing.

Physics - Materials Science - 17.06.2019
You Don't Have to Be Perfect for TMDCs to Shine Bright
You Don’t Have to Be Perfect for TMDCs to Shine Bright
Atomically thin semiconductors known as TMDCs (transition metal dichalcogenides) could lead to devices that operate more efficiently than conventional semiconductors in light-emitting diodes, lasers, and solar cells. But these materials are hard to make without defects that dampen their performance.

Materials Science - 17.06.2019
Groundbreaking Study Maps Out Paths to New Nitride Materials
Groundbreaking Study Maps Out Paths to New Nitride Materials
Formed by elements combining with nitrogen, nitrides can possess unique properties with potential applications from semiconductors to industrial coatings. But before nitrides can be put to use, they first must be discovered - and the odds of finding them in nature are slim. Now, your chances of discovering new nitrides just got better with a groundbreaking Nature Materials study led by Berkeley Lab in close collaboration with the National Renewable Energy Laboratory (NREL) and a number of other institutions.

Physics - Materials Science - 17.06.2019
'Hot spots' increase efficiency of solar desalination
’Hot spots’ increase efficiency of solar desalination
Rice University engineers boost output of solar desalination system by 50% Rice University's solar-powered approach for purifying salt water with sunlight and nanoparticles is even more efficient than its creators first believed. Researchers in Rice's Laboratory for Nanophotonics (LANP) this week showed they could boost the efficiency of their solar-powered desalination system by more than 50% simply by adding inexpensive plastic lenses to concentrate sunlight into "hot spots.” The results are available online in the Proceedings of the National Academy of Sciences.

Chemistry - Materials Science - 12.06.2019
Carnegie Mellon Researchers Develop Semi-Liquid Metal Anode for Next-Generation Batteries
Researchers from Carnegie Mellon University's Mellon College of Science and College of Engineering have developed a semiliquid lithium metal-based anode that represents a new paradigm in battery design. Lithium batteries made using this new electrode type could have a higher capacity and be much safer than typical lithium metal-based batteries that use lithium foil as anode.

Materials Science - Physics - 11.06.2019
Pulsed Electron Beams Shed Light on Plastics Production
Pulsed Electron Beams Shed Light on Plastics Production
A new electron microscopy technique developed by Berkeley Lab provides new insight into how plastics are made; could pave way for sustainable plastics Plastics are all around us - they make up our water bottles, trash bags, packing materials, toys, containers, and more. About 300 million tons of plastic are produced worldwide each year, yet the details of what goes on at the atomic scale during the plastics production process is still unclear.

Physics - Materials Science - 05.06.2019
As hot as the Sun's interior
As hot as the Sun’s interior
Physicists create plasma for the first time using nanowires and long-wavelength ultrashort pulse laser Light Physicists at the University of Jena have developed a new method for producing plasma, enabling them to deal with some of the problems that stand in the way of this extremely difficult process.

Materials Science - Physics - 04.06.2019
New material with magnetic shape memory
New material with magnetic shape memory
Researchers at the Paul Scherrer Institute PSI and ETH Zurich have developed a new material whose shape memory is activated by magnetism. It retains a given shape when it is put into a magnetic field. It is a composite material consisting of two components. What is special about the new material is that, unlike previous shape-memory materials, it consists of a polymer and droplets of a so-called magnetorheological fluid embedded in it.