Materials Science

Results 421 - 440 of 866.

Physics - Materials Science - 05.05.2020
Less gold is Sometimes Better
Less gold is Sometimes Better
Using an ultra-thin gold layer, scientists at TU Wien (Vienna) succeeded in creating an almost optimal infrared absorber. Possible applications range from astrophysics to virus detection. Infrared detectors play an important role in research: many molecules absorb electromagnetic radiation in the infrared range in a very characteristic way.

Physics - Materials Science - 01.05.2020
A tiny lens with an on/off switch
A tiny lens with an on/off switch
A team of physicists from the universities of Stanford and Amsterdam, led by UvA-physicist Jorik van de Groep, have constructed a new type of lens, with a thickness of only a single layer of atoms, that can be turned on and off at will. Such tuneable optical elements have promising applications, for example in augmented and virtual reality.

Environment - Materials Science - 30.04.2020
Largest amount of microplastics found on ocean floor
Our researchers have helped record the highest level of microplastics ever found on the ocean floor - with up to 1.9 million pieces in an area of just one square metre. The discovery highlights the problem of plastic pollution in our seas, 99 per cent of which lies beneath the waves. Working as part of an international team the researchers have shown how deep-sea currents act as conveyor belts, transporting tiny plastic fragments and fibres across the seafloor.

Chemistry - Materials Science - 30.04.2020
New recycling method could make polyurethane materials sustainable
Researchers at the University of Minnesota are part of a national team in the Center for Sustainable Polymers that has found a better way to recycle a versatile plastic material, called polyurethanes, that could prevent the material from becoming waste. In the past, a few methods have attempted to recycle polyurethane waste, but these techniques result in a material of lower quality.

Materials Science - Chemistry - 29.04.2020
MRI scanning assists with next generation battery design
Magnetic resonance imaging (MRI) can provide an effective way of supporting the development of the next generation of high-performance rechargeable batteries, according to research led by the University of Birmingham. The technique, which was developed to detect the movement and deposition of sodium metal ions within a sodium battery, will enable faster evaluation of new battery materials, and help to accelerate this type of battery's route to market.

Materials Science - 28.04.2020
Understanding how fluids heat or cool surfaces
Understanding how fluids heat or cool surfaces
Textbook formulas for describing heat flow characteristics, crucial in many industries, are oversimplified, study shows. Whether it's water flowing across a condenser plate in an industrial plant, or air whooshing through heating and cooling ducts, the flow of fluid across flat surfaces is a phenomenon at the heart of many of the processes of modern life.

Materials Science - Physics - 28.04.2020
Three Research Groups, Two Kinds of Electronic Properties, One Material
An outstanding collaboration combines materials science, experimental and theoretical physics. The work paves the way to new designed materials that combine in them multiple electrical functionalities. This is the story of a unique material - made of a single compound, it conducts electrons in different ways on its different surfaces and doesn't conduct at all in its middle.

Chemistry - Materials Science - 27.04.2020
MEET - Publication galvanic corrosion
MEET - Publication galvanic corrosion
In addition to high purchase costs and the still underdeveloped charging infrastructure, the limited range is one of the biggest obstacles to switching to electric vehicles. Industry and science are therefore working intensively on developing batteries with a higher energy density and making them suitable for series production.

Materials Science - Chemistry - 27.04.2020
Dirty carbon reveals a sophisticated side
Dirty carbon reveals a sophisticated side
Tar, the everyday material that seals seams in our roofs and driveways, has an unexpected and unappreciated complexity, according to an MIT research team: It might someday be useful as a raw material for a variety of high-tech devices including energy storage systems, thermally active coatings, and electronic sensors.

Physics - Materials Science - 23.04.2020
Movies of nano-tornadoes
Movies of nano-tornadoes
The destructive force of a tornado occurs due to the extremely high rotational speeds in its center, which is called "vortex". Surprisingly, similar effects as in such storms are predicted for light that travels along an atomically smooth gold surface. This light can exhibit angular momentum and vortices.

Electroengineering - Materials Science - 23.04.2020
Sensors woven into a shirt can monitor vital signs
Sensors woven into a shirt can monitor vital signs
MIT researchers have developed a way to incorporate electronic sensors into stretchy fabrics, allowing them to create shirts or other garments that could be used to monitor vital signs such as temperature, respiration, and heart rate. The sensor-embedded garments, which are machine washable, can be customized to fit close to the body of the person wearing them.

Physics - Materials Science - 21.04.2020
Cool down fast to advance quantum nanotechnology
Cool down fast to advance quantum nanotechnology
Rapidly cooling magnon particles proves a surprisingly effective way to create an elusive quantum state of matter, called a Bose-Einstein condensate. The discovery can help advance quantum physics research and is a step towards the long-term goal of quantum computing at room temperature. An international team of scientists have found an easy way to trigger an unusual state of matter called a Bose-Einstein condensate.

Materials Science - Physics - 16.04.2020
Shedding light on dark traps
Researchers pinpoint the origin of defects that sap the performance of next-generation solar technology. We now know what to target to bring up the performances of perovskites. Samuel Stranks A multi-institutional collaboration, co-led by scientists at the University of Cambridge and Okinawa Institute of Science and Technology Graduate University (OIST), has identified the source of efficiency-limiting defects in potential materials for next-generation solar cells and LEDs.

Physics - Materials Science - 16.04.2020
Advance could enable remote control of soft robots
An applied magnetic field (in blue) can cause magnetized particles embedded in a soft material to rearrange themselves into new patterns. By harnessing this phenomenon, researchers can fine-tune the soft material's properties. Image courtesy Xin Zou, Grainger Institute for Engineering Soft materials, such as rubber or polymers that can endure drastic changes to their shape, are promising for applications where flexibility and shapeshifting abilities are paramount.

Materials Science - Chemistry - 16.04.2020
Seeing 'Under the Hood' in Batteries
Seeing ’Under the Hood’ in Batteries
From next-gen smartphones to longer-range electric cars and an improved power grid, better batteries are driving tech innovation. And to push batteries beyond their present-day performance, researchers want to see "under the hood" to learn how the individual ingredients of battery materials behave beneath the surface.

Physics - Materials Science - 14.04.2020
Nano-scientists get new large-scale equipment
Nano-scientists get new large-scale equipment
Production of minute structures with gold and silicon ions / 840,000 euros from the German Research Foundation and the state of North Rhine-Westphalia Investigating and developing nanosystems - i.e. structures which are a thousand times smaller than the diameter of a human hair - is something which occupies researchers collaborating from a variety of disciplines at the University of Münster.

Physics - Materials Science - 10.04.2020
First sighting of mysterious Majorana fermion on a common metal
First sighting of mysterious Majorana fermion on a common metal
Physicists at MIT and elsewhere have observed evidence of Majorana fermions - particles that are theorized to also be their own antiparticle - on the surface of a common metal: gold. This is the first sighting of Majorana fermions on a platform that can potentially be scaled up. The results, published in the Proceedings of the National Academy of Sciences , are a major step toward isolating the particles as stable, error-proof qubits for quantum computing.

Physics - Materials Science - 09.04.2020
World's most complex microparticle: A synthetic that outdoes nature's intricacy
World’s most complex microparticle: A synthetic that outdoes nature’s intricacy
Synthetic microparticles more intricate than some of the most complicated ones found in nature have been produced by a University of Michigan-led international team. They also investigated how that intricacy arises and devised a way to measure it. The findings pave the way for more stable fluid-and-particle mixes, such as paints, and new ways to twist light-a prerequisite for holographic projectors.

Physics - Materials Science - 08.04.2020
A new lightsource for the chip industry
A new lightsource for the chip industry
Photonic chips made possible by light-emitting silicon-germanium alloys For the past 50 years, researchers around the globe have been looking for a way to make lasers with silicon or germanium. A team from the Technical University of Eindhoven (TU/e) and the Technical University of Munich (TUM) has now succeeded in developing a light-emitting, silicon-germanium alloy.

Materials Science - 03.04.2020
Artificial fog helps lasers shine brighter
Laser-based lights could replace lightbulbs thanks to an artificial 'fog' that scatters laser light, producing high brightness at low power. The new and improved laser-based lights could be used anywhere from indoor lighting and projectors to car headlights and outdoor floodlights. As they produce high brightness at low power, they would be more energy-efficient than regular lightbulbs or LEDs.