Materials Science

Results 561 - 580 of 842.

Materials Science - Chemistry - 26.08.2019
Researchers flip how electrical signals move liquid droplets
When medical laboratories analyze blood samples for signs of disease, they sometimes use instruments that rely on a technology called digital microfluidics. The technique uses electric signals to pull tiny droplets of the sample across a surface so they can be analyzed. One drawback of the process is that the electric signals tend to damage the surface that the droplets travel over, which can cause the device to fail unexpectedly or deteriorate over time.

Physics - Materials Science - 21.08.2019
A hallmark of superconductivity, beyond superconductivity itself
A hallmark of superconductivity, beyond superconductivity itself
'Electron pairing' found well above superconductor's critical temperature Physicists have found "electron pairing,” a hallmark feature of superconductivity, at temperatures and energies well above the critical threshold where superconductivity happens. Rice University's Doug Natelson , co-corresponding author of a paper about the work in this week's Nature, said the discovery of Cooper pairs of electrons "a bit above the critical temperature won't be 'crazy surprising' to some people.

Materials Science - Chemistry - 20.08.2019
Technique could make better membranes for next-generation filtration
Deriving drinkable water from seawater, treating wastewater and conducting kidney dialysis are just a few important processes that use a technology called membrane filtration. The key to the process is the membrane filter — a thin, semi-porous film that allows certain substances such as water to pass through while separating out other, unwanted substances.

Physics - Materials Science - 19.08.2019
Hydrogen induces high-temperature superconductivity in a monolayer material
UAntwerp researchers from the CMT group, Dr Jonas Bekaert and Prof Milorad Milosevic, in collaboration with Swedish researchers have predicted that a atomically thin layer of hydrogen will boost the critical temperature of a thin superconductor to above a hundred kelvin. Hydrogen-rich bulk superconducting materials have recently exhibited record-breaking critical temperatures, nearing the ambient temperature and thereby promising a major technological impact on the society.

Health - Materials Science - 15.08.2019
Plasma coating developed to decrease bone implant rejections
Plasma coating developed to decrease bone implant rejections
One million Australians have undergone joint replacement surgery and the numbers are growing. University of Sydney researchers have developed a bone implant coating that could lead to improved implant outcomes. An international research project, led by the University of Sydney's School of Aerospace, Mechanical and Mechatronic Engineering and the School of Physics in collaboration with UMC Utrecht and the Heart Research Institute and three other research partners, has developed a new plasma coating for bone implants with the aim of decreasing complications.

Physics - Materials Science - 14.08.2019
Physicists Develop "Time Machine" for Materials Science
Physics experiments are often time-consuming and expensive. Sometimes scientists do not realize until the very end that they have been using the wrong calibration for measurements the whole time. What if there were a way to go back in time to the start of the experiment and re-examine the data? Researchers at Martin Luther University Halle-Wittenberg (MLU), Freie Universität Berlin, and the Technical University of Munich (TUM) hope to create a machine that would make that possible.

Physics - Materials Science - 13.08.2019
How do atoms vibrate in graphene nanostructures?
How do atoms vibrate in graphene nanostructures?
Innovative new electron spectroscopy technique pushes the limits of Nanospectroscopy for materials design In order to understand advanced materials like graphene nanostructures and optimize them for devices in nano-, optoand quantum-technology it is crucial to understand how phonons - the vibration of atoms in solids - influence the materials' properties.

Chemistry - Materials Science - 12.08.2019
Supercapacitors turbocharged by laxatives
An international team of scientists, including a professor of chemistry from the University of Bristol, has worked out a way to improve energy storage devices called supercapacitors, by designing a new class of detergents chemically related to laxatives. Their paper, published today , explains why these detergents, called ionic liquids, are better electrolytes than current materials and can improve supercapacitors.

Environment - Materials Science - 12.08.2019
Mapping the Energetic Landscape of Solar Cells
Mapping the Energetic Landscape of Solar Cells
A new spectroscopic method now makes it possible to measure and visualise the energetic landscape inside solar cells based on organic materials. It was developed by a research team led by Yana Vaynzof, a physicist at Heidelberg University. This novel visualisation technique enables scientists to study the physical principles of organic photovoltaics with extreme precision and to better understand processes such as energetic losses.

Physics - Materials Science - 09.08.2019
Scientists can now control thermal profiles at the nanoscale
Scientists can now control thermal profiles at the nanoscale
At human scale, controlling temperature is a straightforward concept. Turtles sun themselves to keep warm. To cool a pie fresh from the oven, place it on a room-temperature countertop. At the nanoscale - at distances less than 1/100th the width of the thinnest human hair - controlling temperature is much more difficult.

Materials Science - Physics - 09.08.2019
Bending the rules: A revolutionary new way for metals to be malleable
For nearly 100 years, scientists thought they understood everything there was to know about how metals bend. They were wrong. Materials science and engineering researchers at the University of Wisconsin-Madison have demonstrated that the rules of metal-bending aren't so hard and fast after all. They described their findings Aug.

Materials Science - 06.08.2019
How can robots land like birds?
Birds can perch on a wide variety of surfaces, thick or thin, rough or slick. But can they find stable footing if a branch is covered in Teflon? In the interest of making better robots, Stanford researchers found out. Under the watchful eyes of five high-speed cameras, a small, pale-blue bird named Gary waits for the signal to fly.

Materials Science - Environment - 05.08.2019
Five cool things our surface scientists do
Surface science can make a big difference to our health, well-being and environment. Our surface scientists at Durham have been working on a whole range of applications that have already changed our lives in some way (think mobile phones and puddles) and could make a real difference to people around the world, particularly in developing countries.

Materials Science - Health - 05.08.2019
Lessons of conventional imaging let scientists see around corners
UW graduate students (left to right) Xiaochun Liu, Ji-Hyun Nam and Toan Le work with assistant professor and principal investigator Andreas Velten (right) in the Computational Optics lab. Their project is designed to create non-line-of-sight images using reflected laser light. Photo: Bryce Richter Along with flying and invisibility, high on the list of every child's aspirational superpowers is the ability to see through or around walls or other visual obstacles.

Physics - Materials Science - 01.08.2019
From Japanese basket weaving art to nanotechnology with ion beams
From Japanese basket weaving art to nanotechnology with ion beams
Ultradense arrays of magnetic quanta in high-temperature superconductors The properties of high-temperature superconductors can be tailored by the introduction of artificial defects. An international research team around physicist Wolfgang Lang at the University of Vienna has succeeded in producing the world's densest complex nano arrays for anchoring flux quanta, the fluxons.

Materials Science - Physics - 31.07.2019
"Frustrated" ions for solid-state batteries
An international team involving researchers from TU Graz has published research into a new solid-state electrolyte for batteries. The material exhibits one of the fastest lithium mobility processes ever measured in a lithium-ion conductor. Pictures to download at the end of the text Solid-state batteries are currently the most promising technology helping to pave the way for the breakthrough of electric mobility.

Materials Science - Environment - 29.07.2019
Generating energy from wastewater
A new battery made from affordable and durable materials generates energy from places where salt and fresh waters mingle. The technology could make coastal wastewater treatment plants energy-independent and carbon neutral. Salt is power. It might sound like alchemy, but the energy in places where salty ocean water and freshwater mingle could provide a massive source of renewable power.

Materials Science - Computer Science - 29.07.2019
Digitizing and replicating the world of materials
A team of EPFL researchers has set itself the lofty goal of building the biggest-ever database that digitizes the visual appearance of all natural and synthetic materials in the world.

Environment - Materials Science - 29.07.2019
Unravelling corrosion
Unravelling corrosion
ETH researchers have succeeded in elucidating how and at what rate steel corrodes in a variety of porous materials. Their findings help enable the breakthrough of new, environmentally friendly types of cement. The rate at which steel corrodes in concrete or other porous materials is crucial to a large number of technological applications, such as underground pipelines or steel-reinforced concrete bridges.

Physics - Materials Science - 26.07.2019
Crystal With a Twist: Scientists Grow Spiraling New Material
With a simple twist of the fingers, one can create a beautiful spiral from a deck of cards. In the same way, scientists at Berkeley Lab and UC Berkeley have created new inorganic crystals made of stacks of atomically thin sheets that unexpectedly spiral like a nanoscale card deck. Their surprising structures, reported in a  new study  in the journal Nature, may yield unique optical, electronic and thermal properties, including superconductivity, the researchers say.