Materials Science

Results 301 - 320 of 867.

Materials Science - Chemistry - 01.10.2020
Ecological power storage battery made of vanillin
Ecological power storage battery made of vanillin
Researchers at TU Graz have found a way to convert the aromatic substance vanillin into a redox-active electrolyte material for liquid batteries. The technology is an important step towards ecologically sustainable energy storage. TU Graz researcher Stefan Spirk has found a way to replace liquid electrolytes in redox flow batteries by vanillin.

Materials Science - Health - 30.09.2020
How local forces deform the lipid membranes
How local forces deform the lipid membranes
ETH Zurich researchers have been able to show why biological cells can take on such an astonishing variety of shapes: it has to do with how the number and strength of  local forces acting on the cell membrane from within. This knowledge feeds into the development of better minimal model systems and artificial cells.

Physics - Materials Science - 30.09.2020
An Innovative Pattern: Scientists Rewrite Rules for 2D Electronics
An Innovative Pattern: Scientists Rewrite Rules for 2D Electronics
Near-field scanning microscope image of nanocircuits "written" into a 2D device made of boron nitride and graphene. (Credit: Alex Zettl/Berkeley Lab) A research team led by Alex Zettl , senior faculty scientist in Berkeley Lab's Materials Sciences Division and professor of physics at UC Berkeley, has developed a new technique for fabricating tiny circuits from ultrathin materials for next-generation electronics, such as rewritable, low-power memory circuits.

Materials Science - Environment - 29.09.2020
Filtering radioactive elements from water
Filtering radioactive elements from water
Some time ago, ETH researchers developed a filter membrane made out of whey proteins and activated carbon. In a new study, they now demonstrate just how efficient this membrane is at filtering radioactive elements from contaminated water. The nuclear accident in Fukushima remains etched into people's memories.

Materials Science - Chemistry - 28.09.2020
UChicago chemists invent way to customize compounds just a few atoms thick
Changing the chemistry of a compound is difficult by itself, but modifying materials only a few atoms thick is its own challenge. A group of University of Chicago scientists announced an innovative method to tailor the surface groups of a class of compounds known as MXenes. Surface groups are the elements or compounds on the surface of a material.

Chemistry - Materials Science - 25.09.2020
New storage battery more efficient and heat-resistant
New storage battery more efficient and heat-resistant
Chemists at the University of Jena develop new polymer electrolytes for redox flow batteries Light The share of energy from renewable sources is constantly on the rise in Germany. At the beginning of 2020, for the first time ever, renewable energy was able to cover more than half of the electricity consumed in Germany.

Physics - Materials Science - 24.09.2020
Revolutionizing the Cloud
Revolutionizing the Cloud
Physicists investigate the magnetization dynamic of rare earths with regard to their suitability for use in ultrafast data storage No 167/2020 from Sep 24, 2020 Researchers from Freie Universität Berlin and universities in Prague, Uppsala, and Konstanz contribute to basic understanding of the magnetization dynamic of a material with the high magnetic anisotropy that is decisive for digital data storage. Along with physicist Professor Ulrich Nowa

Physics - Materials Science - 23.09.2020
Nanostructures with a unique property
Nanostructures with a unique property
Nanoscale vortices known as skyrmions can be created in many magnetic materials. For the first time, researchers at PSI have managed to create and identify antiferromagnetic skyrmions with a unique property: critical elements inside them are arranged in opposing directions. Scientists have succeeded in visualising this phenomenon using neutron scattering.

History / Archeology - Materials Science - 23.09.2020
Chromium steel was first made in ancient Persia
Chromium steel - similar to what we know today as tool steel - was first made in Persia, nearly a millennium earlier than experts previously thought, according to a new study led by UCL. The discovery, published in the Journal of Archaeological Science , was made with the aid of a number of medieval Persian manuscripts, which led the researchers to an archaeological site in Chahak, southern Iran.

Physics - Materials Science - 22.09.2020
Scientists create world’s smallest ’refrigerator’
This electron microscope image shows the cooler's two semiconductors - one flake of bismuth telluride and one of antimony-bismuth telluride - overlapping at the dark area in the middle, which is where most of the cooling occurs. The small "dots" are indium nanoparticles, which the team used as thermometers.

Physics - Materials Science - 17.09.2020
"Honey, I shrunk the detector"
Silicon chip (approx. 3 mm x 6 mm) with multiple detectors. The fine black engravings on the surface of the chip are the photonics circuits interconnecting the detectors (not visible with bare eyes). In the background a larger scale photonics circuit on a silicon wafer. Researchers have developed the world's smallest ultrasound detector Researchers at the Technical University of Munich (TUM) and Helmholtz Zentrum München have developed the world's smallest ultrasound detector.

Environment - Materials Science - 17.09.2020
Effective Pathway to Convert Greenhouse Gas into Valuable Products
A research team from Caltech and the UCLA Samueli School of Engineering has demonstrated a promising way to efficiently convert carbon dioxide into ethylene-an important chemical used to produce plastics, solvents, cosmetics, and other important products globally. The scientists developed nanoscale copper wires with specially shaped surfaces to catalyze a chemical reaction that reduces greenhouse gas emissions while simultaneously generating ethylene-a valuable chemical.

Materials Science - Life Sciences - 16.09.2020
Anti-reflective coating inspired by fly eyes
Anti-reflective coating inspired by fly eyes
A team from the University of Geneva has artificially reproduced a nanoscale coating on different types of surfaces that usually covers the eyes of fruit flies, and which provides anti-reflective, anti-adhesive properties. The eyes of many insects, including the fruit fly, are covered by a thin and transparent coating made up of tiny protuberances with anti-reflective, anti-adhesive properties.

Materials Science - Chemistry - 14.09.2020
Predicting the slow death of lithium-ion batteries
A new model offers a way to predict the condition of a battery's internal systems in real-time with far more accuracy than existing tools. In electric cars, the technology could improve driving range estimates and prolong battery life. Batteries fade as they age, slowly losing power and storage capacity.

Computer Science - Materials Science - 11.09.2020
Machine-learning helps sort out massive materials' databases
EPFL and MIT scientists have used machine-learning to organize the chemical diversity found in the ever-growing databases for the popular metal-organic framework materials. Metal-organic frameworks (MOFs) are a class of materials that contain nano-sized pores. These pores give MOFs record-breaking internal surface areas, which can measure up to 7,800 m2 in a single gram of material.

Life Sciences - Materials Science - 11.09.2020
Altgold Helps Build Silk Scaffolding for Tissue
SURF student supports new 3D printing technique for bioengineering Carnegie Mellon University undergraduate Tahlia Altgold makes biomedical research using silk run more smoothly. "Silk is a really incredible biomedical material that's been used for a long time in things like sutures,” said Altgold, a junior majoring in materials science and biomedical engineering.

Physics - Materials Science - 10.09.2020
Computational modelling explains why blues and greens are brightest colours in nature
Researchers have shown why intense, pure red colours in nature are mainly produced by pigments, instead of the structural colour that produces bright blue and green hues.

Materials Science - Chemistry - 03.09.2020
New Analytical Methods for Longer-Lasting Lithium-ion Batteries
New Analytical Methods for Longer-Lasting Lithium-ion Batteries
How can the lithium-ion battery (LIB) be further improved? To answer this question, MEET scientists around Lenard Hanf developed new methods for capillary electrophoresis. For the first time, this enables a detailed analysis of the transition metal dissolution from LIB cathode materials or the current collector - such as manganese or copper.

Chemistry - Materials Science - 01.09.2020
A laser cutter could create new wave of bioelectronics
On a simple coffee table sits an inexpensive commercial laser cutter, usually meant for modifying wood or plastic. However, in the lab of University of Chicago scientists Vishnu Nair and Bozhi Tian, what comes out is not engraved wood but a small bioelectronic device that could save lives. It all starts with a compound called polydimethylsiloxane, or PDMS, which is a type of elastomer-a very elastic, stretchable material. However, a laser can transform the PDMS into a dense silicon carbide layer that is useful for electronics.

Physics - Materials Science - 31.08.2020
Attention, the electron is too fast!
Attention, the electron is too fast!
Why do different measurements of material properties sometimes give different results? A research team led by the TU Vienna has now found an important answer. It is very hard to take a photo of a hummingbird flapping its wings 50 times per second. The exposure time has to be much shorter than the characteristic time scale of the wing beat, otherwise you will only see a colorful blur.