Materials Science

Results 41 - 60 of 758.

Materials Science - 30.06.2021
Prestressed plasters for old buildings
Prestressed plasters for old buildings
The technology of stabilizing concrete structures with carbon fiber-reinforced polymers, thus helping them to last longer, was developed decades ago; among others at Empa. Today, researchers in Dübendorf are working on a new variant with prestressed lamellas - with good prospects for practical application.

Physics - Materials Science - 29.06.2021
This Crystal Impurity Is Sheer Perfection
This Crystal Impurity Is Sheer Perfection
Scientists at Berkeley Lab, UC Berkeley design 3D-grown material that could speed up production of new technologies for smart buildings and robotics Crystallization is one of the most fundamental processes found in nature - and it's what gives minerals, gems, metals, and even proteins their structure.

Computer Science - Materials Science - 29.06.2021
'Edge of chaos' opens pathway to artificial intelligence discoveries
’Edge of chaos’ opens pathway to artificial intelligence discoveries
Some neuroscience theories suggest the human brain operates best 'at the edge of chaos'. Now scientists in Australia and Japan have found that keeping a nanowire network at the edge of becoming chaotic is the best state for it to produce useful results. Scientists at the University of Sydney and Japan's National Institute for Materials Science ( NIMS ) have discovered that an artificial network of nanowires can be tuned to respond in a brain-like way when electrically stimulated.

Environment - Materials Science - 25.06.2021
Crown ethers improve perovskite solar cell stability
Crown ethers improve perovskite solar cell stability
Scientists have used an unprecedented method with multimodal host-guest complexation to greatly improve the stability of perovskite solar cells while also reducing the release of lead into the environment. Perovskites are hybrid compounds made from metal halides and organic constituents, and show great potential in a range of applications, e.g. LED lights, lasers, and photodetectors.

Materials Science - Physics - 24.06.2021
Nano-Architected Material Resists Impact Better Than Kevlar
Thinner than a human hair, new material can absorb impacts from microparticles traveling at supersonic speeds Engineers at Caltech, MIT, and ETH Zürich have developed a nano-architected material made from tiny carbon struts that is, pound for pound, more effective at stopping a projectile than Kevlar, a material commonly used in personal protective gear.

Materials Science - Physics - 23.06.2021
Low-cost imaging technique shows how smartphone batteries could charge in minutes
Low-cost imaging technique shows how smartphone batteries could charge in minutes
Researchers have developed a simple lab-based technique that allows them to look inside lithium-ion batteries and follow lithium ions moving in real time as the batteries charge and discharge, something which has not been possible until now. This technique could be an important piece of the puzzle in the development of next-generation batteries Christoph Schnedermann Using the low-cost technique, the researchers identified the speed-limiting processes which, if addressed, could enable the batteries in most smartphones and laptops to charge in as little as five minutes.

Environment - Materials Science - 23.06.2021
Harvesting drinking water from humidity around the clock
Harvesting drinking water from humidity around the clock
Researchers at ETH Zurich have developed a condenser for countries where water is in short supply. Theirs is the first zero-energy solution for harvesting water from the atmosphere throughout the 24-hour daily cycle. It relies on a self-cooling surface and a special radiation shield. Fresh water is scarce in many parts of the world and must be obtained at great expense.

Physics - Materials Science - 23.06.2021
Argonne National Laboratory celebrates 75 years of scientific discovery
The nation's first national lab continues to make breakthroughs across science, engineering Argonne National Laboratory traces its birth from a secret mission-the Manhattan Project during World War II-to create the world's first self-sustaining nuclear chain reaction.

Physics - Materials Science - 21.06.2021
Solar energy collectors grown from seeds
Engineers create seeds for growing near-perfect 2D perovskite crystals Rice University engineers have created microscopic seeds for growing remarkably uniform 2D perovskite crystals that are both stable and highly efficient at harvesting electricity from sunlight. Rice University chemical engineering graduate student Siraj Sidhik holds a container of 2D perovskite "seeds” (left) and a smaller vial containing a solution of dissolved seeds that can be used to produce thin films for use in highly efficient optoelectronic devices like high efficiency solar panels.

Materials Science - 18.06.2021
Revisiting Steel
Carnegie Mellon University Advanced research allows CMU team to lower carbon footprint while accessing unique metallic properties For as long as humanity has been using steel, one would think that we know everything there is to know about making it. Well, we don't, as evidenced by the interest in the research paper, "A Review of Steel Processing Considerations for Oxide Cleanliness." It was one of the top-10 most-downloaded papers from the journal Metallurgical and Materials Transactions 50 th Anniversary Collection in 2020.

Physics - Materials Science - 17.06.2021
Tailored laser fields reveal properties of transparent crystals
Tailored laser fields reveal properties of transparent crystals
Research team led by the University of Göttingen investigates surface magnetisation The surface of a material often has properties that are very different from the properties within the material. For example, a non-conducting crystal, which actually exhibits no magnetism, can show magnetisation restricted to its surface because of the way the atoms are arranged there.

Physics - Materials Science - 17.06.2021
Using DNA For Tiny Tech
Carnegie Mellon University Ph.D. candidate Tito Babatunde and her advisors combine expertise to optimize designs for DNA origami nanostructures When it comes to creating nanotechnology, one cannot simply build it with their hands. Instead, researchers need something nano-sized that is able to self-assemble.

Life Sciences - Materials Science - 16.06.2021
Genetically Engineered Nanoparticle Delivers Dexamethasone Directly to Inflamed Lungs
Nanoengineers at the University of California San Diego have developed immune cell-mimicking nanoparticles that target inflammation in the lungs and deliver drugs directly where they're needed. As a proof of concept, the researchers filled the nanoparticles with the drug dexamethasone and administered them to mice with inflamed lung tissue.

Materials Science - 16.06.2021
Honeycomb plastics offer a PEEK into future of smart prosthetic design
A new form of lightweight, impact-resistant plastic-based 'honeycomb' structures which can sense when they have been damaged could find use in new forms of 'smart' prosthetics and medical implants, its inventors suggest. In a new paper published today in the journal Materials & Design , a University of Glasgow-led team of engineers describe how they have used 3D printing techniques to add new properties to a plastic known as polyether ether ketone, or PEEK.

Physics - Materials Science - 14.06.2021
Oxygen loss saps a lithium-ion battery’s voltage
Measuring the process in unprecedented detail gives them clues to how to minimize the problem and protect battery performance. When lithium ions flow in and out of a battery electrode during charging and discharging, a tiny bit of oxygen seeps out and the battery's voltage - a measure of how much energy it delivers - fades an equally tiny bit.

Physics - Materials Science - 09.06.2021
Mixing solutions in the world’s smallest test tubes
Researchers based at The University of Manchester have demonstrated a new method for imaging live chemical reactions with atomic resolution using nanoscale test tubes created using two-dimensional (2D) materials. The ability to observe solution-based chemical reactions with sub-nanometre resolution in real time has been highly sought after since the invention of the electron microscope 90 years ago.

Physics - Materials Science - 04.06.2021
Nanoengineering integrates crystals that don't usually get along
Nanoengineering integrates crystals that don’t usually get along
A team of computational and experimental engineers demonstrate a blueprint for building materials with new properties from nanocrystals A blueprint for designing new materials using difficult combinations of nanocrystals has been developed by a team of researchers at the University of Pennsylvania and the University of Michigan.

Materials Science - Health - 03.06.2021
Filter membrane renders viruses harmless
Researchers at ETH Zurich are developing a new filter membrane that is highly efficient at filtering and inactivating a wide variety of air-borne and water-borne viruses. Made from ecologically sound materials, the membrane has an appropriately good environmental footprint. Viruses can spread not only via droplets or aerosols like the new coronavirus, but in water, too.

Physics - Materials Science - 01.06.2021
Why deep freezing iron-based materials makes them both magnetic and superconducting
Why deep freezing iron-based materials makes them both magnetic and superconducting
Physicists at Bath have uncovered a new mechanism for enabling magnetism and superconductivity to co-exist in the same material. Last updated on Thursday 3 June 2021 Physicists at the University of Bath, in collaboration with researchers from the USA, have uncovered a new mechanism for enabling magnetism and superconductivity to co-exist in the same material.

Innovation - Materials Science - 28.05.2021