Articles tagged with Metals
Researchers at Carnegie Institution have synthesized pure samples of Si-III, a semiconductor with an extremely narrow band gap, narrower than diamond-like silicon crystals. This discovery may lead to unpredictable technological breakthroughs in fields like solar energy and electronics.
Scientists at ORNL and NCSU report growing graphene nanoribbons without a metal substrate, enabling controlled creation of interfaces with different electronic properties. This breakthrough addresses limitations in graphene's application in digital electronics.
A recent study by the University of the Basque Country found that not all metals in sediments directly affect human health, but only a fraction can be incorporated into the body. The researchers simulated metal release in the gastrointestinal tract and found that urban waste water contributes to bioaccessible metals.
Patients receiving Absorb stent showed outcomes similar to those of Xience metal stents between years one and two, but elevated risk of adverse outcomes at two years in smaller vessels. The study highlights the importance of using appropriately sized vessels and refined procedural techniques for optimal results.
Researchers at North Carolina State University have developed composite metal foams with enhanced properties, including reduced armor-piercing bullet penetration and effective radiation shielding. The new data provides a comprehensive overview of the materials' performance in various tests, including high-speed impacts and cyclic loading.
Researchers at the University of Manchester have discovered a potential method for separating toxic elements from nuclear waste using arsenic molecules. The breakthrough, published in Nature Communications, could make nuclear waste clean-up safer and more effective.
Researchers developed a fluorescent polymer that can detect high levels of mercury in fish, which can lead to reduced fetal growth and placental development. The study found increased mercury levels in swordfish and tuna, with no mercury detected in farmed salmon.
Researchers at RMIT University have developed a new technique using liquid metals to create ultra-thin electronic chips, paving the way for the next generation of electronics. The process enables the production of large wafers just 1.5 nanometres in depth, increasing processing power and reducing costs.
A University of Central Florida professor is collaborating with NASA to study the extraction of metals from Martian soil using molten regolith electrolysis. This process could produce oxygen and molten metals vital for future human space exploration.
Carnegie Mellon researchers develop 'thubber,' a stretchable, thermal conductive material with metal-like properties. The material enables rapid heat dissipation in applications like wearable computing and soft robotics.
A study published in Epidemiology found that people on a gluten-free diet had higher concentrations of arsenic and mercury in their urine and blood compared to those who did not eat gluten-free. The study's findings suggest that a gluten-free diet may pose health risks due to increased exposure to toxic metals.
Researchers at FAU Erlangen-Nürnberg have developed a new sheet bulk metal forming process that combines two manufacturing methods to create complex functional components with wider applications. The project aims to improve the surface contact, reduce tool wear, and enable batch production for industry partners.
Electrical engineers at Duke University have created a metal-free metamaterial that can absorb electromagnetic energy, opening doors for applications in imaging, sensing, and lighting. The device's ability to absorb energy without heating up has direct implications for thermal imaging devices and efficient lighting systems.
Researchers successfully demonstrate metallic properties in hydrogen at pressures between 465-495 GPa and 5.5 Kelvin. The discovery has potential implications for high-temperature superconductivity and energy production.
A study across 10 countries found that aluminum cookware made from scrap metal contaminates food with high levels of lead, arsenic, and cadmium. The investigation reveals a significant risk to public health, particularly for children, who may experience IQ reduction, brain damage, and cardiovascular disease.
Researchers propose a new class of topological metals with unique electronic properties, including relativistic behavior and perfect compensation. This classification could help scientists find other materials with similar properties.
Researchers used bright X-rays to observe the one-step solution-coating process of perovskite material, identifying a crucial intermediate solid state. This discovery highlights the importance of solvent-solute interactions in halide perovskites, which significantly impacts film formation behavior and solar cell performance.
A new type of light-enhancing optical cavity has been developed, representing a step toward brighter single-photon sources. This breakthrough could help propel quantum-based encryption and secure networks.
Researchers at ICFO have created a multilayer transparent conductor with low resistance and high optical transmission, exceeding ITO's performance. The new material offers fourfold improvement in figure of merit and superior mechanical flexibility.
A team led by Stéphane Dorbolo found that a disk of ice becomes highly mobile due to a levitating layer of water between it and the smooth surface on which it rests and melts. By controlling the flow dynamics of the melted ice, they can direct its motion.
Scientists at TU Wien develop new approach to controlling electron emission using two laser pulses fired at a metal tip. They demonstrate the ability to switch electron emission on and off on extremely short time scales. This breakthrough opens up possibilities for controlled x-ray generation.
A new study found that plastic stents provide similar outcomes to metal stents in patients with resectable malignant biliary obstruction. The study suggests that plastic stents may be a more cost-effective option, making them a preferable choice for patients with this condition.
A team of researchers at the University of Michigan created a window in a battery to study dendrites, which cause fires in next-generation lithium metal batteries. They observed that small dendrites can be stable and even help prolong battery life, but large ones can reduce performance and raise safety concerns.
Researchers at the University of Missouri are exploring alternative materials to recycle metals used in radioisotope production. They found that adding sulfides to tungsten, osmium, and molybdenum can recover up to 93% of the metals while producing needed radioisotopes, potentially cutting healthcare costs.
Researchers have created a hydrogel-elastomer hybrid that can prevent barnacles from sticking to metal hulls, reducing fuel costs for the Navy. The material is soft, slippery, and retains moisture, providing a long-lasting solution to biofouling.
Researchers at Northwestern University have developed flexible, biodegradable stents that can be customized for a patient's specific anatomy using 3D printing techniques. The stents are designed to minimize complications and improve healing processes in blood vessels.
Researchers at the University of Melbourne develop a novel approach to assemble nano-objects into complex architectures using polyphenol-coated building blocks. The technique enables the creation of 3D superstructures with enhanced chemical diversity and structural flexibility.
Researchers at MIT have developed a new microencapsulation technique that produces uniform, multilayered particles with high consistency. The technique uses 3D printing to create emitters that encapsulate materials, enabling efficient production of particles for pharmaceuticals and other applications.
Researchers at Oak Ridge National Laboratory develop direct-write technology to create nanoscale patterns in metallic ink, allowing for tailored material properties and customized architectures. The technique uses a scanning transmission electron microscope to control the deposition of metal onto a silicon microchip.
Researchers from Aalto University have made a breakthrough in controlling the motion of multiple objects on a vibrating plate using acoustic sources. They can simultaneously move up to six objects towards desired targets by playing carefully constructed melodies.
A survey of 77 atmospheric scientists found no evidence to support the 'chemtrails' conspiracy theory, which claims a secret government program is releasing toxic chemicals into the air. The researchers cited methods for collecting samples as a possible cause of faulty results.
An international team predicts several new types of quantum particles in materials, distinguished by intrinsic properties such as responses to magnetic and electric fields. The researchers propose that these fermions can appear in the bulk of materials, enabling a more systematic way to determine whether a system is a protected metal.
Researchers at Carnegie Mellon University and EPFL develop a computational design tool that enables designers to fully exploit the unique property of auxetic materials, which can expand uniformly in two dimensions. The tool allows for the creation of complex 3D shapes using flat sheets of plastic or metal.
The IBS team successfully detected hot electrons in a liquid interface, expanding the possibilities for catalytic reactions. This breakthrough may lead to highly efficient devices for applications such as fuel cells and artificial photosynthesis.
Researchers in South Korea have developed ultra-thin photovoltaics with a record-breaking flexibility, allowing them to wrap around small objects. The new method uses transfer printing instead of etching and produces flexible solar cells with a smaller amount of materials.
Astronomers at Indiana University have discovered a small blue galaxy, Leoncino, which contains the lowest level of heavy chemical elements (metals) ever observed in a gravitationally bound system. This finding is exciting as it could help contribute to a quantitative test of the Big Bang theory.
Research reviewing 434 patients with metal on metal total hip replacements found a revision rate of 16.4%, significantly higher than expected. The study suggests that manufacturing issues, particularly with the taper surface and liner thickness, may be to blame for early failure.
Researchers at NREL discovered a way to tune the Schottky barrier in 2D semiconductors using certain metals as electrodes. This adjustment reduces power losses and improves device performance by suppressing metal-induced gap states and Fermi level pinning effects.
A team of engineers and physicists at the University of Wisconsin-Madison created a compound that combines polar and metallic properties, defying scientific conventions. The new material exhibits both insulating and conducting properties, paving the way for devices with simultaneous electrical, magnetic, and optical functions.
A team of researchers at MIT found that spinning particles, even when separated by tens of times their size, will ultimately migrate toward each other due to long-range interactions. The phenomenon was observed in a liquid medium with inert particles and has potential applications in biological systems and synthetic materials.
Researchers found that applying a magnetic field to PdCoO2, a non-magnetic metal, increases its electrical conductivity and reduces resistance. The phenomenon was linked to the material's layered crystal structure and topological characteristics.
A team of chemists has developed a new method to make metal nanoframe catalysts, which could lead to improved hydrogen fuel production and reduced usage of precious materials. The breakthrough involves creating ruthenium nanocrystals with a unique crystal structure, increasing their surface area and catalytic activity.
A new type of lens for focusing terahertz radiation has been developed by Brown University researchers, performing as well or better than existing lenses. The device uses an array of stacked metal plates to focus terahertz waves, allowing for improved transmission and versatility in different wavelengths.
Researchers from Brown University have developed a technique that eliminates the need for highly specialized external light sources, enabling more versatile and compact devices. This breakthrough could lead to the creation of hand-held environmental sensors and biosensors that can perform complete blood workups from single drops.
A group of researchers created a unique 1D nano electronic system on the surface of a solid and observed its electronic state using photo-emitted electrons. This discovery will help elucidate the mystery of unique electronic properties of 1D nano metals.
Researchers developed a theory that combines vibrations in solid materials and liquid solidification, predicting sound waves formed when compression relaxes. Fast solidification creates large defects, resulting in a 'crackling' sound wave.
Dr. Paul Leu's CAREER award will support research on flexible metals for thin, efficient solar cells. His work aims to develop new hierarchical structures for adaptive transparent conductors and solar cells.
Metallic glue made from nanorods sets at room temperature and requires little pressure to seal, offering high thermal and electrical conductivity. The technology has multiple applications in the electronics industry, potentially replacing traditional solders and thermal grease.
Researchers developed a nanostructured metal coating that lets light through without hindering electrical access, outperforming flat surfaces. The coating combines enhanced optical transmission with electrical contact, enabling higher-efficiency optoelectronic devices.
Researchers at the University of Basel successfully transport electrons from a superconductor through a quantum dot into a metal with normal conductivity. The team measured discrete resonances, confirming theoretical predictions and demonstrating the phenomenon's applicability to quantum technology applications.
Researchers developed a flexible phototransistor that exceeds previous parameters, including sensitivity and response time. The innovative design enables improved performance in various products, such as digital cameras and night-vision goggles.
Researchers at Australian National University have successfully created a star-shaped molecule called [5]radialene, which was previously deemed too unstable. This breakthrough could lead to more efficient ways of producing medicinal agents, with the chemical industry worth nearly $1 trillion.
Researchers have found that repeated small stretching of nanoscale metal pieces can eliminate crystal defects in its crystalline structure, strengthening the material. This phenomenon is counterintuitive, as it is opposite to what one sees in larger metal crystals.
A new technique called cyclic healing uses repetitive stretching to eliminate pre-existing defects in metal crystals, significantly increasing their strength. The technique was developed by an international team of researchers and published in the Proceedings of the National Academy of Sciences.
Researchers discovered that valence change memory (VCM) cells use both negatively charged oxygen ions and positively charged metal ions for switching characteristics. This finding opens up new options for designing ReRAMs and could lead to improved performance, energy efficiency, and longevity.
Researchers have achieved record-high pressure to study osmium, finding that innermost electrons start interacting with each other due to extreme pressure. This phenomenon opens up new possibilities for discovering brand new states of matter.
Scientists at Purdue University have made a groundbreaking discovery by finding that metal can be deformed into folds while being cut, contrary to long-held assumptions. The team found that suppressing this folding behavior can reduce cutting force by up to 50%, leading to faster and more efficient machining with improved surface quality.
Scientists at the Max Planck Institute for Polymer Research discovered the fundamental parameters of Mott conduction, a key effect in magnetic memories and technologies. They found that traditional measurements underestimated the spin-asymmetry in electron scattering, which is responsible for magnetic sensor operation.
Researchers discovered a way to prevent dendrite formation in lithium metal batteries by adding chemicals to the electrolyte, improving safety and performance. The new approach could lead to more efficient and longer-lasting batteries with potential applications in electric vehicles and energy storage.
Defect-free palladium nanowires, a thousand times thinner than human hair, were stretched under controlled conditions to reveal the point where failures first appear. The study found that thermal uncertainty plays a significant role in the material's failure, with defects forming on the surface of the wire.