Articles tagged with Cobalt
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Researchers at the University of Groningen have developed a new metal-semiconductor interface that combines storage, memory and processing in one unit, paving the way for brain-inspired computing architectures. The device uses a spin-memristor with tunability, enabling non-volatile storage and operation at room temperature.
Researchers have developed a novel microwave synthesis process that facilitates the production of high-voltage cathodes for lithium-ion batteries. The new process produces high-quality lithium cobalt phosphate in just 30 minutes with minimal energy consumption.
Researchers warn of potential cobalt supply chain issues due to increasing lithium-ion battery demand for electric vehicles and portable electronics. They suggest strategies like enhancing recycling and developing new cathode materials to mitigate potential shortages.
A new analysis suggests that metal shortages will not significantly impact battery production, but short-term bottlenecks in lithium and cobalt supplies are possible. Researchers recommend monitoring supply chains to avoid disruptions and exploring alternative materials.
Researchers at ETH Zurich have successfully developed a novel method to rapidly and efficiently write data onto magnetic carriers using a spin-orbit-torque technique. The technique involves the application of electric current pulses through an adjacent wire, which causes magnetization inversion without the need for coils.
Researchers have discovered a crucial step in the water-splitting process, enabling the creation of clean solar fuels. The study reveals the characteristics of cobalt catalysts and their role in facilitating the formation of oxygen-oxygen bonds.
Researchers have developed a hydrometallurgical method to recycle lithium batteries, recovering cobalt and lithium with reasonable efficiency. The process involves calcination, acid treatment, and leaching, resulting in useful extraction rates for the metals.
Researchers at Helmholtz-Zentrum Dresden-Rossendorf have developed cobalt grids that can be reliably programmed at room temperature. Three distinct magnetic states, denoted as G, C, and Q, were found around each hole in the grid. This discovery could lead to more efficient computing using spin-waves instead of electric current.
Researchers used 3D imaging to study nanoscale details of nickel-cobalt particles, revealing a unique 'Swiss cheese' structure that increases surface area and reactivity. The findings could lead to more efficient and cost-effective catalysts for fuel cells.
The 14th Report on Carcinogens adds seven new substances to the list, including five viruses that have been linked to cancer in humans. Trichloroethylene, cobalt compounds, HIV-1, HTLV-1, EBV, KSHV, and MCV are among the newly listed substances, highlighting the importance of prevention strategies to reduce the world's cancer burden.
Researchers are using naturally occurring fungi to extract valuable materials from waste batteries, including cobalt and lithium. The process uses oxalic acid and citric acid generated by the fungi to leach out the metals, with results showing up to 85% lithium and 48% cobalt extraction.
Researchers created a new method to switch strontium cobalt oxide between an insulating state and a metal magnet state at room temperature, enabling double the storage capacity of conventional USB flash drives. This technology could increase mobile phone storage by storing more photos and videos.
Researchers found that metal ions released by cobalt-chromium-molybdenum alloys impair mesenchymal stromal cells' ability to differentiate into osteoblasts. This can lead to premature bone loss and revision surgery. The study's findings highlight the need for improved implant design and composition to optimize patient safety.
Researchers at Rice University have created a novel, solid-state catalyst that splits water into hydrogen and oxygen, promising lower-cost alternatives to expensive platinum catalysts. The catalyst, made from nitrogen-doped graphene and cobalt atoms, shows high efficiency and durability in generating clean energy.
A team of researchers at the University of Wisconsin-Madison has discovered a highly efficient catalyst that can produce hydrogen using common elements like phosphorus and sulfur. The new catalyst, which is nearly as efficient as platinum, could make a significant impact on the transition to a hydrogen economy.
Researchers have discovered a way to control magnetism using organic molecules, potentially leading to more efficient and cost-effective storage technologies. The study found that three molecular layers of phtalocynine can stabilize the magnetic orientation of cobalt surfaces, even in the presence of external magnetic fields or cooling.
Researchers discovered a 'devil's staircase' effect in a cobalt oxide spin-valve system, allowing for infinite superstructures with tunable magnetic configurations. This finding may lead to new options in spintronics, enabling more efficient data storage and processing.
A new study by the University of Surrey warns that excessive cobalt levels can cause severe side effects in horses, including long-term damage to vital organs. The researchers urge trainers to be aware of the dangers of cobalt misuse, as there is no evidence to suggest it enhances athletic performance.
The new cobalt-catalyzed [2π+2π] reaction overcomes limitations of other transition metal catalyzed methods, producing cyclobutane compounds with potentially beneficial properties. The research team used redox active bis(imino)pyridine ligands to pass electrons to and from the metal, leading to a detailed understanding of the mechanism.
Researchers at Rice University have discovered a cobalt-based thin film that can produce both hydrogen and oxygen from water to feed fuel cells. The film is highly porous, inexpensive, and scalable, making it a potential alternative to expensive metals like platinum in water-electrolysis devices.
A group of Russian astrophysicists have detected the formation of radioactive cobalt during a supernova explosion, confirming a corresponding theory. The discovery was made using data from the INTEGRAL gamma-ray orbital telescope and indicates that about 60% of the Sun's mass was emitted as radioactive cobalt.
Researchers used in situ TEM to study the evolution of platinum/cobalt nanoparticles during reactions in oxygen and hydrogen gases. They found that cobalt atoms migrate to form a cobalt oxide epitaxial film, which affects catalytic performance.
Scientists have developed a way to modulate the thermal conductivity of lithium cobalt oxide, a key material for rechargeable batteries. This breakthrough enables dynamic control of heat evolution and dissipation, leading to improved performance and safety.
The team developed a method to measure the energy needed to change magnetic anisotropy in a single Cobalt atom, revealing its maximum magnetic anisotropy energy and longest spin lifetime. This breakthrough presents a single-atom model system that can be used as a future qubit for quantum computing.
Researchers have identified two intermediate steps in water oxidation reactions using an Earth-abundant solid catalyst, cobalt oxide. This discovery provides a better understanding of the individual events in the four-electron cycle and enables the design of improvements to boost efficiency.
A patient's symptoms were linked to cobalt poisoning after a doctor used a TV show as a teaching tool to diagnose a rare disease. The patient had undergone a metal hip replacement, leading to severe heart failure and other symptoms that were eventually resolved with a new ceramic prosthesis.
Researchers at Argonne National Laboratory have found a more efficient way to link a synthetic cobalt-containing catalyst to an organic light-sensitive molecule, increasing hydrogen generation from sunlight and water. The discovery uses a new mechanism that allows the reaction to continue significantly longer.
Researchers from the University of Houston have discovered a catalyst that can quickly generate hydrogen from water using sunlight, producing twice as much hydrogen as oxygen. The technology has potential as a clean and renewable source of energy, but its efficiency rate is still too low to be commercially viable at present.
Researchers have discovered a new effect that enables easier production of spin-polarized currents necessary for magnetic chip switching. This breakthrough could lead to more efficient and robust magnetic Random Access Memories (MRAMs) for information processing.
Researchers at the University of Basel have successfully replaced iodine in copper-based dye-sensitized solar cells with cobalt, increasing sustainability and improving long-term stability. This breakthrough uses a systems chemistry approach to optimize molecular components, paving the way for environmentally friendly energy production.
The project aims to demonstrate the feasibility of converting switchgrass into jet fuel economically and in large quantities. The process is expected to result in a 95% reduction in greenhouse gas emissions compared to current production methods.
Researchers at the University of Cambridge have developed a new type of microchip that allows information to travel in three dimensions. The innovation uses spintronic technology and enables additional storage capacity on chips by spreading data across multiple layers.
Researchers have developed a new method to produce molecular magnets, which could lead to the creation of smaller, more efficient storage media and processors. The new system exploits the interactions between molecules and their substrate, enabling magnetic states to be selectively switched on and off using magnetic fields.
Researchers at Caltech have determined the dominant mechanism of cobalt catalysts, which involves a key reactive intermediate gaining an extra electron. This finding illuminates the road to developing better catalysts and suggests a route to creating extremely active iron catalysts.
Researchers discovered that carbon monoxide binds to metalloporphyrins in a unique saddle-shaped configuration, contrary to previous expectations. This finding has significant implications for the development of catalyzers and sensors.
Researchers at Ohio University and the University of Hamburg captured the first images of atomic spin in a study published in Nature Nanotechnology. The discovery enables manipulation of spin direction to store data in nanoscale devices, potentially leading to faster, smaller, and more efficient computers.
New studies by NIST scientists show that changing the shape of cobalt nanoparticles from spherical to cubic fundamentally changes their behavior. The research reveals distinct differences in how these particles interact under external magnetic fields and when exposed to heat.
Researchers found that the last atom in a line of single-atom contacts behaves differently than expected, altering the defining properties of ferromagnetic metals. The Kondo effect is observed in these tiny contacts, contradicting conventional wisdom about metal behavior at the nanoscale.
Researchers have created a nano-sized cobalt oxide photocatalyst that can effectively split water molecules, a critical step towards producing liquid fuels from carbon dioxide and water. The clusters are sufficiently efficient and fast, making them suitable for artificial photosynthesis.
Scientists at Rensselaer Polytechnic Institute developed a method to detect magnetic behaviors of nanomaterials using single carbon nanotubes. This breakthrough could lead to advancements in spintronics, digital storage devices, and selective drug delivery components.
Researchers have discovered wheel-shaped structures with octa- and enneacoordinate planar cobalt, iron and nickel centered in perfect octagonal and enneagonal boron rings. The stability of these structures is attributed to the contribution from two kinds of orbitals, resulting in aromaticity with six delocalized p electrons.
UC Berkeley physicists have successfully measured the spin of an individual atom on a surface, a key achievement for both quantum computing and spintronics. By employing low-temperature spin-polarized scanning tunneling spectroscopy, researchers were able to determine the spin of isolated adatoms atop cobalt nanoislands.
The study identifies dominant damping mechanisms in iron, cobalt, and nickel, pointing to improved material design techniques. This discovery enhances the prediction of magnetic materials' dynamics, crucial for high-performance electronic devices.
Researchers access interaction between single magnetic adatoms on a metal surface by comparing experimental results with detailed theoretical analysis. They observe novel magnetic state for chain of three cobalt adatoms and improve understanding of fundamental interactions between single spins.
Japanese scientists produce peanut-shaped nanoparticles comprising two different sulfur-containing substances, palladium sulfide and cobalt sulfide. The unique structure gives rise to different physical and chemical properties.
Researchers created a compound that can switch between magnetic states upon light exposure, enabling binary information storage on an atomic scale. This breakthrough could lead to the development of ultra-small data storage devices for future computers.
Physicists at the Max Planck Institute have discovered a way to arrange randomly deposited atoms in regular patterns, mimicking the behavior of sheep in a pen. By adjusting substrate temperature and parameters, they created circular fencing that guides adatoms into ordered structures.
Researchers at Rice University have decoded the three-dimensional structure of a tornado-like magnetic vortex no larger than a red blood cell. The discovery could lead to breakthroughs in ultra-high-density hard drive storage and non-volatile memory.
Scientists at NIST have developed a technique to move a single atom between two positions on a crystal surface using an electron beam. The method improved our understanding of the science behind atomic switching and allows for spatial mapping of the probability of an electron exciting the desired atom motion.
Researchers at the University of Washington have developed a material that can operate at room temperature, allowing for the manipulation of electrons' magnetism. This breakthrough has the potential to create broad new capabilities for computers and digital devices, including reduced power consumption.
The MIT team used an intricate assembly process to create a functional electronic device from viruses, producing dense films of cobalt oxide and gold. The result is a nanoscale battery material with high energy density, suitable for compact energy storage applications.
Duke University researchers have developed a technique using ferrofluids and magnetic traps to create 'nanocavities' that can be used as chemical detectors or for data storage. The team uses magnetics to manipulate microstructures, allowing for complex patterns to be assembled.
Researchers found elevated tungsten and cobalt levels in Fallon's air, differing from nearby towns. The findings suggest a possible environmental cause for childhood leukemia cases in the area, prompting further research to examine the relationship between these metals and cancer development.
Researchers at NIST have successfully assembled and disassembled long chains of magnetic nanoparticles, offering potential applications in medical imaging and information storage. The chains are formed using a weak magnetic field, which induces alignment of the nanoparticles and allows for controlled manipulation.
Researchers develop kinetic antiferromagnetism, solving decades-long problem in theoretical physics. The discovery has practical applications in superconductors, magnetic storage devices, and other areas of materials science.
Researchers use custom-built microscope to manipulate cobalt atoms on a copper lattice, observing and controlling atomic motion. The 'hip hop' sound effect is generated by converting electronic signals into audio, allowing real-time monitoring of atom position.
A new synthesis method for sodium cobalt oxyhydrate, a type of superconductor containing water, has been developed by Brookhaven chemist Sangmoon Park. This method produces large quantities of the material without requiring hazardous substances, making it easier to further analyze its properties.
Researchers at Purdue University have created tiny magnetic rings that can store information at room temperature and are self-assembled, promising a new approach to non-volatile computer memory. The nanorings' magnetic states can be switched by applying a magnetic field, paving the way for faster and more affordable computer memories.
For the first time, researchers have used a transmission electron microscope to image lithium atoms, capturing an arrangement of lithium ions among cobalt and oxygen atoms in the compound lithium cobalt oxide. The One Angstrom Microscope achieved a resolution as high as 0.78 angstrom.
A team of researchers from UC Davis has developed a simple model to predict the solubility of environmental contaminants in groundwater. The model uses hydrotalcites, layered compounds that can take up metals and other chemicals, to make predictions about contamination with chromium, carbon, iodine, and technetium isotopes.