Articles tagged with Copper
Scientists have long suspected sulphur in the Earth's core but now have conclusive geochemical evidence confirming its presence and estimating its vast quantity. The discovery lends weight to the theory that the Moon was formed by a planet-sized body colliding with the Earth.
A team of scientists from OIST and international partners has created a sensor that can detect carbon monoxide, a common industrial pollutant, using copper oxide nanowires decorated with palladium nanoparticles. The sensor demonstrates significant improvements in detecting gas emissions compared to existing methods.
Researchers found that climate-driven erosion influences the age and abundance of exposed copper porphyry deposits globally. The study used data on the age and number of exposed deposits to compare with climate patterns, revealing a strong connection between erosion rates and deposit distribution.
Researchers at CIFAR discover that charge ordering creates a stripy pattern, not a checkerboard, and competes with superconductivity along one direction. This discovery sheds light on the role of charge ordering in propelling electrons into tight pairs, allowing for free movement.
Researchers at Caltech have developed a method to produce high-mobility graphene in a single step at lower temperatures, resulting in fewer defects and improved electrical properties. The new technique has the potential to pave the way for commercially feasible graphene-based solar cells and electronics.
The study found that geometric relationships between graphene and the substrate determine island shapes, with triangular surfaces leading to more irregular structures. Understanding this process can help design grain boundaries with specific properties, useful for electronics applications.
UC Riverside researchers develop unique model system to study environmental effects of copper nanoparticles. The studies show that properly functioning septic tanks can eliminate toxicity of nanoparticles, providing encouraging results for human health and ecosystem implications.
A team of scientists from the University of Bristol has discovered a two-step process for porphyry copper formation, which could revolutionize the search for new copper deposits. The study reveals that salt-rich fluids and sulphur-rich gases interact to form copper ore, providing insights into the formation of global copper reserves.
University of Groningen scientists have successfully grown graphene on copper oxide, preserving its electronic properties. This achievement could pave the way for large-scale production of graphene devices using lithographic techniques.
A new metal-free atom transfer radical polymerization process using an organic-based photocatalyst and light has been developed by researchers at UC Santa Barbara. This process overcomes the use of heavy metal catalysts like copper, which is a major roadblock in applications such as biomedical purposes.
Researchers have observed the universal pattern of charge order in cuprate superconductors, revealing a complex relationship between charge carriers and the formation of superconducting states. The discovery provides important insights into the phenomenon of high-Tc superconductivity.
Researchers at Berkeley Lab found that proper copper levels modulate spontaneous neural activity in developing circuits, which is critical for brain health and development. The study highlights the importance of managing copper levels to prevent misregulation of signaling in cell-to-cell communications.
Researchers at Vanderbilt University have discovered a new form of crystalline order that exhibits both crystal and polycrystalline properties. The 'interlaced crystals' arrangement has ideal properties for thermoelectric applications, which could increase power generation efficiency and reduce energy costs.
Scientists have found that self-doping in the copper-based material YBCO enables it to conduct electricity without loss at room temperature. This groundbreaking discovery challenges traditional understanding of high-temperature superconductivity and could pave the way for more efficient electrical applications.
Prostate cancer cells hoard copper, and researchers have found a way to deliver a trove of copper along with a drug that selectively destroys the diseased cells. This combination approach could lead to improved treatments for late-stage disease.
Researchers at Penn State have developed a metamaterial coating that allows coated objects to function normally while appearing as something other than what they really are. The 'illusion coatings' work by using copper patterns designed to create the desired result, enabling practical applications for cloaking metal antennas and sensors.
Researchers created a 'smart' separator with a nanolayer of copper that detects shorting and provides early warning before overheating and bursting into flames. The technology aims to reduce battery fires, which have caused concerns in the aviation and electronics industries.
A new study suggests that ALS progression is linked to increased protein instability, particularly in mutant superoxide dismutase (SOD) proteins. The researchers found that SOD clusters or aggregates are common in affected motor neurons and support cells, suggesting a potential target for therapy.
The Stanford team developed a wireless pressure sensor that can detect subtle changes in pressure using radio waves. The technology has potential applications in monitoring brain pressure in lab mice and could lead to the creation of 'skin' for prosthetic devices.
Researchers at Monash University have developed copper nanowire aerogels that combine conductivity with flexibility, enabling the creation of stretchable conductive rubbers. The addition of a small amount of poly(vinyl alcohol) improves mechanical strength without impairing conductivity.
Researchers found evidence that copper smelters enjoyed a rich diet and had access to high-quality meat, suggesting they held a respected position in ancient society. The discovery challenges the long-held narrative of metal workers as slaves or prisoners.
Researchers at the University of Alberta have developed a non-metallic metamaterial that enables the compression and containment of light in smaller cables. This breakthrough could lead to radical increases in computing speeds and reduced energy use by electronic devices.
Researchers found that plastic handle needles are less prone to buckling than copper coil handle needles, reducing the need for stainless steel wires. Replacing copper coil handles with plastic ones could save up to 100 tonnes of copper wires and 20 million meters of medical grade stainless steel every year.
Researchers have discovered that copper foams can convert carbon dioxide into formic acid and propylene, two valuable industrial chemicals. The discovery provides a new route for sustainable chemical production, reducing reliance on fossil fuels.
NIST lab tests reveal severe corrosion on steel alloy samples exposed to ethanol and acetic acid vapors, suggesting need for underground gas tank retrofits. The study's findings indicate that submersible pump casings made of steel or cast iron may need to be replaced sooner than expected.
A team of scientists at Duke University has discovered a molecule that exploits the body's natural response to fungi and bacteria, using copper to kill microbial pathogens. The findings show promise for developing broad-spectrum antimicrobial agents with minimal harm to healthy cells.
Scientists at Brookhaven National Laboratory have discovered a new catalytic system for converting carbon dioxide to methanol. The catalyst, composed of copper and ceria nanoparticles, reveals highly reactive sites forming at their interface, enabling the conversion of normally unreactive CO2.
Skyrmions, subatomic quasiparticles that could play a key role in future spintronic technologies, have been observed for the first time using x-rays. Researchers found two distinct skyrmion sub-lattices that rotate with respect to each other, creating a moiré-like pattern.
Researchers at the University of Leicester discovered that human sweat can corrode brass objects' antimicrobial properties within an hour of contact. This corrosion reduces their effectiveness in killing bacteria and other microorganisms.
Researchers at Oregon State University have discovered a copper compound that significantly extends the lifespan and improves locomotor function of transgenic mice with ALS. By delivering copper selectively to spinal cord cells, scientists aim to stabilize superoxide dismutase and improve mitochondrial function.
Researchers at the University of Central Florida have developed a way to both transmit and store electricity in a single copper wire, using nanotechnology. This breakthrough could enable the use of energy-storing cables in applications such as electric vehicles, space-launch vehicles, and portable electronic devices.
Researchers have developed a low-cost material coating technique that mimics the Lotus effect, providing superhydrophobic properties. The technology can minimize fouling in heat exchangers and improve corrosion resistance.
Researchers at Duke University Medical Center found that cancers with a BRAF gene mutation require copper for tumor growth, leading to potential new treatments using copper-reducing drugs. The study provides hope for patients with melanoma and other BRAF-driven cancers.
Researchers have found a novel electrode made of oxide-derived copper that can efficiently convert carbon monoxide into liquid ethanol. The discovery could provide an eco-friendly alternative to conventional ethanol production, which relies on land- and water-intensive crops like corn.
A UIC chemistry professor has been awarded a prestigious international sustainability grant to lead the US effort in developing novel catalytic methods. The project aims to replace rare metals with inexpensive and abundant metals, reducing environmental pollution and resource depletion.
Scientists used PET imaging to visualize copper distribution in the body of mice with Menkes disease, laying groundwork for human studies. The study found that combining copper injections with disulfiram enhances copper accumulation in the brain without kidney damage.
Researchers exposed biochemical structure of fossil leaves to visualize the chemistry of exceptionally preserved fossil leaves. The study reveals that the distribution of copper, zinc, and nickel in fossil leaves is almost identical to modern leaves.
UC Riverside and University of Manchester researchers discover that adding a layer of graphene to each side of a copper film increases heat conducting properties by up to 24 percent. This enhancement could further help in the downscaling of electronics.
A yeast model of Alzheimer's disease has identified a drug candidate, clioquinol, that reduces amyloid-β levels by 90% and restores cellular protein-trafficking. The mechanism of action involves chelating copper, which makes Aβ more toxic.
Carbon nanotube-based fibers have been shown to carry electrical current up to four times that of copper wires of the same mass. The fibers' ability to transmit current makes them ideal for lightweight power transmission in aerospace applications, where weight is a significant factor.
The study found that domesticated camels arrived in the southern Levant, including Israel, around the 9th century BCE. This challenges the biblical account and highlights a significant turning point in Israel's engagement with the world.
A team of researchers successfully controlled the positions of two protons in a porphycene molecule by approaching a single copper atom. This breakthrough demonstrates a new way to manipulate matter at the atomic level, paving the way for the development of nanomachines and other cutting-edge technologies.
Researchers have developed a novel metal ink made of copper nanosheets that can be used to write functioning, flexible electric circuits on regular printer paper. The ink showed excellent conductivity even after being folded or crumpled 1,000 times.
A massive landslide in a Utah copper mine generated seismic waves that were recorded by instruments over 400 km away, producing earthquake-like signals. The study found that the landslide triggered seismic activity, including small earthquakes with characteristics similar to tectonic earthquakes, in the days following the event.
A study published in Nature Structural and Molecular Biology reveals that the protein responsible for copper excretion uses a unique transport mechanism to remove toxic copper from cells. This knowledge has important implications for understanding copper-related diseases, as well as developing new antibiotics targeting harmful bacteria.
Researchers found that high-temperature superconductivity in copper oxides forms as material cools from a state where electrons exhibit charge ordering, a phenomenon previously unknown. The study provides a crucial clue to understanding how to enhance superconductivity and potentially increase temperatures.
Researchers have developed a new recipe for growing graphene, using a thin film of copper with massive crystalline grains. The large grains enable the material to survive high temperatures needed for graphene growth.
Researchers at Duke University have developed copper nanowire catalysts that can efficiently harness solar energy to split water into hydrogen, a promising step towards cheaper and sturdier fuel cells. The material is abundant, inexpensive, and flexible, making it ideal for use in various applications beyond solar energy production.
New UEA research suggests that adding copper to crop fertilization processes can help reduce nitrous oxide emissions, a potent greenhouse gas. Copper has been found to regulate the gene responsible for destroying nitrous oxide in soil bacteria.
EPFL researchers found that copper is essential for malignant cell energy production and that reducing its intake can slow down tumor growth. Copper deficiency resulted in lower respiration enzyme activity and increased glycolysis in tumors.
A new solar cell design featuring copper electrodes has surpassed traditional heterojunction cells in efficiency without special equipment or expensive materials. The innovative approach could disrupt the solar industry by reducing costs and increasing production capabilities.
Researchers are developing a new type of battery that uses copper foam to increase power density and reduce volume. The new battery aims to store the same amount of energy in two-thirds the volume, charge five to ten times faster, and last up to ten times longer than conventional batteries.
Researchers used an X-ray laser to create movies of copper atoms' arrangement changes after extreme shock, pinpointing the breaking point of permanent deformation. This experiment enables direct comparison with complex computer simulations and helps predict material strength in extreme conditions.
Researchers have developed a new production method for graphene that uses aromatic molecules, enabling the creation of flexible graphene structures with specific functionality. The method allows for the manufacture of quantum dots, nanoribbons, and other nano-geometries with unique properties.
A recent study by the University of York found that copper bracelets and magnetic wrist straps offer no meaningful benefits for patients with active rheumatoid arthritis symptoms. Participants who wore these devices reported no significant improvements in pain, swelling, or disease progression compared to a placebo.
A new study published in PLOS ONE reveals that copper and copper alloys rapidly destroy norovirus, a highly-infectious sickness bug responsible for over 267 million cases worldwide. Copper surfaces can effectively shut down one avenue of infection, reducing the risk of outbreaks.
A study found that copper accelerates the pathology of Alzheimer's disease by disrupting the removal of amyloid beta from the brain and stimulating its production. Copper accumulation can lead to inflammation and breakdown of the blood-brain barrier, promoting toxic protein buildup.
Researchers have developed a technique to pattern and actuate hydrogel materials, enabling the creation of soft robotic devices with potential biomedical applications. The devices can manipulate objects using electrically assisted ionoprinting, opening new possibilities for drug delivery and tissue scaffolding.
A study found that copper pollution prevents fish from detecting danger signals emitted by other fish, making them more susceptible to predation. Researchers also discovered that nickel has a lesser effect on the fish's olfactory system.
Researchers from Monash University have compiled and analyzed worldwide copper resources, finding existing supplies can meet growing demand for a long time. The extensive database provides detailed information on ore grades, allowing for more informed geological exploration and improved industry practices.