Articles tagged with Silver
A new composite material with enhanced antifungal activity was created by irradiating metallic tungstate with electrons and femtosecond laser pulses. The modified compound displayed antifungal activity 32 times greater than original silver tungstate, while also showing promise in treating bladder cancer cells.
Researchers have successfully grown elongated hexagon-shaped flakes of borophene on a silver substrate, overcoming a major hurdle in its production. The discovery could enable the creation of atom-width conductive wires for nanoelectronics devices.
Researchers at the University of Warwick have discovered a way to make patterned films of silver and copper without using toxic chemicals or expensive methods. The new method uses an extremely thin printed layer of organofluorine to prevent metal deposition, making it more sustainable and potentially cheaper.
The research team derived precise values of enthalpy and entropy of numerous silver compounds, enabling predictions of chemical processes in the gas phase. The findings will help manage thin film and pure sample deposition from the gas phase.
A world-first study has discovered a new technique to create stronger, lightweight magnesium alloys using atomic-resolution X-ray mapping. The finding significantly improves the structural integrity of automotive and aerospace industries by increasing the boundary pinning effect and strengthening the alloy.
A University of Pittsburgh analysis confirms that cutting ACA cost-sharing reduction payments improved health insurance affordability for Marketplace enrollees. Silver loading and switching strategies maximize premium affordability for both on- and off-Marketplace customers.
Researchers study thiolate-protected gold-silver alloys, revealing intra-cluster and inter-cluster metal exchange that affects cluster stability and geometric structure. This understanding is crucial for harnessing novel physical and chemical properties of these clusters.
Researchers have found traces of Roman-era pollution in the ice of Mont Blanc, revealing significant atmospheric pollution from heavy metals. The study provides a record of atmospheric conditions in ancient Rome and sheds light on the impact of ancient emissions on the present-day environment in Europe.
A study by University of Kent researchers found a direct correlation between increasing solar panel demand and rising silver prices, with the latter accounting for 6.1% of solar panel cost.
A new study from Case Western Reserve University finds that low- to middle-income individuals with subsidized health-exchange insurance are more likely to experience problems with access and affordability. They are 2.5 times more likely to have difficulty paying medical bills and skip needed care, compared to Medicaid recipients.
Phoenicians sourced silver from Anatolia, Sardinia, and Iberian Peninsula regions between the 10th-9th centuries BCE. The silver production process and its lead impurities provided insight into their expansion into Europe and Asia.
Scientists at Brookhaven National Laboratory engineered hollow metallic nanoscale boxes, or 'nanowrappers,' to carry and release DNA-coated nanoparticles in a controlled way. The researchers demonstrated the ability to load and unload materials using these nanostructures for various applications.
Researchers from NUST MISIS developed a new hybrid catalyst for carbon monoxide oxidation using hexagonal boron nitride and silver nanoparticles, achieving full conversion at 194 degrees Celsius. Increasing silver concentration may reduce the temperature further.
Researchers have developed a novel catalyst that enables an aluminum-air flow battery to outperform lithium-ion batteries in terms of energy density, cost, and cycle life. The breakthrough technology uses a silver manganate nanoplate architecture to alleviate side reactions and improve the battery's longevity.
Researchers have created designer materials that can be used in various photonic applications, outperforming individual metals like gold and silver. The materials exhibit tuned optical properties, enabling lighter load and enhanced power for Soldier devices.
Research found that silver nanoparticles and soluble silver cause inflammation in zebrafish gills, with nanoparticles leading to longer-term effects. After exposure, fish recovered from the metal, but continued to exhibit altered gene expression levels.
Osaka University-led researchers developed non-toxic nanoparticles that emit vivid, clean colors with high energy efficiency. The new particles use a chaotic material shell to achieve pure colors without rigid structures.
Researchers developed a wearable and implantable device that measures electrophysiological signals and applies electrical and thermal stimulations. It was successfully used on a human wrist to monitor the electrical activity of heart and muscles.
Researchers at Ruhr-University Bochum have created a new technique to study the chemical reactions of individual silver nanoparticles in real-time. They found that under certain conditions, these particles transform into poorly soluble silver chloride, which can be toxic for many organisms.
Researchers at UC San Diego have created a nanosized device that can generate light through inelastic electron tunneling, increasing efficiency to approximately two percent. The device uses a metal-insulator-metal junction to convert electronic energy into photons, with potential for further optimization.
Silver nanoparticles have been found to be highly toxic to Danio fish embryos, with flat particles being more toxic than spherical ones. The research suggests that the toxicity of nanosilver is due to the presence of nanoparticles themselves, not just silver ions.
Researchers demonstrate large-scale fabrication of transparent conductive electrode film based on nanopatterned silver, offering high-performance and long-lasting option for use with flexible screens. The silver-based films could also enable flexible solar cells and improve existing flexible displays.
Research at Oregon State University found that silver nanoparticles can inhibit beneficial bacteria in wastewater treatment plants, leading to excessive nutrient levels and eutrophication. The study suggests that short-term exposure studies may underestimate the potential toxicity of long-term, low-concentration exposure situations.
A new chemical sensing chip can detect cocaine, opioids and marijuana in biological samples quickly and accurately. The low-cost chip uses surface-enhanced Raman spectroscopy to identify chemicals based on their unique light-scattering signatures.
Scientists have developed an affordable specialized polymer coating that can be recharged with bleach treatments to continuously kill bacteria on coated stainless steel surfaces. The coating uses N-halamine polymers and has been shown to be effective against various types of bacteria, including E. coli and Staphylococcus aureus.
Detergent chemistry significantly impacts the removal of silver nanoparticles from laundry wastewater, with ion-exchange technology recovering up to 99% of the metal. The study's findings could help improve wastewater treatment and reduce aquatic harm.
The Graduate School of Creative Design Engineering at UNIST has won prestigious Spark Design Awards for their 'Hyperloop System Innovation' concept, which envisions a futuristic UFO-shaped Hyperloop Station. The award-winning design focuses on user-centered design and a Dual Rotating System to manage passenger traffic, offering a novel...
Researchers developed a single-step, laser-based method to produce hybrid microstructures of silver and silicone. These structures exhibit both electrical conductivity and flexibility, making them suitable for sensing mechanical forces and enabling new types of optical and electrical devices.
Researchers from Kumamoto University developed a method to activate silver nanoparticle antibacterial properties at will. Pulsed laser irradiation transformed the shape of gold-coated silver nanoparticles, increasing their antibacterial activity against E. coli.
Researchers at the University of Sussex have created a new method for making smart phone touch screens that are cheaper, less brittle, and more environmentally friendly. The breakthrough involves combining silver nanowires with graphene to create a hybrid material that matches existing technologies at a fraction of the cost.
Researchers discovered medieval artisans used an ancient method to coat silver threads with gold, revealing a technique that endured for centuries. The study employed lab techniques to characterize the chemistry of the threads and strips, showing the gold coating was applied using heat and hammering.
Researchers developed a silver micron-particle sintering joining technology that can bond various electrodes, including Cu and Au, at low temperatures. This technology achieves high reliability and low electrical resistivity, contributing to energy saving and reduction of CO2 gas.
Analysis of ancient Roman coins found that the defeat of Hannibal during the Second Punic War led to a significant increase in Spanish silver mining revenue, contributing to Rome's expansion. This finding provides tangible evidence of Rome's transition from regional power to empire.
A team from HZB and EMPA successfully realized direct electron beam writing of silver nanocrystals using Electron-Beam-Induced Deposition. This breakthrough enables the creation of complex features onto a substrate in a single step, promising applications in nano-optics and information technology.
A study by the University of East Anglia warns that common water treatments containing colloidal silver may cause genotoxicity, damaging DNA. This can lead to reproductive issues and harm to future generations. The World Health Organization advises against its use as a primary water treatment.
Scientists at Ludwig-Maximilians-Universität München demonstrate that tiny spots of silver can significantly reduce energy consumption in light-based computation. By exploiting the properties of plasmon oscillations, they achieve a balance between nanometer-scale dimensions and low energy loss.
Researchers are using gene-editing platform Crispr-Cas9 to investigate the poisoning power of ancient silver remedy. They aim to create effective antimicrobials and avoid antimicrobial resistance pitfalls.
Researchers have developed a simple way to integrate metal nanoparticles in nail polish, resulting in durable, transparent polishes with metallic sheen. The technique could also be used to create coatings for medical devices.
Researchers at the University of Michigan have developed a transparent silver film that can survive air exposure and maintain its conductive properties. The film has potential applications in touchscreens, flexible displays, and metamaterials for faster computing and data transfer.
Rice University scientists fire micro-cubes at a target to rearrange their nanoscale structures, creating ultrastrong and tough materials. The technique, known as LIPIT, uses advanced laser-induced projectile impact testing to generate high pressure that far exceeds the material's strength.
Researchers from Lomonosov Moscow State University have developed a new, eco-friendly method for obtaining silicon nanowires, replacing hydrofluoric acid with ammonium fluoride. The produced nanowires show promising applications in micro- and optoelectronics, photonics, PV, sensorics, and biomedicine.
Rice University researchers have discovered a way to subtly change the interior structure of semi-hollow nanorods, altering their interaction with light. This method could form the basis of a nanoscale switch with enormous potential.
Researchers at Rice University have found a new, wavy two-dimensional material called borophene that could be ideal for creating flexible electronic devices. The material has excellent conductivity and can stretch without losing its electronic properties.
The study found that silver nanoparticles' protein corona reduces their toxicity by forming silver sulfide nanocrystals, which are non-toxic. In the absence of a soft corona, Ag2S crystals form, precipitating toxic silver ions.
A new system uses solar energy to split water molecules and hydrogen-eating bacteria, producing liquid fuels with improved efficiency. The 'bionic leaf' technology has the potential to be incredibly versatile, making any downstream carbon-based molecule.
A team at Harvard's Wyss Institute developed a novel method to print metallic architectures without supports, allowing for customized electronic and biomedical devices. The technique uses laser annealing of conductive metallic inks, resulting in complex wire patterns and sharp angular turns.
Researchers have discovered that silver nanowires are an ideal material for current and future flexible touch-screen technologies. The study found that silver nanowire films can match and exceed the transmittances and conductivities of ITO, a brittle and expensive material used in traditional touchscreen devices.
Researchers at the University of Pennsylvania have created the first transistors made entirely of nanocrystal 'inks', opening up new possibilities for flexible and wearable electronics. The new process, which uses lower-temperature equipment, can be applied to larger areas and is compatible with a wide range of materials.
Researchers at NREL and SLAC pinpoint the chemical and physical changes that occur during the firing step in silicon solar cell manufacturing. They found that between 500-650 degrees Celsius, lead oxide etches the antireflective coating on the solar cell, while above 650 degrees, silver dissolves into the molten glass frit.
Researchers at ETH Zurich developed a working group that created a tiny, ultra-efficient optical switch using silver atoms. This breakthrough has significant implications for data transmission and storage, as it enables the creation of digital signals with unprecedented accuracy.
Researchers used density functional theory to understand the self-assembly of porphine molecules on copper and silver surfaces. They found that weak van der Waals interactions were the largest contributor to molecule-surface interaction, and surface-mediated molecule-molecule interactions occurred at higher coverages.
Researchers at Rice University develop a new method for building 'drawbridges' between metal nanoparticles, allowing for the creation of full-color displays. The technique involves anchoring pairs of gold nanoparticles to a glass surface and applying a small voltage to create a conductive silver bridge that can be switched on and off.
A University of Cincinnati-led team uncovered a rare, intact Bronze Age warrior's tomb dating back to around 1500 B.C., filled with gold cups, jewelry, and bronze weaponry. The find is significant as it may have belonged to a powerful figure who helped shape the Mycenaean culture.
A new method using nanotechnology-based paper pages can eliminate water-borne bacteria, making drinking water safe for millions. The Drinkable Book, developed by Dr. Theresa Dankovich, uses metal nanoparticles to purify up to 26 gallons of water per page.
Researchers have developed a new, cost-effective alternative to conventional electrodes using encapsulated silver nanowires. The electrodes are made by applying a suspension of silver nanowires onto a substrate and then encasing them in AZO crystals.
New research explores Viking Age causes by focusing on spoils beyond portable wealth, highlighting exotic lure and tangible symbols of power. Individuals could build reputations through raiding, gaining social capital and intangible benefits.
Researchers at Oregon State University have developed a new method to fabricate silver nanoparticles for printed electronics at room temperature. This breakthrough has the potential to open up new applications in fields such as solar cells, printed circuit boards, and low-emissivity coatings.
The study demonstrates the use of DNA nanotechnology to position arrays of hundreds of identical silver clusters with tunable fluorescent properties. This approach enables controlled assembly of photonic arrays, opening up new possibilities for sensing and imaging applications.
A recent study by Graduate Student Aubrey Hillman found that ancient copper and silver production in southwest China produced tremendous quantities of harmful heavy metals, including lead, silver, zinc, and cadmium. The pollution levels were three to four times higher than those generated by modern metallurgical methods.
Researchers at Northwestern University developed a technique to transform silver into any color of the rainbow using a 'sandwich-like' structure. By adjusting the glass thickness, different colors can be produced. The filter also acts as an absorber for specific wavelengths, making it suitable for optoelectric devices.