Articles tagged with Silver
Researchers develop a novel DNA origami-based method to synthesize stable, monolithic amorphous silver nanostructures. The technique introduces geometric frustration that suppresses crystallization in metallic silver, resulting in high-stability and disordered atomic arrangements.
Researchers use empress cicada wings as a ready-made nanostructure template to enhance surface-enhanced Raman spectroscopy (SERS) performance. The cylindrical nanostructures separated by five-nanometer gaps amplify Raman scattering signals by a factor of a million compared to non-coated cicada wings.
Researchers have developed Laser Ablation Dry Aerosol Printing (LADAP) that generates nanoparticles from solid targets using pulsed laser ablation, enabling the printing of metals and oxides without inks. The technique produces structures with fine-resolution microstructures and thick deposition within a high-throughput process.
Researchers at Tohoku University unveiled a 77-fold increase in photoluminescence quantum yield by adding a single silver atom to high-nuclear Ag nanoclusters. This discovery paves the way for practical applications in optoelectronics and sensing technologies.
Researchers from UK and Canada will study ways to reduce mining's environmental footprint and enhance efficiency across critical mineral value chains. The project aims to develop new geological models and exploration tools for rare earth element deposits, aiming to diversify the supply chain and ensure high environmental standards.
A Roman treasure hoard found in Thetford Forest indicates the town was a pagan cult centre until the 5th century. The hoard's diverse origins from across the Roman empire support this new chronology.
Scientists at Tohoku University have successfully improved the phosphorescence efficiency of silver clusters by incorporating a heavy atom effect, which enhances intersystem crossing and leads to increased phosphorescence. This discovery provides a new design strategy for next-generation luminescent materials and triplet sensitizers.
Researchers developed two silver-based bimetallic clusters that increase Faradaic efficiency and yield of urea through charge polarization modulation. Ag14Pd outperforms Ag13Au5 in NO3RR, while Ag13Au5 excels in CO2RR with higher urea formation rates.
Scientists have successfully created silver nanoparticles using store-bought goji berries, a process that eliminates the need for additional chemicals and is biologically compatible with humans. The nanoparticles were tested for their antimicrobial activity against Staphylococcus aureus and confirmed to be effective.
Researchers found that silver did not reduce overall bacteria in water samples from silver-containing showerheads, but its composition varied with each type of fixture tested. The study suggests that rare microbes in these showerheads could be more prone to forming biofilms in response to the stressful environment.
Scientists have discovered that adding carbon to metal nanoparticles makes them 200 times more active, which could lead to significant cost savings and improved efficiency in industrial processes. The discovery was made possible by precise measurements and simulations of the interaction between metal nanoparticles and a carbon substrate.
Researchers at Pohang University of Science & Technology (POSTECH) developed a smart insect screen-inspired film that regulates solar heat and lowers interior temperatures. The breakthrough, published in Advanced Functional Materials, achieves both transparency and radiative cooling performance.
Scientists create diacetylene derivative-based luster materials with tunable colors and metallic lusters, opening new possibilities for applications in jewelry, printing inks, and cosmetics. The developed material can express a golden luster selectively using light irradiation, minimizing environmental footprint and weight.
Researchers at Linköping University have created soft electrodes made of gold nanowires and silicone rubber, capable of stimulating nerve signals and capturing electrical signals. The material is expected to last for at least three years and has potential applications in medical devices.
Scientists develop locally periodic honeycomb structure with ordered but non-periodic arrangements, exhibiting properties distinct from usual periodic crystals. The study highlights the effectiveness of aperiodic approximants in inducing modulations within self-assembled soft-matter systems.
A team of researchers analyzed 49 silver coins from the Fitzwilliam Museum and found a chemical and isotopic signature matching third- to seventh-century silver from the Byzantine Empire. The study reveals a surge in trade involving these silver coins between 660 and 750 AD, which had a significant impact on people's lives. Later analy...
A team of UCF researchers has received a $1.5 million grant from the US Department of Energy to develop a novel metallization process for solar cells. The goal is to increase efficiency and lower production costs, making solar energy more accessible.
A study by Florida Atlantic University found that nearly all wristbands (95%) are contaminated with harmful bacteria, including E. coli and staphylococcus. The study suggests using metal types like gold and silver, which had little to no bacteria, and recommends regular sanitizing of wristbands, especially after gym activities.
Scientists develop two novel SCAMs with enhanced stability and excellent Fe3+ sensing ability. The materials exhibit a quantum yield of up to 9.7% and exceptional stability in water, making them suitable for environmental monitoring.
Researchers have developed a new approach to constructing thermoelectric modules using silver nanoparticles, enabling efficient energy conversion and operation across various temperatures. The discovery is expected to accelerate the development of advanced modules for power generation and other applications.
Researchers at Chalmers University of Technology developed a new recycling method for solar cells that uses acidic solutions to separate precious metals. The process recovers up to 100% of the silver and 85% of the indium, making it more environmentally friendly and cost-effective than traditional methods.
Researchers from Japan have synthesized two di-superatomic molecules composed of Ag and evaluated the factors involved in their formation. The study found that a twist between the two icosahedral structures stabilizes the nanocluster by shortening the distance between them. Additionally, the presence of Pd and Pt central atoms was foun...
Researchers at the University of Florida have found that silver nanoparticles and aminoglycosides work together synergistically to combat antibiotic-resistant bacteria. The combination reduces the amount of antibiotic needed by 22-fold, making it more potent and potentially reducing side effects.
Researchers have created a sorbent that maximizes the absorption of precious metal from solutions, selectively extracting silver even in low concentrations. The new sorbent's properties make it useful for purifying drinking water and processing production waste.
Researchers at Karolinska Institutet have developed nano-sensors that can detect pesticide residues on fruit surfaces in just five minutes. The sensors use flame-sprayed nanoparticles made from silver to increase the signal of chemicals, overcoming high production costs and limited batch-to-batch reproducibility.
A new electrode design boosts carbon dioxide electroreduction, converting CO2 to CO with 54% efficiency and stable large current densities. The results demonstrate a promising approach for scalable CO2 abatement and renewable energy consumption.
Researchers found that copper-coated surfaces significantly reduced viral load after one hour, while silver-coated surfaces had no effect on infectivity. The team investigated the antiviral properties of various metal-based sacrificial anodes and discovered a clear antiviral effect of copper against Sars-Cov-2.
Researchers have developed a new silver-ion releasing coating that effectively prevents bacteria from adhering to implants and killing them. The coating, dubbed "SAFE", was tested on rats and showed promising results, with no signs of toxicity or wear and tear.
Researchers at the University of Tokyo have developed a cost-effective and convenient method to apply an antimicrobial silver coating to textiles using polyphenols found in wine and chocolate. The coating maintains its properties even after multiple washes and has potential applications in hospitals and other sterile environments.
A study published in Applied Economics analyzed the relationship between precious metal commodities and equity markets, revealing that gold and aluminum are the most desirable metals for investment. The research also found that copper and zinc have the largest spillovers on global equity indices.
Researchers develop small-molecule serial femtosecond crystallography, enabling precise analysis of complex materials. The technique reveals accurate atomic structures of previously unsolvable compounds.
Researchers have found compounds based on gold, silver, and copper that can store hydrogen in a stable manner. These 'metal hydride' complexes could be used to store hydrogen for use in vehicles, potentially revolutionizing the production of clean energy.
NTU scientists create soft and stretchable battery powered by human perspiration, suitable for wearable devices. The battery generates electricity in the presence of sweat, providing a sustainable alternative to conventional batteries.
Scientists investigate how bacteria develop resistance to silver nanoparticles, identifying a key genetic mutation and differences in motility. The findings suggest that silver nanoparticles may be effective against certain strains of bacteria, but caution is needed to prevent resistance.
Researchers found geochemical evidence of pre-coinage silver trade in the Late Bronze and Iron Age periods, with Hacksilber playing a crucial role. The study analyzed Hacksilber from 13 sites dating back to 1300 BCE, revealing its origin from the Southern Aegean and Balkans.
Two types of coating made from new coordination polymers with silver effectively kill bacteria, including those that form biofilms. The most promising coating destroys 99.99% of bacteria, offering a breakthrough in antibiofilm applications.
Researchers from the University of Pittsburgh have developed a new particle-free silver microgrid conductor that surpasses traditional indium tin oxide (ITO) in flexible high-performance transparent electrodes. The microgrids demonstrate better transparency, lower roughness, and mechanical durability.
Researchers found silver nanoparticles' shape transformed from triangles to circles after interacting with E. coli cells, affecting their optical properties. The study suggests silver is 'consumed' by the bacteria without impacting its antibacterial properties.
Researchers at Rice University reveal a two-step process by which silver ions are released from nanoparticles, with the possibility of stabilizing the alloy through gold manipulation. The discovery could lead to the development of new catalysts and materials for various applications.
Researchers from Universitat Autonoma de Barcelona found evidence suggesting that elite women played a crucial role in the governance of El Argar, a Bronze Age society. The study of a princely tomb discovered in La Almoloya revealed valuable items and diadems made with silver, indicating the women's symbolic power.
Researchers develop hierarchical structure for lightweight materials by self-organization, creating a new type of exceptionally strong yet light material. The material's open network structure results in an impressive density reduction and mechanical properties superior to state-of-the-art materials.
KAUST researchers have developed a method to produce carbon monoxide from carbon dioxide using a porous crystal and silver catalyst. The new approach improved the selectivity of CO production by controlling the binding mode of activated carbon monoxide, resulting in a 94% efficient reaction.
Rice University chemists have developed a novel process for synthesizing fluoroketones, precursors for drug design and manufacture. The new method uses a cerium-based catalyst, which produces functional precursors under mild conditions in about 30 minutes.
For the first time, scientists have shown that positively charged iodine (iodonium) can favorably interact with a silver cation, breaking the strong electrostatic repulsion. This unexpected affinity is useful for various applications, including cloud seeding and artificial rain generation.
Researchers at Kanazawa University developed a simple and cost-effective way to extract palladium and silver from industrial waste. The new method uses ultrasmall particles of cellulose to selectively adsorb metal ions, resulting in high metal ion adsorption capacities and efficient recovery of pure and elemental metals.
Rice University scientists found that van der Waals force can indent rigid nanosheets, changing their electromagnetic properties. The researchers discovered that the force is sufficient to deform 8-nanometer-thick silver sheets into curvilinear structures with potential applications in nanophotonic research and catalytic systems.
Researchers at Tokyo Institute of Technology discovered that doping platinum thiolate nanometal clusters with silver increases photoluminescence by 18 times. The team found that the silver ion stabilizes the complex structure, maintaining a highly ordered tiara-like arrangement and enhancing phosphorescence.
A KAUST team has developed a printable ink with high conductivity and transparency for use in solar panels and novel electromagnetic wave blocking. The ink's performance was demonstrated in a frequency selective surface, showing decent reflection across multiple frequencies and polarization insensitive results.
A study by chronobiologists from the University of Groningen found that Olympic swimmers performed best in the finals due to their biological clock. The researchers analyzed times from four Olympic Games and found a significant sinusoid performance pattern over the course of a day, with peak performance occurring late afternoon.
Researchers from Peter the Great St. Petersburg Polytechnic University successfully created silver nanoparticles in an ion-exchanged glass using infrared nanosecond laser pulses. The nanoparticles demonstrate surface plasmon resonance, enabling signal enhancement of up to 10^6 times in Raman spectroscopy.
Researchers developed a simple, low-cost method to synthesize silver nanoparticles using habanero peppers. The process utilizes the antioxidant properties of the peppers to reduce silver ions, resulting in stable nanoparticles with potential applications in optics, biosensing, and antimicrobial coatings.
Researchers at Duke University use plasmonics to boost fluorescence in diagnostics, increasing test brightness by over 150 times. The approach could make point-of-care diagnostics more widespread and affordable.
Researchers used advanced imaging to study proteins at the molecular level in live E. coli bacteria. Silver ions caused paired DNA strands to separate and protein binding to weaken, resulting in faster protein movement. This new understanding could help develop better antibiotics using silver nanoparticles.
Researchers at CNRS/Muséum National d'Histoire Naturelle/Ministère de la Culture have solved the mystery of the world's first colour photographs. They found that colours were due to the presence of metallic silver nanoparticles, which reorganise according to light energy, absorbing all colours except their own.
Researchers at the Institute for Basic Science have developed a new strategy to convert CO2 into oxygen and pure carbon monoxide using nanoparticles. The hybrid catalyst, made of blue titania, tungsten trioxide, and silver, shows 200 times higher performance than previous versions.
Researchers at Wake Forest University have developed a new process to convert carbon dioxide into usable chemicals or fuels using silver diphosphide as a novel catalyst. The process reduces energy loss by a factor of three compared to current state-of-the-art methods.
Mordanñage is a 19th-century photographic process that creates dramatic black-and-white images with veiling effects. Researchers have determined the chemical details behind the process, revealing how hydrogen peroxide and acetic acid soften the photographic paper, allowing copper to oxidize and form veils.
Researchers create metal that is 42 percent stronger than previous record while maintaining electrical conductivity. The team's discovery combines nanocrystalline and nanotwinned structures to overcome traditional trade-offs between strength and conductivity.
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.