Current Gold News and Events

Current Gold News and Events, Gold News Articles.
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A single-molecule guide to understanding chemical reactions better
Scientists at Tokyo Institute of Technology (Tokyo Tech) report measurement of electrical conductivity of single DNA molecules as a way of monitoring the formation of double-stranded DNA on a gold surface. In their latest paper, they investigate the time evolution of the reaction and report findings not observed previously, demonstrating the suitability of the single-molecule approach in elucidating reaction pathways and exploring novel chemical processes. (2021-02-04)

NTU Singapore team develops portable device that creates 3D images of skin in 10 minutes
A team from Nanyang Technological University, Singapore (NTU Singapore) has developed a portable device that produces high-resolution 3D images of human skin within 10 minutes. (2021-02-02)

Easily assembled gold nanoparticle scaffolding serves as molecular probe
The development of pharmaceutical treatments is difficult -- clinicians and researchers know a certain drug can regulate particular functions, but they might not know how it actually works. Researchers at Tokyo University of Agriculture and Technology (TUAT) have developed a new, streamlined method to better understand the molecular mechanisms underpinning these interactions. (2021-02-01)

Physicists have developed new material for water desalination
Titanium dioxide nanoparticles decorated by gold absorb about 96% of the solar spectrum and turn it into heat. The material can accelerate the evaporation in desalination plants up to 2.5 times and can track hazardous molecules and compounds. An international research team with representatives from Far Eastern Federal University (FEFU), ITMO University, and the Far Eastern Branch of the Russian Academy of Sciences, published a related article in ACS Applied Materials and Interfaces. (2021-02-01)

Breakthrough design at UBCO vastly improves mechanical heart valve
New research coming out of UBC's Okanagan campus may take the current 'gold standard' for heart valves to a new level of reliability. A team of researchers at UBCO's Heart Valve Performance Lab (HVPL) has developed a way to improve overall blood flow through the valves, so the design of mechanical heart valves will more closely match the real thing. (2021-01-26)

New technique builds super-hard metals from nanoparticles
Brown University researchers have shown a way to make bulk metals by smashing tiny metal nanoparticles together, which allows for customized grain structures and improved mechanical and other properties. (2021-01-22)

Gold nanoparticles more stable by putting rings on them
Hokkaido University scientists have found a way to prevent gold nanoparticles from clumping, which could help towards their use as an anti-cancer therapy. (2021-01-21)

University at Buffalo researchers report quantum-limit-approaching chemical sensing chip
University at Buffalo researchers are reporting an advancement of a chemical sensing chip that could lead to handheld devices that detect trace chemicals -- everything from illicit drugs to pollution -- as quickly as a breathalyzer identifies alcohol. (2021-01-11)

'Soft' nanoparticles give plasmons new potential
Rice University scientists couple gold nanoparticles with soft polymers that pull energy from the gold's plasmonic response to light. That energy can then be used to catalyze chemical reactions. (2020-12-22)

When less is more: A single layer of atoms boosts the nonlinear generation of light
A wide array of technologies, ranging from lasers and optical telecommunication to quantum computing rely on nonlinear optical interaction. Typically, these nonlinear interactions, which allow a beam of light, for example, to change its frequency, are implemented by bulk materials. (2020-12-14)

Making cheaper, biocompatible E-skin electrodes
DGIST materials scientists and colleagues in Korea have improved electrical conductivity in a polymer electrode for E-skin applications. Their approach is simple and cheap, but further enhancements are needed for the polymer to become a viable alternative to more expensive gold electrodes. The scientists published their findings in the journal Biosensors and Bioelectronics. (2020-12-10)

Researchers identify the physical mechanism that can kill bacteria with gold nanoparticles
A multidisciplinary team of researchers have discovered that the mechanical deformation of bacteria is a toxic mechanism that can kill bacteria with gold nanoparticles. The results of this research are a breakthrough in researchers' understanding the antibacterial effects of nanoparticles and their efforts to find new materials with bactericide properties. (2020-12-10)

Paper-based electrochemical sensor can detect COVID-19 in less than five minutes
A team from the University of Illinois at Urbana-Champaign's Grainger College of Engineering has developed a rapid, ultrasensitive test using a paper-based electrochemical sensor that can detect the presence of the virus in less than five minutes. It uses a graphene biosensor and is adaptable to other viruses. (2020-12-07)

Mine ponds amplify mercury risks in Peru's Amazon
The proliferation of pits and ponds created in recent years by miners digging for gold in Peru's Amazon has altered the landscape and amplified the risk of mercury poisoning, a new study shows. In some watersheds, there's been a 670% increase in land area covered by abandoned mining pits that have filled in with water. Low-oxygen conditions in these ponds accelerate the conversion of submerged mercury, a leftover from the mining, into highly toxic methylmercury. (2020-11-27)

Quantum nanodiamonds may help detect disease earlier
The quantum sensing abilities of nanodiamonds can be used to improve the sensitivity of paper-based diagnostic tests, potentially allowing for earlier detection of diseases such as HIV, according to a study led by UCL researchers in the i-sense McKendry group. (2020-11-25)

Remote control of heat nanosources motion and thermal-induced fluid flows by using light forces
The application of light for simultaneous heating and controlled motion of nano-objects is a great challenge in nanotechnology and science. Scientists from Spain have demonstrated the transport of hot nanoparticles remotely controlled on demand via engineered optical propulsion forces provided by freestyle laser traps. Moreover, they have discovered that the associated thermal-induced fluid flows can be also controlled by this way. This achievement paves a way for further development of micro-robotic optofluidic tools. (2020-11-22)

Gold nanoparticles turn the spotlight on drug candidates in cells
A team including researchers from Osaka University has developed a surface-enhanced Raman scattering (SERS) microscopy technique for tracking small molecules in live cells. The technique uses gold nanoparticles to boost the signal from alkyne group tags attached to the molecules. The alkyne group has a minimal effect on the drug molecule behavior and provides a signal that can be easily distinguished from the cell background. Their technique is expected to be useful in drug discovery. (2020-11-18)

Mastering the art of nanoscale construction to breathe easy and bust fraud
An innovative approach to nanoscale assembly has been successfully demonstrated, with the accuracy, scalability and control required to offer new tools for chemical sensing and anti-counterfeiting. The mechanism, which relies on electrophoretic deposition, could also positively impact renewable energy and optoelectronics. (2020-11-17)

New technology allows more precise view of the smallest nanoparticles
Scientists have reported a new optical imaging technology, using a glass side covered with gold nanodiscs that allows them to monitor changes in the transmission of light and determine the characteristics of nanoparticles as small as 25 nanometers in diameter. (2020-11-16)

Higher-resolution imaging of living, moving cells using plasmonic metasurfaces
Researchers at Kyushu University have demonstrated that placing cells on a plasmonic metasurface of self-assembled gold nanoparticle can improve the resolution of images of living cells taken in real-time under a widefield fluorescence microscope. The metasurface effectively confines light emission from parts of the cell near the metasurface to a nano-thickness plane, providing a simple method to improving both axial and lateral resolution. (2020-11-06)

Tiny golden bullets could help tackle asbestos-related cancers
Gold nanotubes - tiny hollow cylinders one thousandth the width of a human hair - could be used to treat mesothelioma, a type of cancer caused by exposure to asbestos, according to a team of researchers at the Universities of Cambridge and Leeds. (2020-10-26)

Researchers use gold nanorod scattering to identify immune system's 'killer and savior'
Researchers have utilized the scattering of gold nanorods to identify M1 and M2 macrophages. Further development of this technique will lead to a new point of care or a biopsy tool which can predict the stages of manifestation of diseases like cancer, atherosclerosis, and fibrosis just from the simple tissue fluids or blood samples. (2020-10-20)

Inexpensive and rapid testing of drugs for resistant infections possible
A rapid and simple method for testing the efficacy of antibacterial drugs on infectious microbes has been developed and validated by a team of Penn State researchers. (2020-10-15)

Olympic athletes should be mindful of their biological clocks
Biological clocks have sizeable effects on the performance of elite athletes. This conclusion was drawn by chronobiologists from the University of Groningen after studying the times achieved by swimmers in four different Olympic Games. Shifting the clock to reach peak performance at the right time could make the difference between winning and losing. The results were published on 8 October in the journal Scientific Reports. (2020-10-08)

One electrode fits all functional groups
IBS and KAIST researchers employed the gold electrode and attached the target molecules onto the electrode. Just like functional groups generate diverse electronic effects, one electrode fits all reactions as the single electrode can behave like multiple functional groups just with the switch of applied voltage. (2020-10-08)

Molecular swarm rearranges surface structures atom by atom
Researchers at the University of M√ľnster have now developed a molecular tool which makes it possible, at the atomic level, to change the structure of a metal surface. The restructuring of the surface by individual molecules - so-called N-heterocyclic carbenes - takes place similar to a zipper. The study has been published in the journal ''Angewandte Chemie International Edition''. (2020-10-07)

Diamonds found with gold in Canada's Far North offer clues to Earth's early history
The presence of diamonds in an outcrop atop an unrealized gold deposit in Canada's Far North mirrors the association found above the world's richest gold mine, according to University of Alberta research that fills in blanks about the thermal conditions of Earth's crust three billion years ago. (2020-10-06)

Scientists capture candid snapshots of electrons harvesting light at the atomic scale
A team of scientists led by Berkeley Lab has gained important new insight into electrons' role in the harvesting of light in artificial photosynthesis systems. The scientists say that their findings can help researchers develop more efficient material combinations for the design of high-performance solar fuels devices. (2020-09-30)

VA Boston and BU researchers streamline PTSD diagnosis with machine learning
Now, researchers from the VA Boston Healthcare System and the Boston University School of Public Health (BUSPH) have used machine learning to explore streamlining the ''gold standard'' diagnostic tool for PTSD. (2020-09-29)

Controlling ultrastrong light-matter coupling at room temperature
Physicists at Chalmers University of Technology in Sweden, together with colleagues in Russia and Poland, have managed to achieve ultrastrong coupling between light and matter at room temperature. The discovery is of importance for fundamental research and might pave the way for advances within, for example, light sources, nanomachinery, and quantum technology. (2020-09-23)

Mirror-like photovoltaics get more electricity out of heat
New heat-harnessing 'solar' cells that reflect 99% of the energy they can't convert to electricity could help bring down the price of storing renewable energy as heat, as well as harvesting waste heat from exhaust pipes and chimneys. (2020-09-21)

Elements of surprise: neutron stars contribute little, but something's making gold, research finds
Neutron star collisions do not create the quantity of chemical elements previously assumed, a new analysis of galaxy evolution finds. The research also reveals that current models can't explain the amount of gold in the cosmos - creating an astronomical mystery. The work has produced a new-look Periodic Table, showing the stellar origins of naturally occurring elements from carbon to uranium. (2020-09-15)

Dipanjan Pan demonstrates new method to produce gold nanoparticles in cancer cells
Researchers published a seminal study in Nature Communications that demonstrates for the first time a method of biosynthesizing plasmonic gold nanoparticles within cancer cells, without the need for conventional bench-top lab methods. It has the potential to notably expand biomedical applications. (2020-09-11)

High-precision electrochemistry: The new gold standard in fuel cell catalyst development
As part of an international collaboration, scientists at Argonne National Laboratory have made a pivotal discovery that could extend the lifetime of fuel cells that power electric vehicles by eliminating the dissolution of platinum catalysts. (2020-09-10)

Scientists develop low-cost chip to detect presence and quantity of COVID-19 antibodies
Robust and widespread antibody testing has emerged as a key strategy in the fight against SARS-CoV-2, the virus responsible for the COVID-19 pandemic. However current testing methods are too inaccurate or too expensive to be feasible on a global scale. But now, scientists at the Okinawa Institute of Science and Technology Graduate University (OIST) have developed a rapid, reliable and low-cost antibody test. (2020-09-08)

Boundaries no barrier for thermoelectricity
Rice University researchers show how thermoelectricity hurdles some defects, but not others, in gold nanowires. The discovery has implications for making better thin-film electronic devices. (2020-09-08)

Personal success more appreciated than team dominance in sports, business
People enjoy witnessing extraordinary individuals - from athletes to CEOs -extend long runs of dominance in their fields, but they aren't as interested in seeing similar streaks of success by teams or groups, according to new research from Cornell University. (2020-09-03)

Combining PCR and antibody tests at point of care dramatically increases COVID-19 detection
A Cambridge hospital has piloted the use of combined rapid point-of-care nucleic acid and antibody testing for SARS-CoV-2 infection after researchers at the University of Cambridge showed that this approach was superior to virus detection alone for diagnosing COVID-19 disease. (2020-09-02)

People love winning streaks by individuals -- teams, not so much
People enjoy witnessing extraordinary individuals - from athletes to CEOs - extend long runs of dominance in their fields, a new study suggests. But they aren't as interested in seeing similar streaks of success by teams or groups. ''Everyone wants Usain Bolt to win another gold medal for sprinting. Not so many people want to see the New England Patriots win another Super Bowl,'' said Jesse Walker, lead author of the study. (2020-08-31)

Pot of gold engineered to help with early disease detection
University of Queensland researchers have developed biosensors that use nanoengineered porous gold which more effectively detect early signs of disease, potentially improving patient outcomes. (2020-08-24)

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