Articles tagged with Gold Nanoparticles
A team of researchers at Northern Arizona University discovered that fabricated gold, copper and iron nanocrystals exhibit pentagonal constructs resembling natural snowflakes, governed by emergence dynamics. This phenomenon holds key findings for controlling nanomaterial synthesis and advancing the field.
Researchers at The University of Osaka have developed an eco-friendly method to produce highly stable and biocompatible gold nanoparticles using microalgae. This breakthrough enables the creation of safer and more effective cancer therapies with fewer side effects for patients.
Researchers have developed atomic-level precision patterning on nanoparticle surfaces using stencils, creating 'patchy nanoparticles' with various shapes and functions. The technique allows for large-scale production of batched particles with intricate designs, enabling the creation of novel materials and metamaterials.
Researchers at Michigan State University have discovered a technique to grow lead halide perovskites, crucial for LEDs, solar cells, and medical imaging. By striking gold nanoparticles with a single laser pulse, they achieved precise control over crystal formation.
Scientists discovered a novel method to synthesize gold-polymer nanocomposites within living E. coli bacteria, creating natural microreactors for complex nanostructure formation. The approach enables spatially controlled and eco-friendly synthesis of functional materials.
Researchers have developed a technique to observe phonon dynamics in nanoparticle self-assemblies, enabling the creation of reconfigurable metamaterials with desired mechanical properties. This advance has wide-ranging applications in fields such as robotics, mechanical engineering, and information technology.
Researchers have developed a simplified one-shot synthesis technique to transform gold nanocubes into consistently sized 35 nm nanospheres, overcoming the technical hurdle of uniform size and shape manufacturing. The approach delivers high-quality nanospheres ideal for biomedical applications like rapid pathogen detection.
Researchers at the University of Warwick have developed a glycopolymer-functionalized gold nanoparticle test to detect Western Diamondback Rattlesnake venom. The assay uses synthetic sugars that mimic natural receptors targeted by venom proteins, offering a potential game-changer for snake envenomation diagnosis.
Researchers at Waseda University develop a new imaging technique that uses neutron activation to transform gold nanoparticles into radioisotopes, enabling long-term tracking of their movement in the body. This breakthrough could lead to more effective cancer treatments and precision monitoring of drug distribution.
A new approach to constructing physical colors on lithium niobate crystals is presented, utilizing gold ion implantation combined with laser direct writing. The technique enables stable, non-fading coloration on the surface of the crystal, with controlled nanoparticle sizes.
The team's novel technique enables high-throughput screening of nanoparticle shapes, sizes, and modifications, reducing associated screening costs. The research demonstrates the distinct preferences of tumour cells for certain nanoparticle configurations, enabling personalized cancer treatments that are safer and more effective.
Research found that iron oxide nanoparticles reduce the lifespan, longevity, and reproductive ability of Enchytraeus crypticus in a 202-day study. Population density may influence nanoparticle toxicity, with lower-density groups experiencing greater harm.
Combining visible light with electrochemistry improves CO2 conversion rates and selectivity, enabling the production of valuable products such as carbon monoxide and hydrogen. The study's findings have significant implications for catalysis research and industrial applications.
Researchers developed a microchip that captures exosomes from blood plasma to identify signs of lung cancer, achieving 10x faster detection and 14x greater sensitivity. The chip uses twisted gold nanoparticles to distinguish between healthy patients and those with lung cancer.
Researchers found that gold nanoparticles can accurately assess kidney injuries using X-rays, correlating with nanoparticle accumulation. However, caution is needed when employing nanomedicines to patients with compromised kidneys.
Researchers at Purdue University have developed a patent-pending optical counterfeit detection method for chips called RAPTOR, which exceeds traditional methods by up to 40% in accuracy. The technology uses deep learning to identify tampering and has been validated through simulations.
Researchers have developed a cost-effective and easily reproducible point-of-care testing device that can accurately measure cortisol levels in the blood. The device uses iridium oxide nanoparticles to improve stability, sensitivity, and selectivity, allowing for commercial use.
A new study enables the reconfiguration of nanoparticles, a step toward smart materials and coatings. The approach combines electron microscopy, computer simulations, and microscopic channels, allowing researchers to watch how nanoparticles react to changes in their environment.
A new method uses deep learning and gold nanoparticle patterns to detect tampered chips with high accuracy. The approach outperforms previous methods in detecting counterfeit chips, offering a promising solution for the $75 billion industry.
A new study by Prof. Daniel Mandler and his team found that organic molecules can significantly influence the electrical properties of gold nanoparticles, up to 71 mV. The research highlights the importance of capping agents in controlling nanoparticle behavior and provides insights for customizing their interactions.
Researchers found seawater mixed with ore fluids to form gold, revealing a new mechanism for gold vein formation. This discovery could lead to the identification of high-grade gold deposits in sub-seafloor settings, reducing environmental impact.
Researchers found that chiral gold nanoparticles exhibit high selectivity for left- or right-handed circularly polarized light with a dissymmetry factor of approximately 0.7, outperforming previous materials. The findings suggest potential applications in anti-counterfeiting and quantum information using circularly polarized light.
Researchers explore nanoparticle-based therapies to specifically target lymphatic metastasis in breast cancer, providing a promising solution for patient treatment. Nanoparticles deliver drugs directly to tumors, targeting cancer cells to destroy them or slow their growth, while also enhancing the immune response.
Researchers at Flinders University have discovered a novel method to produce gold nanoparticles in water using a vortex fluidic device, eliminating the need for toxic chemicals. The technique also generates hydrogen and hydrogen peroxide through contact electrification reactions.
Researchers developed a bioelectronic chip that can detect vitamins C and D in body fluids, offering a low-cost and easy-to-use solution for micronutrient monitoring. The chip is disposable, flexible, and can be adapted for wearable devices, enabling personalized diets and prevention of deficiencies.
Researchers develop a new method using gold nanoparticle decorated polymers (GNDP) to improve detection of antigen-antibody reactions in infectious diseases. This approach results in higher optical density and improved sensitivity compared to traditional methods.
Researchers at Tokyo Metropolitan University developed a method to coat gold nanoparticles on silica with a single nanosheet of mixed metal oxide, boosting their catalytic activity. The new catalyst showed significant improvements in converting carbon monoxide to carbon dioxide, outperforming existing methods.
Researchers have developed a new urine-based test for early detection of ovarian cancer using nanopore sensing technology. The method can simultaneously identify multiple peptides, including those derived from LRG-1, and shows promise for improving 5-year survival rates by up to 75%.
Researchers at the University of Tokyo discovered a way to improve gold catalysts' durability by creating a protective layer of metal oxide clusters. The enhanced gold catalysts can withstand a greater range of physical environments, increasing their range of possible applications and reducing energy consumption.
The development of a compact microchip laser system paves the way for simple benchtop preparation and direct use of metal nanoparticles in catalytic reactions. The study reveals that the microchip laser exhibits high ablation efficiency despite having smaller pulse energy compared to conventional lasers, making it an attractive alterna...
A KAIST research team developed an anti-icing film coating technology using gold nanoparticles and cellulose nanocrystals. The film can uniformly pattern gold nanorods in quadrants through simple evaporation, achieving enhanced plasmonic photothermal properties.
Scientists have introduced a new class of protease-activity sensors using gold nanoparticles equipped with peptide DNA, which can detect multiple active proteases in parallel. The method works at room temperature and does not require complicated sample preparation or elaborate instruments.
Researchers at Toho University developed a technology to create three-dimensional structures of gold nanoparticles confined within silica nanocapsules. The assembled nanostructures exhibit new physical properties and unique optical properties, leading to the development of high-sensitivity multi-color sensors.
A team of researchers has developed a novel methodology to engineer colloidal quasicrystals using DNA-modified building blocks, revealing new avenues for nanoscale design. The study demonstrates the programmable nature of DNA to design and assemble quasicrystals deliberately.
Scientists at IISc have developed hybrid nanoparticles that can kill cancer cells using heat and enable their detection using sound waves. The nanoparticles combine the photothermal and oxidative stress properties of gold and copper sulphide, making them a promising approach for early detection and treatment.
Rice University chemists have discovered that gold nanoparticles are synthesized from gold buckyballs, a finding that could revolutionize nanoparticle synthesis. This discovery was made by Matthew Jones and Liang Qiao, who found that the commonly used golden 'seed' particles were actually cousins of the original buckyballs.
Researchers at the University of Missouri have developed a new type of nanoclay material that can be customized to perform specific tasks. This breakthrough could lead to advances in fields such as medical science, environmental science, and more.
Researchers at the University of Texas at Dallas have discovered a previously unknown self-renewal mechanism in kidney cells that allows them to rejuvenate themselves and remain healthy. This process is fundamentally different from other regenerative processes, such as cell division, and enables kidneys to function normally for life.
Researchers at NYU Abu Dhabi have developed an innovative adhesive bandage that can quickly detect COVID-19 antibodies in the bloodstream. The test uses gold nanoparticles to recognize and bind to IgM and IgG antibodies, providing users with critical information about their immune response to the infection.
For the first time, researchers reveal that gold nanoparticles can melt and produce gold nanomelts at temperatures lower than macroscopic gold. This discovery opens a new debate on traditional models for gold transport in nature.
A team of researchers from China and the UK has developed new ways to optimise the production of solar fuels by creating novel photocatalysts. These photocatalysts, such as titanium dioxide with boron nitride, can absorb more wavelengths of light and produce more hydrogen compared to traditional methods.
Researchers at Stevens Institute of Technology have developed a drug delivery system using gold nanoparticles to target tumors with remarkable precision. The system reduces the potential for debilitating side effects by delivering drugs selectively to tumors, allowing for lower quantities and potentially life-saving treatments.
A team of FSU chemists has developed a new test for detecting biological markers related to several types of cancer. The sensing platform uses gold nanoparticles and peptides labeled with a dye, emitting light when the enzyme MMP-14 is present, allowing researchers to generate data on cancer marker levels
Researchers have developed a novel imaging method to detect gold nanoparticles in woodlice, allowing for the study of metal toxicity and its impact on the environment. This technique enables scientists to precisely pinpoint the fate of individual gold nanoparticles in complex biological systems.
Researchers from Tokyo Metropolitan University have developed a new catalyst that converts plastic and biomass into organosilane compounds. The hybrid gold nanoparticle catalyst on zirconium oxide support enables mild conditions for the reaction, reducing environmental burden.
Chung-Ang University researchers develop a novel flexible supercapacitor platform with vertically integrated gold electrodes in a single sheet of paper. The design shows low electrical resistance, high foldability, and good mechanical strength, making it suitable for wearable devices.
Researchers have developed a gold nanoparticle probe to detect porcine epidemic diarrhoea virus (PEDV), a devastating disease causing severe diarrhoea and high death rates. The new tool promises fast, affordable diagnosis on-site, critical for preventing future outbreaks and protecting the industry from economic losses.
Researchers have created a new type of polymer that can be triggered by light, enabling faster chemical reactions and more efficient energy use. The polymers, which respond to different wavelengths of light, show promise for use in various fields, including pharmaceuticals and future Mars habitats.
A team at City University of Hong Kong has developed a novel approach to converting environmental temperature fluctuations into clean chemical energy using pyroelectric catalysis. By combining pyroelectric materials with localized plasmonic heat sources, the researchers achieved significantly faster and more efficient pyro-catalytic re...
Researchers have developed chemically modified nanosheets that can effectively deliver drugs to diseased cells, reducing side effects. The nanosheets, made from molybdenum disulphide, can exchange natural thiols with attached ligands, allowing for targeted drug delivery.
Researchers develop new technique to observe plasmons inside gold nanoparticles, revealing relaxation process with implications for energy conversion and development of light-harvesting materials. The ultrafast electron microscope enables analysis of ultrafast light-matter interactions at the nanoscale.
Researchers have designed a new vaccine candidate using bacterial vesicles coated on gold nanoparticles to deliver antigens and stimulate an immune response against tuberculosis. The use of outer membrane vesicles has shown promise in inducing a better immune response compared to traditional subunit vaccines.
Researchers at Aalto University developed a method to produce colors using gold nanocylinders suspended in a gel, controlled by custom DNA molecules. The technique uses polarized light to transmit specific colors depending on the orientation of the nanoparticles.
Researchers found that left-handed chiral gold nanoparticles increased the immune response in human cells even without an antigen, leading to a 25.8% increase in vaccine efficacy. The discovery uses chirality to enhance immune responses, potentially applicable to various vaccines.
Researchers at Clemson University and SSSIHL discovered a novel way to combine curcumin and gold nanoparticles to create an electrode that efficiently converts ethanol into electricity. The discovery brings replacing hydrogen as a fuel cell feedstock one step closer, with potential applications in sensors and supercapacitors.
Researchers at the University of Ottawa developed a spray-on technology using customized nanogold and peptides that can restore heart function and electrical conductivity in damaged hearts. The therapy showed promising results in lab mice, with no off-target organ infiltration by tiny gold particles.
Researchers from Osaka University report a new technique for tracking the synthesis of core–shell bimetallic nanoparticles in real time, allowing for fine-tuning of nanomaterial preparation. The technique uses a piezoelectric resonator to monitor particle shape changes and track interdiffusion of metals.
Researchers have developed a novel method for detecting viruses like Ebola and SARS CoV-2 using simple, inexpensive, and fast nano-sensors. The Nano2RED technology provides 10 times better sensitivity than existing ELISA tests and can be produced at a cost of around 1 cent per test.
Researchers at Nagoya City University developed a novel approach for surface disinfection using harmless visible light, inactivating bacteria and viruses. The study's findings suggest that photothermal effects caused by pulsed laser irradiation can instantly destroy pathogenic microorganisms.
Researchers used machine learning to simulate and analyze gold nanoparticles at high temperatures, providing a key mechanistic picture of the melting mechanism. The study enables fast prediction of forces acting on atoms in nanoparticles, accelerating simulations that would take thousands of years with traditional methods.