Articles tagged with Gold Nanoparticles
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.
Researchers developed a compact photonic resonator absorption microscope for point-of-care diagnostics, using photonic crystal biosensors to detect proteins or other biomarkers linked to gold nanoparticles. The portable instrument costs $7,000 and has potential applications in detecting various cancers.
Researchers developed a wearable, biocompatible, and low-cost biosensor that measures electromyography signals in muscles. The sensor uses a gold-silver nanocomposite printed onto fabric, providing a comfortable and effective way to track muscle activity.
Researchers have successfully created chiral objects using DNA origami and gold nanoparticles, exhibiting efficient energy transmission. The discovery enables potential applications in virus detection and optical computing, leveraging the unique properties of plasmonic transmitters.
Scientists at Johannes Gutenberg University Mainz developed a novel implantable sensor using color-stable gold nanoparticles that report concentration changes of substances in the body through color changes, enabling long-term monitoring of disease progression and therapeutic success.
Researchers have developed a simple blood test that can detect acute liver damage earlier than current methods. The test uses gold nanoparticles to target the antioxidant glutathione, which is depleted in damaged liver cells. This early detection could lead to faster recovery and improved treatment outcomes for patients with liver injury.
Researchers at Hokkaido University have developed a method to prevent gold nanoparticles from clumping, which could improve their effectiveness as anti-cancer therapy. Attaching ring-shaped synthetic compounds to gold nanoparticles retains their light-absorbing properties and maintains dispersion in solution.
Researchers have discovered a physical mechanism that gold nanoparticles use to kill bacteria by deforming their cell walls. This mechanism could lead to the development of new bactericide materials as an alternative to antibiotics.
Researchers from Osaka University have developed a technique to visualize small-molecule drugs in cells using gold nanoparticles and surface-enhanced Raman scattering (SERS) microscopy. This approach allows for real-time observation of the dynamics of small molecules inside target cells, providing valuable insights for drug discovery.
Researchers used picosecond time-resolved X-ray photoelectron spectroscopy to study electron transfer between gold and titanium dioxide nanoparticles. They found two electrons transferred from gold to titanium dioxide, with only one in 1,000 photons generating an electron-hole pair.
Dipanjan Pan and collaborators have developed a novel method to synthesize plasmonic gold nanoparticles within cancer cells, eliminating the need for traditional laboratory methods. The approach has potential applications in x-ray imaging and therapy, with possibilities for targeted drug delivery.
Researchers develop gold nanoparticles that selectively inhibit extrasynaptic glutamate receptors, preserving neurotransmission while blocking excessive activation. This breakthrough offers promising perspectives for targeted therapy without major side effects.
A Washington University engineer has received a grant to develop a rapid and highly sensitive COVID-19 test using the new biolabeling technology called plasmonic-fluor. The test is expected to be 100 times more sensitive than traditional methods, allowing for earlier diagnosis and reducing false negatives.
Researchers discovered a synthetic gold-based compound that inhibits adipogenesis and reduces key metabolites, potentially treating obesity. The D-AuNPs showed nontoxicity to cells at high concentrations, offering a new avenue for obesity medicine.
A team of NYU Abu Dhabi researchers have developed a new, one-pot synthetic approach to obtain water-stable and ready-to-use gold nanoparticles. These nanoparticles can be heated with a simple green laser, improving their ability to penetrate and destroy malignant cells through hyperthermia while releasing chemotherapeutic drugs.
Researchers found gold nanoparticles undergo significant transformations after a few weeks in cellular environments. They revealed mechanisms of detoxification and cell protection, also seen in the degradation of other nanomaterials.
Researchers at Flinders University have discovered a nanomesh drug delivery system that can effectively treat antibiotic-resistant bacteria. The system, which uses electrospinning and gold nanoparticles, was tested with antibiotics Colistin and Vancomycin and showed promising results.
Scientists at UNIGE and Swansea University develop gold nanoparticles that activate B lymphocytes without harming them, leading to potential breakthroughs in vaccine development and cancer treatment. The use of these nanoparticles improves the efficacy of pharmaceutical products while reducing side effects.
A proof-of-principle study shows that gold nanoparticles loaded with CRISPR safely and effectively edited blood stem cells in lab models of HIV and inherited blood disorders. The researchers found that the Cas12a protein partner delivered precise genetic edits, which were maintained for eight weeks after injection.
The new test detects protease markers in humans, animals, and food products, indicating disease presence. It can be used anywhere without laboratory conditions, providing faster diagnosis and saving time and money.
Scientists from the University of Bath and Northwestern University have developed a new ultra-sensitive sensor using a gold nanoparticle array, detecting tiny amounts of material with great potential. The sensing mechanism is affected by molecules binding to the surface of nanoparticles, providing a means for detecting small molecules ...
Researchers at Polytechnique Montréal have developed a technology that uses a femtosecond laser and gold nanoparticles to make precise incisions in cells, allowing for effective gene delivery. This breakthrough offers new hope for treating eye diseases such as glaucoma, retinitis, and macular degeneration.
Researchers at Hokkaido University create photoelectrode that harnesses 85% of visible light, 11 times more efficient than previous methods. The innovative design uses gold nanoparticles to absorb a broad range of wavelengths, enabling efficient conversion of sunlight into renewable energy.
A new nanoactuator system has been developed that can tune the conformation of biomolecules using an electric field. The system uses a gold nanoparticle tethered on a conducting surface, which can be moved reversibly using electric fields and monitored optically via changes in its plasmon resonance.
A study by environmental engineers at Duke University found that gold nanoparticles can be dismantled by microorganisms on aquatic plants, complicating laboratory experiments. This discovery highlights the importance of considering complex ecosystems in research design to ensure accurate results.
Researchers at Peter the Great St. Petersburg Polytechnic University, Leibniz University Hannover, and Ioffe Institute create a novel nanocomposite material to harness energy in hydrogen economy. The new structure isolates gold nanoparticles from silicon, increasing efficiency.
Researchers at Rutgers University have developed star-shaped gold nanoparticles that can produce hydrogen from water over four times more efficiently than other methods. The breakthrough uses visible and infrared light to excite electrons in the gold nanoparticles, which then catalyze the reaction.
Researchers developed a technique using gold nanoparticles to trigger unfolding of 3D structures in shape memory polymers. The polymer unfolds when exposed to specific wavelengths of light, offering flexibility and tunable optical properties.
Researchers from Sun Yat-sen University have identified gold nanoparticles in two plant species, B. nivea and E. Canadensis, collected from their natural environments. The particles were found to be similar in characteristics to artificial ones, suggesting they may have been absorbed through plant pores directly.
Researchers at Stanford University have discovered a new method for creating gold nanoparticles in water droplets, which could lead to more sustainable ways of producing these materials. The technique uses microdroplets as reactors and eliminates the need for potentially toxic reducing agents.
Researchers successfully created chirality-evolving gold nanoparticles with amino acids and peptides. The new synthesis method enables color modulation by controlling light polarization, paving the way for future displays.
Researchers from Tokyo Metropolitan University have created a way to mount gold nanoparticles on a molecular support, achieving nearly 100% conversion of carbon monoxide over a wide temperature range. The discovery reveals the crucial role of water in catalysis, promising new applications for gas purification and industrial filtration.
Researchers have developed 'hairy' nanoparticles that can assemble and disassemble on demand, allowing for simultaneous delivery of therapeutic drugs and heating to cancer cells. This technology combines light-sensitive materials with water-repelling yet light-absorbing materials to create photo-responsive gold nanoparticles.
Researchers have developed a multifunctional vehicle using gold nanoparticles to transport and release the CRISPR-Cas9 system for targeted gene editing in tumors. The platform combines hyperthermal cancer therapy with genetic modification, offering a promising approach for tumor therapy.
Researchers at Northwestern University develop a technique to create new classes of optical materials with precise control over particle architectures. The method combines DNA-programmed self-assembly with top-down lithography, resulting in optically active superlattices that can exhibit almost any color across the visible spectrum.
A team of scientists used supercomputers to explore the optical properties of plasmonic nanovesicles, which could lead to breakthroughs in cancer treatment and studying the nervous system. The researchers designed golden nanopills that can be triggered by laser light to release drugs or molecules.
Gold nanoparticles have been found to change cells in a specific size, potentially allowing for faster and more effective medication delivery. Researchers believe this technology could be used to target tissues or as imaging agents, but must be exact to avoid danger.
Researchers at the University of Houston have made an unexpected discovery that leads to a new theory of liquid streaming. The researchers generated a liquid stream using a pulsed laser and found that gold nanoparticles played a crucial role in creating the phenomenon, which they called acoustic streaming.
Researchers at Michigan Technological University have developed test strips for cancer detection that can identify minute concentrations of biomarkers using nanoparticles. The new technology adds a thin skin of platinum to gold nanoparticles, making it easier to observe changes on the test strip and increasing accuracy.
Researchers engineered antibodies to target EGFR on bladder tumors and used gold nanoparticles to deliver heat via plasmon resonance. This technique successfully slowed and reversed tumor growth in mice, with minimal side effects.
Researchers have discovered that fluorescence in ligand-protected gold nanoclusters is an intrinsic property of the gold particles. The study used Au20 nanoparticles with a tetrahedral structure and found intense fluorescence at a wavelength of 739.2 nanometers, indicating that the metal core is responsible for the phenomenon.
Scientists have developed a new method for detecting extremely small amounts of DNA using associating and dissociating nanodimer analysis (ADNA). The method can differentiate true signals from noise and detect deviations of individual bases, with a detection limit of about 46 DNA copies.
Naren Vyavahare is advancing research into abdominal aortic aneurysms, aiming to develop new treatments and improve diagnoses using nanoparticles. The goal is to ease anxiety and prevent surgery for thousands of patients with this potentially life-saving therapy.
The study reveals how simple organic citrate ions can interact with gold atoms to yield stable nanoparticles. These clusters are useful as catalysts, drug delivery systems, anti-cancer agents, and components of solar cells.
Scientists at NIST have developed a new device that measures atomic-scale motion with unprecedented precision. The handheld tool can also be mass-produced to aid in sensing trace amounts of hazardous agents, perfecting robot movement, and detecting weak sound waves.
Researchers created a new cancer drug using gold nanoparticles to deliver paclitaxel directly to tumors, increasing effectiveness while reducing devastating side effects such as hair loss and nerve pain. Early lab tests showed the therapy to be nearly as effective as a high dose of paclitaxel alone.
Researchers have discovered that gold nanoparticles can reduce cell proliferation and migration near pancreatic tumors by interrupting cellular communication. This breakthrough could lead to a new type of treatment for the disease, which affects over 53,000 Americans this year.
Scientists at EPFL have developed a method to position hundreds of thousands of nanoparticles with precision, orienting them within one degree and one nanometer apart. This technique sets the stage for the development of nanometric devices such as optical detection equipment and biological sensors.
A University of Houston researcher is exploring electron oscillation in porous gold nanoparticles to harness their energy. The goal is to enhance catalytic reactions and boost biosensing, potentially leading to ultrasensitive detection of disease biomarkers.
Researchers at Kyushu University have developed a new method for creating uniform, highly active gold nanoparticle catalysts for fuel cells. The novel approach involves wrapping a graphene support in a specially prepared polymer, resulting in the lowest overpotential ever reported for this type of reaction.
Researchers at the University of Southern California have developed a method for manufacturing nanoparticles on a large scale, using microfluidics technology. This innovation enables the cost-effective production of gold nanoparticles with unique properties, making them ideal for applications in medicine and other fields.
Rice scientists observed that blood serum proteins irreversibly attach, unfold, and bring gold nanoparticles together in low concentrations. This counterintuitive behavior has significant implications for diseases caused by aggregation, such as Alzheimer's, and nanoparticle toxicity issues.
Researchers at McGill University have developed a method to assemble gold nanoparticles using DNA structures, allowing for the creation of novel materials with unique properties. This 'printing press' for nanoparticles has the potential to facilitate use in electronic and medical applications.
Researchers develop novel method to build large arrays of nanolenses using chemical and lithographic techniques, enabling extremely high-resolution imaging or biological sensing. The technique allows for precise control over nanoparticle placement, producing tiny separations that produce the nanolensing effect.
Researchers at North Carolina State University have developed techniques to control the shape and structure of DNA and RNA using charged gold nanoparticles. This breakthrough has significant implications for developing applications such as storing and transporting genetic information, creating custom scaffolds for bioelectronics, and c...
Researchers have created tiny gold nanoparticles that exhibit nature's most intricate patterns, marking the first time a nanoparticle of this size has been crystallized and its structure mapped out atom by atom. These patterns are responsible for the high stability of the particles.
Researchers at the University of Pennsylvania have developed nanoparticles that can interact with oil-water interfaces without clumping together. By measuring pressure and density, they've established universal rules governing the physics of these systems, which could lead to advances in nanomanufacturing, catalysis, and photonic devices.
A new test developed by University of Central Florida scientist Qun Huo uses gold nanoparticles to detect cancer biomarkers, providing more accurate and earlier detection of prostate cancer. The test is cost-effective and has shown promising results in pilot studies, outperforming the current PSA screen.
Researchers at NYU Polytechnic School of Engineering have developed a new colloidal gold test strip that demonstrates high detection sensitivity for cardiac troponin I (cTn-I) detection. The new strip uses microplasma-generated gold nanoparticles, attracting more antibodies and resulting in significantly higher detection sensitivity.