Articles tagged with Nanoparticles
A University of Arizona-led research team found that short-term exposure to industrial nanoparticles used in semiconductor manufacturing poses little risk. The study analyzed the physical, chemical and biological attributes of four metal oxide nanomaterials and determined that they showed no adverse effects on human cells or bacteria.
Researchers have developed a new nanoparticle that kills tumor cells in the eye by mimicking an enzyme used by immune cells, extending survival of mice with advanced breast cancer. The treatment offers advantages such as producing toxins per hour and being activated by light.
Researchers found that ceria nanoparticles can reduce inflammation in the brain following a bleeding stroke by decreasing the secretion of inflammatory chemicals. In a lab experiment, macrophages treated with ceria nanoparticles showed less damage and water accumulation at the stroke site compared to untreated cells.
Researchers created a nanoparticle formulation of a targeted cancer drug that selectively targets tumors while sparing healthy tissue. The nanoparticle-encapsulated version showed improved efficacy and reduced side effects in rodent trials.
Engineers at Washington University in St. Louis have developed nanoparticles of calcium carbonate that can modulate pH in solid tumors, keeping cancer from growing. The compound changes the pH of the tumor environment, making it less acidic and preventing metastasis.
Researchers used mathematical calculations to create a complete picture of protein nanoparticle surface morphology, identifying structures most advantageous for vaccine design. This approach may lead to the development of cost-effective vaccines, including a malaria vaccine set to start clinical testing soon.
A team of researchers has developed a new way to prevent preterm birth using nanoparticles, which deliver medication directly to the uterus without crossing the placenta. The treatment, called LIPINDORA, shows promise in reducing preterm labor and avoiding fetal risks.
MIT researchers have developed a way to deliver CRISPR genome repair components more efficiently and safely, correcting mutated genes in 6 percent of liver cells in mice. The new approach has the potential to treat a range of diseases, including metabolic disorders and liver conditions.
Scientists have successfully delivered a CRISPR/Cas9 therapeutic to adult mice with Tyrosinemia type I, correcting 6% of the mutated FAH gene in liver cells. This breakthrough uses AAV and lipid nanoparticle delivery mechanisms, paving the way for potential human treatment.
A paper by Gugliotti et al. in Science reported on RNA-mediated metal-metal bond formation, but an investigation found authors falsified research data. The journal is taking steps to address the concerns and ensure the integrity of its publications.
A nanoparticle drug-delivery system that combines photodynamic therapy with a molecular therapy drug reduces tumor progression and metastasis in animal models. The treatment cuts off common treatment escape pathways, offering new possibilities for synchronized multidrug combination therapies.
Researchers at FAU have discovered that mother-of-pearl is formed through the aggregation of nanoparticles within an organic matrix, rather than crystallisation. This unique process, found in nature, has implications for developing new high-performance ceramics with improved mechanical properties.
Researchers developed bubble-pen lithography, a technique that uses microbubbles to inscribe nanoparticles onto a surface with precise control. This method allows for the creation of new materials and devices, such as metamaterials, with unique properties.
Researchers at the Weizmann Institute of Science have created miniature 'flasks' that can accelerate chemical reactions by trapping molecules in a highly selective manner. The dynamic and reversible clusters can be reused multiple times, making them useful for applications such as drug delivery and industrial manufacturing.
A team of researchers developed a method for guiding replacement cells to diseased vascular segments using nanoparticles, which demonstrated promising results in mice. The fresh cells exert their curative effect in these segments by producing nitric oxide and regulating blood vessel expansion.
Researchers at Toyohashi Tech and Duke University developed a new method to produce oxidation-resistant copper alloy nanoparticles, which can be used as the main component of affordable conductive inks. The production process is economical and environmentally friendly, making it suitable for the advancement of printed electronics.
Researchers induce self-photosensitization of M. thermoacetica with cadmium sulfide nanoparticles, enabling photosynthesis and synthesis of semiconductor nanoparticles for efficient solar-to-chemical production.
UCLA researchers have developed a super-strong yet light structural metal by infusing magnesium with dense silicon carbide nanoparticles, achieving record levels of specific strength and stiffness-to-weight ratio. The new metal has potential applications in airplanes, cars, mobile electronics, and biomedical devices.
Scientists at NIST developed a new recipe development tool using advanced math to predict the capabilities of polymer-nanoparticle mixtures. By modeling particle shapes more realistically, they created virtual nanoparticles that can analyze real-world particles and make general statements about their behavior in mixes.
A team of researchers from North Carolina State University has developed a technique for remotely controlling soft robots by manipulating elastic polymers with magnetic nanoparticles. By arranging the nanoparticles into parallel chains, they can control the movement and direction of the soft robots.
Researchers from McMaster University successfully tracked individual catalyst nanoparticles during heating using advanced electron microscopy techniques. This breakthrough could lead to the development of less expensive catalysts, such as platinum-iron nanoparticles, reducing dependence on imported oil and greenhouse gas emissions.
Berkeley Lab researchers model hot carrier movement in real-time, distinguishing between plasmon and single particle excitation behaviors. The study shows that 90% of plasmon energy can be converted to single particle energy when excitations are in tune.
Researchers have created more efficient nanoparticles in fuel cells, improving the conversion of methanol into electrical energy. The study provides guidelines for controlling the charge of nanoparticles, a crucial step in optimizing catalytic efficiency.
Multiple sclerosis may be triggered by the death of brain cells that make the insulation around nerve fibers. Nanoparticles have been shown to prevent progressive MS in an animal model, offering new hope for human treatments without side effects.
Researchers at FAU and University of Barcelona discovered that platinum nanoparticles lose approximately every tenth electron when in contact with oxide support. This effect can be controlled using theoretical methods, allowing for more efficient catalytic processes and new electronic components.
Scientists have reported a high-performance nanoparticle electrocatalyst for fuel cells, featuring durable and active PtFe nanoparticles coated with nitrogen-doped carbon shells. This breakthrough could lead to the development of more efficient and affordable fuel cell technology.
Researchers developed nanoparticles that target and burst when exposed to near-infrared laser light, releasing therapeutic agents that alter gene activity in cancer stem cells. The study used human prostate-cancer cells and tumors, showing promise for overcoming biological barriers to gene-regulating agents.
Researchers have developed a new method using microwaves to produce BiVO4 nanoparticles for cleaning wastewater, which is 20 times faster and saves energy compared to traditional methods.
Researchers at Oregon State University have discovered a fundamental flaw in the physics of photonic sintering, leading to improved product quality and process efficiency. The new understanding allows for high-quality products to be created at much lower temperatures, twice as fast and with 10 times more energy efficiency.
A new process removes contaminants from oil sands wastewater using sunlight and nanoparticles, offering a more effective and inexpensive alternative to conventional treatment methods. The technology breaks down persistent pollutants into individual atoms, completely removing them from the water.
A new technology uses oscillating electric fields to isolate drug-delivery nanoparticles from blood, overcoming traditional separation methods' limitations. The device can recover nanoparticles in various processes and monitor their interaction with blood proteins.
Researchers at Lund University estimate that sea traffic emissions account for almost half of measured particles in coastal air, exceeding previous estimates. Nanoparticles can penetrate deeper into the lungs than larger particles, contributing to health issues.
Researchers at Brigham and Women's Hospital have developed a new approach to predict which tumors will be most responsive to therapeutic nanoparticles. They use an FDA-approved magnetic nanoparticle and MRI to identify tumors with high or low EPR, a physiological condition that allows nanoparticles to accumulate faster.
Researchers at Vanderbilt University have discovered a way to overcome the limitations of nanoscale materials in batteries by using iron pyrite quantum dots. These ultrasmall nanoparticles allow for faster charging and longer cycle life, making them a promising solution for future battery technology.
Researchers at the University of Michigan found that zinc oxide nanopyramids can disrupt the growth of methicillin-resistant Staphylococcus aureus (MRSA) on medical implants, reducing bacterial load by over 95%. The coating may enable antibiotic treatments to succeed or allow the human immune system to take over.
Researchers at the University of York have developed a self-assembling gel that can selectively extract precious metals like silver and gold from electronic waste. The gel is then converted into conducting nanoparticles, enhancing its electrical conductance and making it suitable for various high-tech applications.
Researchers at Washington University in St. Louis developed nanoparticles that increase the nutrient content and growth of tomato plants. The study found that treated plants produced nearly 82% more fruit than untreated ones, with higher antioxidant content.
Researchers have created genetically encoded magnetic protein nanoparticles that can be produced within cells, allowing for non-invasive tracking and monitoring of cell signals. This technology has the potential to observe communication between neurons, activation of immune cells, and stem cell differentiation, among other phenomena.
Researchers found that nanoparticles can evade the human immune system by changing their sugar coating, making them more visible during MRI imaging. This breakthrough could lead to the development of new medicines to target tumors.
Research on biodegradable nanomedicine shows promise in selectively destroying ovarian cancer cells left behind after surgery. The technology uses nanoparticles to provide real-time imaging and phototherapy treatment during surgery, achieving complete tumor eradication in mice with no adverse effects.
Researchers created a compact photonic switch on silicon nanostructures, enabling ultrafast optical pulse switching at femtosecond rates. This device could revolutionize computing by transferring data at tens and hundreds terabits per second, outperforming traditional electronic devices.
Researchers identified key factors leading to nanoparticles' instability and aggregation in industrial applications. The conditions include the electric force imbalance between particles and attractive or repulsive forces.
Researchers at Helmholtz-Zentrum Berlin improved ultrathin CIGSe solar cells by integrating nanoparticles into the back contact, resulting in increased efficiency and reduced charge carrier loss. This innovative approach enables more efficient light trapping and absorption, paving the way for further design enhancements.
New research shows that candle soot can be used to power the lithium batteries in electric cars, offering a cost-effective and scalable solution. The discovery opens up possibilities for using carbon in more powerful batteries, which could drive down production costs and increase efficiency.
Researchers discovered a technique to renature denatured proteins, restoring their original spatial structure and increasing activity by 180%. This method uses nanoparticles to bind to protein molecules, preventing aggregation and reactivating the active center.
Nanoparticles wrapped in human platelet membranes deliver drugs to targeted sites, increasing therapeutic effects for diseased rats and mice. The platelet-membrane-coated nanoparticles selectively bind to damaged blood vessels and certain pathogens, minimizing the spread of bacteria and enhancing antibiotic efficacy.
Researchers have found that platinum nanoparticles sitting on cheap metal oxide materials convert carbon monoxide into carbon dioxide. The chemical reactions occur due to the interplay between platinum particles and the iron-oxide surface, making them efficient. This new knowledge can be used to create better catalysts.
Physicists have developed a single silicon nanoparticle as an ultrafast all-optical transistor, enabling ultrafast switching and promising for optical computing. The study found that the nanoparticle's properties can be dramatically changed by irradiating it with intense laser pulses, allowing for control of light scattering direction.
Researchers at Chalmers University of Technology have developed a new experimental approach called plasmonic nanospectroscopy to study individual nanoparticles. This method reveals significant differences in properties between seemingly identical particles, which could lead to improved hydrogen sensors for fuel cell cars.
Researchers have developed a system to produce stable, amorphous nanoparticles that dissolve quickly and can be made from a wide range of materials, including inorganic substances with high crystallization propensity. These nanoparticles exhibit different electronic, magnetic, and optical properties than their crystalized counterparts.
Scientists at the University of California, San Diego have developed a new method to build microscopic robots with complex shapes and functionalities. The researchers created microfish-shaped microrobots that can swim efficiently in liquids, are chemically powered by hydrogen peroxide, and magnetically controlled.
Researchers have developed an electrospray technique to improve Langmuir-Blodgett assembly, reducing the need for toxic organic solvents and increasing efficiency. This approach enables the creation of well-dispersed nanoparticle monolayers with precise control over packing density.
Researchers developed a paper-based device that changes color to detect Ebola, yellow fever, or dengue viruses. The test takes minutes and doesn't require electricity, providing a potential solution for remote, low-resource areas.
Scientists at the University of Zurich successfully controlled colloidal nanoparticles' motion, harnessing electric and optical forces to manipulate their behavior. The technique enables rapid displacement, low energy consumption, and large storage capacity, making it suitable for new data storage applications or high-resolution displays.
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 create a technique to emit electrons in a controlled direction using near-fields induced by strong laser pulses on glass nanoparticles. This method has potential applications in cancer therapy and imaging methods.
Researchers developed an EBV vaccine using nanoparticles that induce potent neutralizing antibodies in mice and nonhuman primates. This approach is promising for developing an effective EBV vaccine for humans.
Engineered nanoparticles from common products like paint and sunscreen can harm aquatic organisms when they settle in sediments. The review calls for further research into nanoparticle fate and toxicity in these ecosystems.
Researchers at OIST have developed a way to prevent noble metal nanoparticles from compacting by encapsulating them individually in a porous shell made of a metal oxide. This technique improves the rate of electrochemical reactions in methanol fuel cells, leading to more efficient fuel cell performance.
Researchers at MIT have developed a novel electrode made of nanoparticles with a solid shell, and a yolk that can change size without affecting the shell, improving cycle life and energy storage. The use of aluminum as the key material has proven to be high-rate champion among high-capacity anodes.