Articles tagged with Nanoparticles
Researchers at the University of Illinois developed a new silver-based ink that allows for flexible and stretchable microelectrodes. The ink can be used in electronic and optoelectronic applications to create integrated systems from diverse materials on various substrates.
Researchers at Memorial Sloan Kettering Cancer Center developed a new generation of microscopic particles, called C dots, that are biologically safe and stable. These particles can be customized to target specific molecules on tumor surfaces, enabling earlier detection and more personalized treatment options.
Researchers at University of Warwick developed a single-step process to coat polymers with silica-based nanoparticles, creating versatile materials for self-healing paints and intelligent packaging. The process produces high-performance materials with tailored water or air permeability.
A nontoxic nanoparticle can enter cells, dissolve harmlessly, and release therapeutic drugs or fluorescent dyes. This delivery system has shown promise for treating cancer and vascular diseases.
Researchers at Harvard University have demonstrated that metal nanoparticles in a periodic array can exhibit narrower spectral widths, improving the sensitivity of detecting molecules at low concentrations. By optimizing electromagnetic interactions between particles, the method can enhance spectroscopy and biosensors.
Researchers found ultrafine particles (UFP) with diameters between 2-10 nanometers emitted by kitchen appliances, outnumbering larger particles detected before. This range affects indoor exposure to respiratory and cardiovascular illnesses.
Researchers at the University of Delaware found that plants can take up nanoparticles and accumulate them in their tissues. The study provides a new experimental approach for studying nanoparticles and their potential impacts on the environment and human health.
Researchers at the University of Illinois have discovered a new way to stimulate patchiness in phospholipid membranes using charged nanoparticles. This phenomenon allows the membrane to coexist in two phases - solid and liquid - depending on what binds to it, offering a new mechanism for modulating stiffness in membranes.
Researchers at Duke University discovered that gold nanostars can dramatically enhance the reflected light, making them useful as tracers, labels, or contrast agents. The size and shape of the nanostars affect the spectrum of reflected light, allowing for 'tuning' to identify specific molecules or chemicals.
Researchers observed catalysts restructuring themselves in response to gases, gaining insight into their behavior during reactions. This new understanding enables the development of smart catalysts tailored to optimize chemical reactions.
Researchers create hollow spherical nanospheres that can withstand extreme stress and deform without losing strength, approaching the theoretical ideal shear strength. The spheres' geometry is engineered to reduce stresses at specific regions, allowing them to transfer stress more efficiently.
Researchers at NIST discovered gold nanostars exhibit superior optical qualities for SERS, outperforming nanorods and nanospheres for enhanced signal detection. The team created gold nanostars using surface alterations and demonstrated their ability to amplify molecular signatures.
Purdue University researchers have developed a method of using nanoparticles to deliver treatments to injured brain and spinal cord cells. The team coated silica nanoparticles with a polymer to target and repair injured guinea pig spinal cords, showing improved physiological functioning in treated cells.
Researchers have found that nanoparticles can pass through human skin, especially when damaged, raising concerns about their safety. The study, led by Dr. Lisa DeLouise, used mice as a model and showed that nanoparticles accumulate in skin folds and around hair follicles.
The Center for Environmental Implications of NanoTechnology (CEINT) aims to define the relationship between various nanomaterials and their potential environmental exposure and ecological consequences. Researchers plan to develop a rigorous risk assessment framework, collaborating with policy-makers and society.
Researchers at NC State University have discovered a technique to bring nanoparticles to the surface of thin polymer films using heat, allowing for controllable surface patterns. This breakthrough could lead to tiny reusable bar codes and small fluorescent features that turn off with increasing heat or chemical presence.
Researchers have developed a dual treatment combining nanoparticles with a statin to stop the growth of blood vessels feeding arterial plaques. The treatment reduces plaque activity and prolongs stability in high-risk patients, offering hope for human clinical trials.
Scientists have developed nanometer-sized cargo ships that can evade the body's immune system, ferrying anti-cancer drugs and markers into tumors. The nano-cargo-ship system integrates therapeutic and diagnostic functions in a single device, allowing for targeted delivery of toxic anti-cancer drugs to tumors in high concentrations.
Researchers have developed a new method to fabricate borosilicate glass nanoparticles with increased stability, overcoming limitations of current nanoparticle materials. These nanoparticles could enable applications in diagnostic tests, targeted drug therapy, photonic devices, ultrasonic microscopy, and chemical filtration membranes.
Researchers aim to inform safety by design, safe disposal, and safe manufacturing handling for industrial-scale nanoparticles. The study tracks tagged nanoparticles in the environment to determine their bioaccumulation and transport through the food chain.
The University of Kentucky will investigate how particle size and shape affect brain entry, focusing on nano-sized cerium oxide. The EPA has awarded a $2M grant for four years to examine potential health impacts.
Researchers found networks of iron and nickel nanoparticles embedded within oxide scales, allowing carbon to diffuse through without defects. This discovery could lead to more corrosion-resistant alloys with ten times longer life.
Researchers at the University of Pennsylvania have developed a method to etch graphene along flawless, crystallographic axes using thermally activated nanoparticles. This technique enables the creation of atomically precise, macroscopic length ribbons of graphene with potential applications in integrated circuits.
Scientists at Arizona State University have developed a simple way to make colorful nanocrystals using colloid chemistry methods. The process involves placing nanoparticles in a drop of water on a superhydrophobic surface and letting it dry, resulting in opalescent colors. This method has the potential to create new materials for photo...
Researchers developed nanobialys, spherical particles that can deliver drugs and imaging agents directly to tumors and plaques. The manganese-based nanoparticles are safer than gadolinium-containing particles and have shown promise in animal studies.
Researchers have created a new method for producing functional nanoscale patterns with sub-100 nanometer features. The process uses a flexible polymer membrane and exploits elastic instability to generate long-range orientational order, resulting in stable and reusable diamond-plate patterns with high precision.
A team of researchers at Washington University in St. Louis has developed polymeric nanoparticles that can slowly release doxorubicin, a chemotherapy drug, over an extended time period. The approach aims to improve the delivery of cancer-killing drugs to pediatric brain tumors without harming healthy cells.
Researchers at North Carolina State University found that quantum dots can penetrate rat skin if there is an abrasion, providing insight into potential workplace concerns. The study shows that even minor cuts or scratches could allow these nanoparticles to penetrate deep into the viable dermal layer and potentially reach the bloodstream.
A University of Texas at Austin biomedical engineer has received a $1.5 million grant to develop molecular imaging technologies for cancer screening, diagnosis, and therapy using nanoparticles. The project aims to detect and treat cancer at the cellular level, targeting cancer cells while sparing healthy tissue.
Researchers at Cornell University have developed a new method to self-assemble metals into complex nanostructures. This allows for the creation of more efficient catalysts for fuel cells and industrial processes. Additionally, it enables the development of microstructured surfaces to enhance conductor performance.
A $400,000 grant from the U.S. Department of Energy is funding a study to investigate the transport and environmental risks of nanomaterials. Researchers will examine how nanoparticles are partitioned and transported in the environment and human body.
Researchers at Argonne National Laboratory have discovered the structure of nanoparticle haloing, a new method for stabilizing colloids. The discovery reveals that nanoparticles form a loosely organized layer around microspheres, suggesting a weak attraction between the two, and opens up new possibilities for producing novel materials.
A new study by the National Institute of Standards and Technology (NIST) investigated the dietary accumulation, elimination, and toxicity of fluorescent quantum dots in a simplified food chain. The researchers found that while the nanomaterials were transferred across the food chain, they did not accumulate in higher organisms.
Researchers have created the smallest magnetic nanoparticles to date that can be used to locate cancer cells during MRI scans. The particles are about 8.4 nanometers in size and emit a stronger signal for detection, making them ideal for detecting tumors without surgery.
Researchers developed nanoparticles consisting of metallic iron with a protective carbon coat that could serve as a safe and effective hyperthermia agent. The carbon coating prevented the iron from rusting, allowing heating at greater temperatures and reducing cytotoxic effects on normal cells.
Scientists create microscopic vehicles that can navigate the bloodstream, targeting tumors with high precision. The nanoworms, coated with a tumor-specific molecule, remain in circulation for hours, offering potential for more effective delivery of toxic anti-cancer drugs.
Research found nanoparticles can adhere tightly to soil particles in salty water but flow easily with stabilizers like natural organic compounds. This affects municipal filtration systems' ability to retain nanoparticles, with up to 77% retained by sand and 8-49% by glass beads.
Researchers have found that silver nanoparticles destroy benign bacteria used to remove ammonia from wastewater treatment systems. The presence of these particles can hinder the reproduction activity of good bacteria, potentially harming soil and food crops.
Using a bioinspired approach, researchers mimicked magnetotactic bacteria to synthesize ferromagnetic nanoparticles with desirable magnetic properties. The team successfully produced cobalt-ferrite nanoparticles, which have more desirable magnetic properties than magnetite.
A team led by Byron Brehm-Stecher is investigating the potential of silver nanoparticles to improve food safety. They aim to develop applications such as antimicrobial fabrics and surfaces, which could help kill foodborne pathogens and enhance shelf life.
Purdue University researchers found that manufactured nanoparticles, known as Buckyballs, do not affect microbes that break down organic substances in wastewater. The study's lead author notes that the microbes' resiliency to high Buckyball levels is an important finding for assessing environmental behavior of nanomaterials.
Researchers warn of unforeseen environmental and health consequences of nanosilver in consumer products, as simple experiments show nanoparticle silver can leach into waterways. Improved product labeling is proposed to increase public awareness.
Researchers used nanotechnology to target tumors in rabbits, achieving a 1,000-fold reduction in chemotherapy dose while slowing tumor growth. The nanoparticles delivered a fungal toxin called fumagillin directly to growing blood vessels, inhibiting tumor expansion.
Physiologists investigate nanoparticles' potential to cause diseases like atherosclerosis and kidney stones. Researchers are exploring how nanoparticles interact with cells and tissues to understand their role in these conditions.
Researchers discover nanominerals have a significant impact on Earth's systems, influencing climate, ecosystems and human health through their unique properties. Nanoparticles play a crucial role in the lives of ocean-dwelling phytoplankton, affecting carbon cycling and global temperatures.
The review article reveals that nanominerals exhibit a range of physical and chemical properties depending on size and shape, influencing earth systems in complex ways. This shift in understanding has significant implications for fields like environmental science and geology.
Researchers developed a DNA-guided method for controlling nanoparticle assembly, enabling precise manipulation of materials. Scientists also made progress in understanding the 'pseudogap' phenomenon in high-temperature superconductors, which could lead to improved superconductor design.
Researchers discovered that materials like silica behave as ductile as gold at the nanoscale due to surface atom dominance. Nanoparticle size and morphology affect ductility and tensile strength.
Inhalation of diesel exhaust induces stress response in brain activity, altering information processing. Researchers found that even short exposure can cause changes in brain waves, with effects lasting after subjects leave the room.
Researchers at NIST developed a new microscope design that tracks nanoparticles in solution as they move in three dimensions. This technology will help optimize nanoparticle assembly processes for better control and design of nanotech devices.
Researchers at UNC Chapel Hill have created silica nanoparticles that store and release nitric oxide to kill bacteria effectively. This approach avoids the issue of controlling NO release with small molecules, which can be toxic to healthy cells.
Nanoparticles have been shown to enhance the performance and stability of liquids when exposed to electric fields, leading to potential applications in miniature camera lenses, cell phone displays, and other microscale fluidic devices. The findings could enable new types of heat transfer systems that don't require a pump.
Researchers used astronomy technology to develop a system that provides more precise images of single molecules tagged with nanoprobes, allowing for detailed information about molecular binding and gene sequences. The technology enables high-speed detection and identification of individual molecules at nanometer resolution.
Researchers at CCNY and Rice University have developed a low-cost, 'green' technique for making antimicrobial paints. The method uses silver nanoparticles to create an antibacterial coating that can be applied to various surfaces, offering a fresh defense against germs in homes and workplaces.
Scientists have successfully used magnetic fields and nanoparticles to deliver healthy cells to targeted sites in blood vessels. The research, done in animals, may lead to a new method of delivering cells and genes to repair injured or diseased organs in people.
A team of researchers from Case Western Reserve University, VA and NASA Glenn Research Center has unveiled a method for developing mechanically-reinforced polymer nanocomposites. The approach uses a process to assemble nanoparticles into a three-dimensional network before filling it with a polymer, resulting in compatible materials. Th...
Researchers have developed a method to control the size of nanoparticles, allowing for mass production and diverse applications. This breakthrough has significant implications for fields like medicine, renewable energy, and cosmetics, where nanoparticles can be tailored to perform specific tasks.
Scientists are discovering that aquatic nanoparticles influence natural and engineered water chemistry differently than similar materials of a larger size. The review considers nanoparticles formed by natural processes in water and as unintended consequences of human activity, such as mining or water treatment.
Researchers develop nanoparticles that can be controlled by electromagnetic pulses to release therapeutic drugs directly into tumors, a potential breakthrough in cancer treatment. The system uses heat-sensitive DNA tethers to release drugs, allowing for customizable and targeted delivery.
The National Institutes of Health has awarded Clemson University researchers nearly $1 million to develop polymer dot nanoparticles for tracking single molecules in live cells. This technology could help determine the body's defenses against viruses and bacteria, as well as pinpoint cancer cells for more effective treatment.