Articles tagged with Nanoparticles
Researchers at the University of Missouri have developed a reliable method for detecting silver nanoparticles in fresh produce and other food products. The study found that smaller particles can penetrate skin and reach sensitive sites after digestion, posing a potential health risk to consumers.
Researchers at Umeå University created graphene nanoscrolls with high efficiency by decorating iron oxide nanoparticles. The material shows promising properties as electrodes in Li-ion batteries due to its magnetic interaction and nitrogen defects.
Researchers at UGA are developing a new treatment technique that uses nanoparticles to stimulate the immune system against breast cancer cells. By targeting mitochondria and activating dendritic cells, they can produce high levels of chemical signals that alert the immune system to attack cancer cells.
Researchers at Syracuse University have developed a novel method for synthesizing alloy nanomaterials with stainless steel-like interfaces. This breakthrough may enable the creation of diverse forms of alloy nanomaterials for various applications, including gas storage and heterogeneous catalysis.
Researchers at McGill University have discovered a method to join nanoparticles together using ultrasound, forming strong agglomerates without changing their useful properties. This discovery could lead to the development of new hybrid materials with various everyday applications, such as improving catalytic converters in car exhausts.
A team of MIT researchers investigated the factors controlling boiling heat transfer from a surface to a liquid, finding that surface porosity is the most important factor. They developed methodologies for systematically depositing nanoparticles onto surfaces with controlled wettability and porosity, leading to improvements in heat-tra...
Researchers at Sanford-Burnham Medical Research Institute have developed nanoparticles that can deliver small interfering RNA molecules to specific cells, effectively silencing malfunctioning genes. The approach points toward new ways to treat diseases such as cancer and heart disease by using RNA interference.
Scientists have developed a new method to discern molecular handedness using tiny nanocubes, which could improve drug development and optical sensors. The approach amplifies the difference in response to light between left- and right-handed molecules.
Researchers at Brown University have developed a bioadhesive coating that significantly increases the intestinal uptake of polymer nanoparticles in rats. The coating enhances the distribution of particles to specific tissues around the body, suggesting potential for targeted oral drug delivery.
Researchers reviewed existing studies on nanoparticle toxicity and found that ingestion is unlikely to cause health problems at typical exposure levels. However, the literature lacks evidence on long-term effects or subtle alterations in gut microbial populations.
A new study from MIT sheds light on the nanoparticles' fate, suggesting ways to maximize delivery of short interfering RNA (siRNA) for gene silencing. The researchers found that a protein called Niemann Pick type C1 (NPC1) is crucial for nanoparticle recycling, and disabling it can increase siRNA delivery efficiency.
Researchers use silver-based nanoprobes that reflect distinct optical fingerprints when light is shined on infected samples, detecting specific genetic materials taken from human samples. This technique has the potential to provide fast and reliable information about patients at the point of care.
A new discovery by Penn State researchers may lead to the creation of cheaper clean-energy technologies. The team, led by Raymond Schaak, has found that a nickel phosphide nanoparticle can effectively trigger hydrogen production from water. This process is crucial for many energy-production technologies, including fuel cells and solar ...
Scientists have created a general strategy for making a wide range of nanoparticles in different size ranges, compositions and architectures. The new technique uses star-shaped block co-polymer structures as 'nanoreactors' to control the size and uniformity of colloidal nanocrystals.
A study found that rod-shaped nanoparticles adhere effectively to endothelial cells, enhancing drug delivery. Researchers believe this technology holds promise for novel targeted therapies with fewer side effects.
Srikanth Singamaneni aims to create novel biosensors using self-assembled metal nanoparticles with artificial antibodies, improving specificity and sensitivity. He also plans to educate high-school science teachers and develop a nanotechnology kit for students.
Researchers have developed a new gene delivery method using magnetically targeted nanoparticles that can effectively deliver genes to injured arteries without causing side effects. The technique, which uses stents as a platform for magnetic guidance, shows promise in overcoming current limitations of gene therapy vectors.
Researchers harness advanced atomic force microscopy to track nanomedicine effects on patients, revealing potential benefits in drug delivery and safety. The technique helps identify nanoparticle accumulation and tissue stiffness, offering insights into nanotoxicology and its impact on patient health.
Scientists have designed nanoparticles that can flip from a sphere to a net-like structure in response to tumor signals, accumulating at the site of cancer. This new approach aims to target treatments specifically to diseased cells, overcoming current limitations.
Researchers create nanoparticles using natural lipids derived from grapefruit, which can transport therapeutic agents to specific cells without causing adverse effects. The technology has been validated in a Phase 1 clinical trial for colon cancer patients and may be applied to treat inflammation-related autoimmune diseases.
Researchers at NIST create three-dimensional scaffolds made with cells and hydrogels to evaluate the biological effects of nanoparticles. The hydrogel-based scaffolds provide a more realistic environment than current laboratory tests, allowing for longer-term studies and better representation of normal exposure levels.
Researchers at the University of Pittsburgh have demonstrated nanoscale alloys that emit bright near-infrared light, which could be used for cancer detection and treatment. The findings have the potential to lead to new applications in health and energy fields.
Researchers have developed a new technique to improve the use of nanoparticles as a drug delivery system. The study found that smaller particles degrade faster in the body than predicted by in vitro measurements. By understanding this degradation, a mathematical model can be developed to optimize nanoparticle-based therapeutic systems.
University of Illinois researchers created a novel approach to produce highly uniform Pt icosahedral nanocrystals using the hot injection-assisted GRAILS method. The synthesis results in high-purity products with ideal models for studying structure-property relationships.
A national study on nanomaterial toxicity has provided comparable health risk data, enabling regulators to develop policies to protect workers and consumers. The researchers found that carbon nanotubes caused inflammation in the lower regions of the lung, but made them less hazardous by modifying their structure.
A team of researchers has developed a novel material that enhances light absorption in polymer solar cells, increasing their efficiency. The material, Ag@SiO2 nanoparticles, is solution-processable and customizable on the molecular level, offering promising advantages over traditional silicon-based devices.
Berkeley Lab researchers have developed a new set of metrics for analyzing data acquired via small angle scattering (SAS) experiments with X-rays or neutrons. The new metrics reduce the time required to collect data by up to 20 times, enabling accurate high-throughput and objective analyses of flexible molecular machines that control c...
A novel gene therapy approach using nanoparticles to deliver GDNF may halt Parkinson's disease progression and reverse symptoms. This non-invasive method bypasses the blood-brain barrier, enabling continuous production of GDNF in brain cells.
Dr. Susan E. Clare's research aims to deliver chemotherapy directly to brain metastases using immune cells and nanoparticles, targeting HER2 positive and triple negative breast cancers. The system uses nanoshells coated with gold to release drugs at will in the appropriate spot in the brain.
Scientists have developed GUMBOS-based materials with targeted properties for medical use, such as selectively toxic to cancer cells and non-toxic to normal cells. The technology also has potential uses in solar cells and biomedical imaging.
Researchers have developed a new approach to testing the health and environmental effects of nanoparticles, taking into account their unique properties. The study's findings highlight the need for revised nanotoxicology tests that consider factors such as size and composition.
Controlling the shape of nanometer-sized catalytic particles is crucial for optimizing their activity and selectivity in applications such as catalytic converters, fuel cells, and chemical catalysis. Surface diffusion plays a key role in defining these shapes. The research found that varying temperature and deposition rate can control ...
Researchers have made significant progress in engineering blue-green algae to produce nanocellulose, a 'wonder material' with great strength and potential applications in biofuels, biomaterials, and more. The team successfully engineered the algae to produce fully functional nanocellulose.
Researchers have developed a new imaging methodology that produces 3-D images of nanoparticles at atomic resolution, revealing new details of defects. This method enables the visualization of atoms from different angles and their arrangement in three dimensions.
Researchers have developed nanoparticles that can be used to create scintillation devices capable of detecting a wide range of X-rays and gamma rays. The nanocomposite detectors showed promising results, but further refinement is needed to optimize their performance.
Researchers create a new imaging technique using nanoparticles to track stem cells in real-time, allowing for better initial placement and optimization of therapeutic approaches. The technique enables precise guidance and monitoring of stem cells, potentially improving regenerative medicine treatments.
Researchers developed biodegradable nanoparticles that deliver inflammation-resolving drugs to sites of tissue injury, promoting clearance of pathogens or damaged tissue and restoring normal state. The treatment has potential for treating conditions like atherosclerosis and neurodegenerative diseases.
Researchers developed biodegradable nanoparticles that selectively target and resolve inflammation, potentially treating atherosclerosis and neurodegenerative diseases. The nanoparticles release an inflammation-resolving peptide drug, promoting tissue repair and reducing chronic inflammation.
Dr Hendrik Ulbricht's team will explore the theoretical possibility of conducting experiments to discover whether there is a limit to quantum theory or not. They aim to generate a quantum superposition state for nanoparticles using matter wave interferometry.
Researchers at Washington University School of Medicine have developed nanoparticles carrying melittin, a toxin found in bee venom, that can destroy human immunodeficiency virus (HIV) while leaving surrounding cells unharmed. This finding offers an important step towards developing a vaginal gel that may prevent the spread of HIV.
Scientists utilize alyssum, pteridaceae, and sinapi mustard to absorb toxic metals from polluted soil through phytoremediation. The extracted poisons are then converted into valuable materials, such as catalytic converters and nanoparticles for cancer treatment.
Swedish scientists developed theranostic nanoparticles that can deliver chemotherapy to breast cancer cells while being detectable in MR scanners. The particles are biodegradable and show no toxicity, making them a potential tool against cancer.
Researchers develop lipid nanoparticles as vectors in gene therapy to deliver therapeutic genes to cells without degrading within the organism. The technology improves drug absorption for insoluble or poorly soluble molecules, offering a promising alternative for diseases with no effective treatment.
Researchers at Duke University found that silver nanoparticles can have adverse effects on plants and microorganisms in low doses, leading to reduced biomass and altered enzyme activity. The study's findings highlight the need for further research into the environmental impact of these particles.
Researchers at Helmholtz Centre Berlin have developed a method for producing titanium dioxide nanoparticles at room temperature in a polymer network. The analysis showed that the nanoparticles are homogeneously distributed over the polymeric nanoreactors and have a crystalline structure, enabling their use as catalysts.
Penn researchers create a protein 'passport' that allows nanoparticles to bypass the immune system, facilitating targeted drug delivery and implant device functionality. The innovative approach could improve treatment efficacy by reducing inflammation and prolonging nanoparticle retention.
Researchers have catalogued the structural diversity of metallic nanoclusters into families using a new numerical simulation method. This breakthrough enables tailoring of specific properties and has potential applications in nanocatalysis and magnetic storage.
Researchers at Northwestern University have created a new set of building blocks for materials science using nanoparticles and DNA, enabling programmable control over material properties. The new approach allows for the creation of novel crystal structures with tailored physical properties.
Scientists used X-ray beams to trace the uptake of zinc and cerium nanoparticles by soya bean plants. Zinc was found to dissolve and accumulate in the plants, while cerium did not biotransform and reached the plant pods.
A new study has found that widely used nanoparticles accumulate in soybean plants grown in farm soil, which could have health implications. Zinc oxide and cerium dioxide, commonly used in cosmetics, were detected in the reproductive/edible portions of the soybeans.
Researchers at University of Michigan discover that nanoparticles have an Achilles heel - they can't escape the bloodstream to reach diseased tissue. However, larger microspheres can be used as drug carriers, ferrying nanospheres to vessel walls or using different shapes to evade red blood cells.
A Case Western Reserve University researcher is creating ultra-high molecular weight polyethylene with embedded magnetic nanoparticles to monitor degradation and wear. The goal is to make implants more resistant to the environment inside the body.
Researchers at INRS Énergie Matériaux Télécommunications Centre developed a novel nanohybrid structure combining carbon nanotubes and lead sulfide nanoparticles using pulsed laser ablation technique. The new material exhibits strong photoresponse, fast photocurrent response time and spectrally wide photoactivity.
A team of researchers from Australia and France has developed a novel manufacturing technique to create uniform silica wires through self-assembly. The technique enables the combination of silica with any material, paving the way for new applications in sensing, photovoltaics, optical switches, and photon sources.
A UT Arlington bioengineering researcher, Kytai Nguyen, is working on a drug-delivery portion of a project to develop nanoparticles that will stimulate lung growth and remodeling. The project aims to help patients with destructive lung diseases by introducing drugs through inhaled nanoparticles.
Researchers at MIT have created a device that can deliver RNA, proteins and nanoparticles through cell membranes by deforming cells. The technique has shown success in delivering reprogramming proteins and generating induced pluripotent stem cells with improved efficiency compared to existing methods.
Researchers at Syracuse University studied nanoparticle toxicity, finding that shape and charge modifications can alter chemical interactions with cell membranes. The study highlights the need for safe handling procedures in nanomanufacturing and nano-biotechnology.
Scientists have created a self-sterilizing composite material derived from Douglas fir needles that can coat medical implants and surgical devices to prevent microbial growth. The material uses silver nanoparticles generated from the plant extract, which acts as a natural chemical reducing agent.
Researchers found that iron oxide nanoparticles can effectively label human endothelial cells for in vivo magnetic resonance tracking. However, high concentrations of INOPS can induce cell death and affect cell activity.
Researchers at MIT have developed a new technology that can detect cancer biomarkers in the urine, potentially enabling earlier diagnosis and improved patient outcomes. The system uses nanoparticles to amplify tumor signals, making it easier to identify specific proteins secreted by cancer cells.